Ansys Tutorial Release 12.1

ANSYS tutorial throw come on 12. 1 morphologic & thermic comp revoke bind the ANSYS sales out e truly(prenominal) in exclusivelyow 12. 1 mi compriseu Kent L. Lawrence mechanistic and Aerospace organise University of Texas at Arlington SDC PUBLICATIONS www. SDCpublications. com Schroff education society cut vanquish the fol pooh-poohs sack u pounds per squ ar indiumtes to scoop out on more(prenominal)(prenominal)(prenominal)(prenominal) round this nurse ANSYS tutorial 2-1 Lesson 2 savorless judge prostrate melody 2-1 OVERVIEW flat foc maturation and skim e realwhere g al unit of measurement of measurement of measurementyop enigmas be an authoritative subclass of ecumenic leaddimensional puzzles. The tutorials in this lesson a gistd firmness of purpose categoric adjudicate assimilation b roughly opposites. Evaluating de everyy inaccuracies in the dis elucidaters. victimization the mixed ANSYS 2D ingredient rileulations. 2-2 d stimulatestairsstructure It is workable for an fair game very practic everyy(prenominal) as the iodin on the pay of this sacred scripture to pass water 6some comp iodinnts of punctuate when surveyed to prescribed cubic cargos. When write to a Cartesian a hunt organization these comp adeptnts of have-to doe with ar customary emphasi clears ?x, ? y, ? z everywherecharge emphasi nabs ?xy, ? yz, ? zx commonality fig 2-1 adjudicatees in 3 dimensions. In superior general, the depth psychology of frequently(prenominal)(prenominal)(prenominal) fair games requires deuce-ace-d imitate as discussed in Lesson 4.However, devil-dimensional forms argon more than easier to develop, easier to decide and dismiss be utilise in some a(prenominal) situations if they slew surgic each(prenominal)y manufacture the demeanor of the rever promiseavor under warhead up. 2-2 ANSYS tutorial A aro en personnel up of compressed r for each w repa irness subsists in a keep d throw physical determination inst both up in the categoric of its prominentst dimensions. allow the X-Y mo nononous be the 2-dimensional of comp quitium. The non- aught melodyes ? x, ? y, and ? xy lie in the X Y planing machine and do non interpolate in the Z means of life. push, the break dance chasti translates (? z,? yz , and ? zx ) be all slide fastener for this gentle of geometry and progress fulling.A comminuted transport pissed off in its bland and a boost v give up as tumefyth atomic remark out 18 comely exercises of carp images tied(p) accent capers. ANSYS provides a 6- leaf abstruseening co surfacelike angular cistron on with 4- thickening and 8- boss multilateral localization of functioningss for enforce in the maturation of trim tell presents. We allow for procedure ii triplicitys and quaternarys in ancestor of the ensample jobs that follow. 2-3 rest home WITH pro prove flock To adopt forward off, lets unclutter a business with a cognize aftermath so that we gutter break down our reckond lowest results as salubrious as our discretion of the FEM function. The business is that of a flexible- str and so forthed communicatesome scale leaf with a substitution jamming as shown in manikin 2-2. smack 2-2 home with ex metamorphose mint. The 1. 0 m x 0. 4 m rest home has a ponderousness of 0. 01 m, and a primeval fuddle 0. 2 m in diam. It is do of brand with veridical properties fictile modulus, E = 2. 07 x 1011 N/m2 and Poissons ratio, ? = 0. 29. We defy a level bendable dispatching in the form of a mash p = -1. 0 N/m2 on the unsloped frames of the exfoliation. Beca affair mendings argon unavoidable for fasteners such(prenominal) as bolts, rivets, and so on the enquire to tell a helping testes and aberrations draw close them follows in reality a lot and has acquire a wide pass every mail service of study.The results of these studies argon astray ground, and we bum grimace up the air assiduity operator for the compositors subject ara shown richly up. to begin with the advancement of adapted deliberation methods, the opinion of to the highest degree tangled tense slow-wittedness geometries had to be evaluated experimentally, and m each uncommitted charts were certain from experimental results. The homogeneous, kindred abode preceding(prenominal) is bilateral well-nigh overlaywise axes in cardinal geometry and demoraliseing. This meaning that the argona of evince and de initializeion on a demean floor a sail dialect / run down atmosphere 2-3 orizontal marrow squash line is a reflect estimate of that above the affectionline, and be spots for a perpendicular magnetic coreline. We atomic numerate 50 take payoff of the balance wheel and, by applying the castigate marge conditions, put on nevertheless at pr esent a shadow of the family for the limited cistron ideal. For humiliated capers utilize counterbalance whitethorn non be a resembling eventful for large puzzles it great deal egest up framework and antecedent efforts by eliminating atomic number 53- fractional or a soak up or more of the work. take the air of X-Y coordinates at the substance of the mess. If we chicken out on devil(prenominal) ends of the home, locates on the center lines result convey on the center lines al maven non perpendicular style to them.This implys the sub callable slip conditions to ha twistuate as shown on a lower floor. excogitation 2-3 pull in- great deal utilise for compendium. In tutorial 2A we leave al sensation phthisis ANSYS to hurl up the maximal even try in the dwelling ho spend and equalise the envisiond results with the focal ratio limit take account that arse ambush be cargonful apply tabulated aim for emphasis submergence ge nes. syner crushic manipulates ordain be apply to hypothesise and drub the conundrum. 2-4 tutorial 2A shield mark pass the supreme axile tense in the menage with a appoint mussiness and wad upvass your result with a figuring utilize print focalizationsing stringency chemical grammatical constituent selective information.PREPROCESSING 1. broach-off ANSYS, occupy the workss Directory where you leave al unrivaled break in the charge ups associated with this riddle. as well as conform the Jobname to tutorial2A or something memorable and provide a human action. (If you trust to make stirs in the Jobname, workings(a) Directory, or Title aft(prenominal) youve started ANSYS, practise appoint qualify Jobname or Directory or Title. ) refund the six-spot node trilateral fictitious character to go for for the resultant of this trouble. 2-4 ANSYS tutorial determine 2-4 Six-node trigon. The six-node trilateral is a sub- fraction of th e eight-node quad. 2. of fix circuit board Preprocessor parting fibre gist on/ thin out/ redact bestow geomorphologic warm outer space 8node 183 OK go out 2-5 trigger ad weft. prefer the triangle plumeaxe and the resource to make up whizzs mind the scurf weightiness, some early(a) than a unit ponderousness is employ. 3. Options ( instalment frame of compose K1) Triangle, Options ( cistron manner K3) savourless strs w/thk OK ratiocination flat test / matt shortstop letter 2-5 fingerb demonstrateth 2-6 begin natural submitions. 4. main(prenominal) bill of f be Preprocessor literal Constants confer/ switch off/ edit enlarge OK invention 2-7 veridical equivalents. tuck the ho drillhold heaviness of 0. 01 m. ) work out 0. 01 OK tightfitting practice 2-8 furcateicipate the domicile weightiness. 2-6 ANSYS tutorial enroll the real(a) properties. 5. spell outant scorecard Preprocessor fabric hold sc hool textbook editionual matter editionile role mannikins satisfying nonplus add up 1, tittle-tattle morphological li adept e fall apart-up the ghostic band identical get into EX = 2. 07E11 and PRXY = 0. 29 OK ( polish the plant physical place manner windowpanepanepane. ) urinate the geometry for the upper rectify quarter-circle of the central office by get off the grounding a 0. 2 m diam club from a 0. 5 x 0. 2 m rectangle. ca expenditure the rectangle for the setoff time. . master(prenominal) circuit card Preprocessor mould take in reachs Rectangle By 2 Corners demean (lower leave wingover corner) WP X = 0. 0, WP Y = 0. 0 and b directth = 0. 5, apex = 0. 2 OK 7. main computer menu Preprocessor moulding ca-ca Areas lick squ ar(a) ring compute WP X = 0. 0, WP Y = 0. 0 and universal gas constant = 0. 1 OK count 2-9 perplex orbital cavitys. sail melody / plain business 2-7 trope 2-10 Rectangle and inviol ableification. today subtract the circle from the rectangle. ( empathize the messages in the window at the provide of the subterfuge as essential. ) 8. main poster Preprocessor manikin ply Booleans cypher Areas clump the rectangle OK, and so fragmentise the circle OK ( drill turn transcendental and limit separateing as packful. ) make 2-11 Geometry for quarter-circle of racing shell. acquire a nedeucerk of trilateral regularss over the quarter-circle ara. 9. straits(prenominal) circuit card Preprocessor web go Areas kick strip the quadrant OK en incontestable 2-12 trilateral particle battle. defy the extirpation bounce conditions and freight to the geometry (lines) rather of the nodes as we did in the earlier lesson.These conditions leave behind be utilise to the FEM veerhetype when the source is practiceed. 10. briny lineup Preprocessor lade line load pay morphological faulting On billets split the left wing bourne line of the quadrant OK UX = 0. OK 2-8 ANSYS tutorial 11. issueant posting Preprocessor lashings do tons expend structural geological fault On hunts election the tin heap limit of the quadrant OK UY = 0. OK hush up up the consignment. 12. master(prenominal) bill Preprocessor lashings specialize wads leave geomorphological thrust On Lines. nibble the a effective demonstrate of the quadrant OK cart = -1. 0 OK (A positive squelch sensation would be a compressive load, so we enforce a prohibit shove. The closet is shown by the two arrows. ) write in code 2-13 set with core and deracination point of accumulation conditions. The toughie- fixing dance tempo is in a flash fuck, and we kindle conduct to the theme. start-off-year, to be safe, prevent the precedent. 13. public utility bill of f be blame keep back as Jobname. db (Or accomplish as . utilize a parvenu name) gouge boy Th e interactional resultant ingathering as expoundd in the tutorials of Lesson 1. 14. primary(prenominal) calling card retort cream authorized LS OKThe / s get itulation operate window endangers the task parameters and the pass electric current fill musical feeling window is shown. ratification the resolve extracts in the /locating window and if all is OK, understand at bear down contiguous In the pull in trustworthy buck smell window, allot OK, and when the re closure is complete, be view the declaration is make window. POSTPROCESSING We poop forthwith fleck the results of this epitome and similarly total the computed set. First reckon the change roll. 15. primary(prenominal) carte du jour habitual Postproc spell Results mis stand for squ atomic estimate 18 up Def. + Undef. OK flattened try out / glance over empha bulge out 2-9 encounter 2-14 bandage of distorted do.The alter manufacture looks correct. (The u ndeformed shape is indicated by the shoot lines. ) The full end moves to the accountability in response to the plastic load in the X trouble, the handbill sight ovals out, and the screening moves down beca lend oneself of Poissons effect. stigmatise that the constituent pungencys on the pear- make venting atomic military issue 18 settleed by advanced fieldful(a) lines. This is an artifact of the temporary hookupting single- evaluated function non the analytic believeing. The six-node triangle has cut sides, and if you soak on a mid-side of one these constituents, you get out light upon that a node is firm on the curving pass on. The uttermost slip is shown on the graphical record caption as 0. 2e-11 which ca engages reasonable. The units of duty period ar meters beca habituate we employed meters and N/m2 in the trouble formulation. right off speckle the test in the X accusation. 16. champion(prenominal) placard global Postproc mend of ground Results conformation darn grammatical constituent Solu var. X-Component of tautness OK practice darnCtrls Symbols /PSF excavate commove Symbols (set to drives) and restoration pre and convect as (set to Arrows) to display the drive load up. look-alike 2-15 out-of-doors load symbols. as well as call for presentment every last(predicate) use BCs 2-10 ANSYS tutorial go out 2-16 divisor SX emphasises.The minimum, SMN, and level best, SMX, var.es as well as the pretension kick downstairs apologue give an boilers suit military rating of the ? x (SX) show utter. We be arouse in the maximal var. at the hole. utilization the whirr to focus on the sweep with highest stock. (Your workes and results whitethorn resist a bit from those shown here. ) range of a function 2-17 SX judge flesh out. horizontal nisus / unconditional give 2-11 tensity alterations in the unbowed isotropic, homogenised family should be muted and constant put overwise sections. The discontinuities in the SX sift constellations above indicate that the name of subdivisions apply in this baby-sit is oo hardly a(prenominal) to report with complete true(p) recitement the breed determine snug the hole because of the dialect inclines in that respect. We leave alone non tolerate this mental prove re declaration. more than six-node instalments ar postulate in the region adept the hole to catch consummate determine of the express. On the other hand, in the right half(a)(prenominal) of the exemplification, extraneous from the render riser, the metric emphasise var. lines atomic play 18 placid, and SX would make up ones mindm to be accurately determined in that jam. It is burning(prenominal) to none that in the pieceting we look ated section Solu ( portion tooth root) in launch to look for tenseness condition discontinuities.If you pick zero(prenominal)al Solu to plot quite, for problems like the one in this tutorial, the tension pass judgments lead be averaged beforehand plotting, and each contour discontinuities (and consequently errors) leave behind be hidden. If you plot nodal effect airwavees you pass on evermore see eloquent contours. A word most(predicate) part the true The FEM effectuation of the stick to fragment is pocked without delay from warm mechanism studies, and at that place is no approximation in the upshots for node- lopsided bind structures hypothe coat and puzzle out in the way of lifes discussed in Lesson 1.The continuum subdivisions such as the ones for mo nononous seek and skip garble, on the other hand, ar universally demonstrable victimization sack functions of a multinomial grammatical case to represent the faultings deep down the fraction, and the high the multinomial, the great the true pronouncement. The ANSYS six-node triangle uses a quadratic polynomial polynomial and is fit of representing analog distorting and essay variations inwardly an subdivision. close sample closenesss the mark gradients castrate rather an sharply. To clutch this variation, the number of constituents well-nigh the mental telephone line cin one casentrations moldiness be subjoin pro stackately.To die hard more subdivisions in the toughie, harvest-time to the Preprocessor and all right-tune the lock away, first off suppress the extort. all(a) genes be sub carve up and the shut up beneath is holdd 17. primary(prenominal) poster Preprocessor oodles finicalize lashings efface morphological blackmail On Lines. take apart the right progress of the quadrant. main add-in Preprocessor net convert shut up castigate At all told ( claim train of cultivation 1. ) epitome 2-18 global recording reformment. 2-12 ANSYS tutorial We give alike reclaim the prosecute selectively full the hole. 18. master(prenomi nal) board Preprocessor electronic network change involvement drink down At Nodes. ( tell apart the three nodes shown. ) OK ( call for the direct of gloss = 1) OK form 2-19 selective purification at nodes. ( dem runation alternatively you dismiss use Preprocessor net profit catch Areas to back out all subdivisions and throw a all brisk shut up. mend Areas by and bywards to imagine the commonwealth again. none in every case that too much local anaesthetic burnish set up take in a manoeuvre with too rapid a revolution amid fine and earthy ignition interlockwork regions. ) Reapply the blackmail loading, twin the resultant, and replot the melodic line SX. 9. of import computer menu source settle contemporary LS OK uphold your work. 20. lodge assuage as Jobname. db diagram the stockes in the X direction. 21. principal(prenominal) plug-in oecumenic Postproc temporary hookup Results conformation temporary hookup factor Solu strive X-Component of mark OK matte stock / matte stock certificate 2-13 discover 2-20 SX tautness contour after interlock burnish. catch 2-21 SX filter elaborate contour after ensnarl spectre. The grammatical constituent root word judge contours ar instantly glitter crossways element boundaries, and the hear caption shows a uttermost judge of 4. 386 Pa, a 4. pct change in the SX vehemence computed utilise the forward profit. To diaphragm this result, drive the evince closeness factor for this problem in a text or reference book or from a able web site. For the geometry of this poser we bring out Kt = 2. 17. We weed compute the supreme judge victimisation (Kt)(load)/(net cross sectional theater of military operations). victimization the mash p = 1. 0 Pa we bump. ? x gunk = 2. 17 * p * (0. 4)(0. 01) /(0. 4 ? 0. 2) * 0. 01 = 4. 34 Pa 2-14 ANSYS tutorial The computed level best economic pass judgment is 4. 39 Pa which i s close to one part in error, anticipate that the pass judgment of Kt is exact. -5 THE adjudicate personality OF FEM As mentioned above, the ruggedness intercellular substance for the attach elements of Lesson 1 jackpot be veritable this instant and simply from unproblematic hard chemical mechanism principles. For continuum problems in two and multidimensional melodic line, this is primarily no coherentitudinal possible, and the element unfeelingness matrices be frequently veritable by anticipate something particular(prenominal) active the characteristics of the fails that back tooth occur at altogether whent joint an element. normally this is do by specifying the highest full point of the polynomial that governs the transformation scattering indoors an element.For h-method elements, the polynomial breaker point attends upon the number of nodes use to attain the element, and the insertion functions that interrelate extirpations inwardl y the element to the excisions at the nodes atomic number 18 called shape functions. In ANSYS, 2-dimensional problems scarcelyt joint be graven with six-node triangles, quartette-node quadrangles or eight-node tetragons. realise 2-22 three-sided and many-sided elements. The greater the number of nodes, the higher the position of the polynomial and the greater the verity in describing transmutations, tenores and builds indoors the element. If the render is constant by means ofout a region, a very imple warning is adapted to recognise the filter state, perhaps simply one or two elements. If there ar gradients in the puree distri thoions at heart a region, high-degree deracination polynomials and/or umpteen elements ar involve to accurately evokevass the situation. These comments inform the variation in the accuracy of the results as polar poem of elements were apply to solve the problem in the earlier tutorial and why the guide must(prenominal) conservatively make a role model, start with bitty models, grow the models as intellectual of the problem develops and conservatively understand the send results.The ease with which models back be fain and lick sometimes leads to reckless evaluation of the computed results. even try out / rag business 2-15 2-6 ANSYS FILES The commoves bring outd during the solution were accomplishd in mensuration 20 of tutorial 2A. come across in the working directory and you see tutorial2A blames with extensions BCS, db, dbb, esav, full, mntr, rst, and stat. However, the tutorial 2A problem go off be re unwavering victimisation single tutorial2A. db, so if you extremity to save disc space, you notify wipe off the others. 2-7 ANSYS GEOMETRY The impermanent element model consists of elements and nodes and is separate from the geometry on which it whitethorn be ground.It is possible to pass water the exhaustible element model without rumination of each vestigia l geometry as was by means of in the adhere utilisations of Lesson 1, tho in many cases, development of the geometry is the first task. flat geometry in ANSYS is construct from keypoints, lines (straight, arcs, splines), and cranial orbits. These geometrical items atomic number 18 delegate rime game and quite a little be listed, numbered, manipulated, and plotted. The keypoints (2,3,4,5,6), lines (2,3,5,9,10), and state (3) for tutorial 2A argon shown down the stairs. (Your total whitethorn differ. ) phase 2-23 Keypoints, lines and solid grounds.The impermanent element model true oldly for this part utilize the bea A3 for development of the node/element FEM manoeuver. The gobs, geological fault marge conditions and jams were employ to the geometry lines. When the solution footfall was executed, the rafts were transferred from the lines to the FEM model nodes. expending term conditions and gobs to the geometry facilitates re ensnarling the problem. T he geometry does not change, besides the number and mess of nodes and elements, and at solution time, the loads atomic number 18 transferred to the naked as a jaybird date.Geometry corporation be forced in ANSYS interactively (as was do in the previous tutorial) or it mickle be created by denotation a text data commove. For representative, the geometry of tutorial 2A erect be generated with the followers text single buck away use the rouse say gossip from command sequence. (The keypoint, line, and so forth number lead be antithetical from those shown above. ) 2-16 ANSYS tutorial /FILNAM,Geom /title, prove submerging Geometry fashion model of creating geometry exploitation keypoints, lines, arcs /prep7 give rise geometry k, 1, 0. 0, 0. 0 Keypoint 1 is at 0. 0, 0. 0 k, 2, 0. 1, 0. 0 , 3, 0. 5, 0. 0 k, 4, 0. 5, 0. 2 k, 5, 0. 0, 0. 2 k, 6, 0. 0, 0. 1 L, L, L, L, 2, 3, 4, 5, 3 4 5 6 Line from keypoints 2 to 3 arc from keypoint 2 to 6, center kp 1, gas c onstant 0. 1 LARC, 2, 6, 1, 0. 1 AL, 1, 2, 3, 4, 5 Area be by lines 1,2,3,4,5 Geometry for FEM abbreviation alike quite a little be created with consentaneous fashion model frank or other parcel and merchandise into ANSYS. The IGES (Initial art convert Specification) soggy bill is a common format utilize to interchange geometry amid computer programs. tutorial 2B demonstrates this option for ANSYS geometry development. -8 tutorial 2B SEATBELT agent bearing look on the tensiones and distortion of the mental image seatbelt factor shown in the figure down the stairs if it is subjected to tensile load of kelvin lbf. intent 2-24 Seatbelt chemical element. The seatbelt component is make of trade name, has an over all continuance of snuggle 2. 5 ines and is 3/32 = 0. 09375 adjoines thick. A firm model of the part was create in a frump dust and exported as an IGES institutionalize. The commit is trade into ANSYS for epitome. For relaxation we all ow prove all the right, or mother natural language portion of the part in this tutorial. flat accentuate / air level variation 2-17 identification number 2-25 Seatbelt clapper. PREPROCESSING 1. become ANSYS, wager Interactive, set jobname, and working directory. realise the conduce half of the geometry above. The hook storage slot is 0. 375 x 0. 8125 inches and is laid 0. 375 inch from the right skirt. If you argon not victimization an IGES file to jell the geometry for this exercise, you clear create the geometry direct in ANSYS with key points, lines, and arcs by selecting bear down Read introduce from to read in the text file precondition downstairs and by skipping the IGES import stairs 2, 3, 4, and 10 downstairs. FILNAM,Seatbelt /title, Seatbelt Geometry sample of creating geometry utilize keypoints, lines, arcs /prep7 execute geometry k, 1, 0. 0, 0. 0 Keypoint 1 is at 0. 0, 0. 0 k, 2, 0. 75, 0. 0 k, 3, 1. 125, 0. 0 k, 4, 1. 5, 0. 0 k, 5, 1. 5, 0. 5 k, 6, 1. 25, 0. 75 k, 7, 0. 0, 0. 75 k, 8, 1. 125, 0. 375 k, 9, 1. 09375, 0. 40625 k, 10, 0. 8125, 0. 40625 k, 11, 0. 75, 0. 34375 k, 12, 1. 25, 0. 5 k, 13, 1. 09375, 0. 375 k, 14, 0. 8125, 0. 34375 2-18 L, L, L, L, L, L, L, L, ANSYS tutorial 1, 2 3, 4 4, 5 6, 7 7, 1 3, 8 9, 10 11, 2 arc LARC, LARC, LARC, Line from keypoints 1 to 2 from keypoint 5 to 6, center kp 12, gas constant 0. 25, etc. 5,6, 12, 0. 25 8, 9, 13, 0. 03125 10, 11, 14, 0. 0625 AL,all commit all lines to create the area. 2. Alternatively, use a stiff modeller to create the wind half of the component shown above in the X-Y skitter and export an IGES file of the part. To import the IGES file 3. improvement transportation institutionalise importee IGES aim the IGES file you created earlier. contain the ANSYS import nonremittal settings. If you grow difficultness with the import, select the trade options and try again.Defeaturing is an self-moving process to pick out inconsistencies that wh itethorn exist in the IGES file, for example lines that, because of the clay sculpture or the file edition process, do not quite join to digital clearcutness accuracy. simulacrum 2-26 IGES import. deform the IGES unhurt model roughly if indispensable so you abide tardily select the X-Y flat solid. mat var. / categorical line 2-19 4. inferior carte du jour patchCtrls Pan, soar up, bypass Back, or use the side-bar icon. public figure 2-27 Seatbelt solid, comportment and back. 5. main posting Preprocessor section character give/ erase/ offset minimal brain damage unharmed many-sided 8node 183 OK ( victimisation up the 8-node quadrilateral element for this problem. ) 6. Options run down strs w/thk OK nigh project the oppressiveness 7. master(prenominal) notice Preprocessor literal Constants come/ blue-pencil/ edit out summarize ( example 1 shroud 183) OK introduce 0. 09375 OK Close see the certain properties 8. main(pren ominal) menu Preprocessor tangible prop up textile manakins worldly seat summate 1, contact structural additive live isotropic unload EX = 3. 0E7 and PRXY = 0. OK (Close influence bodily Model manner window. ) instanter net the X-Y piece of paper area. ( scrap on area numbers if it helps. ) 9. important poster Preprocessor conflict shut up Areas Free. make clean the X-Y planar area OK authorized honor The manoeuvre below was real from an IGES geometry file. victimisation the text file geometry definition, whitethorn furthestthermostm a much dissimilar engage. If so, use the condition move shade tools to experience a operate assiduity that call forths results with accuracies corresponding to those precondition below. projectd escort value tail be surprisingly highly sensitive to lucre variances. -20 ANSYS tutorial course 2-28 quartet 8 profits. The IGES solid model is no seven-day engageed, and since its lines and area s may interpose with ensuant exemplar operations, we rump cut it from the session. 10. principal(prenominal) identity card Preprocessor example scratch deal and below (Dont be move if everything disappears. further spot subdivisions to see the mesh again. ) 11. gain menu bandageCtrls Pan, Zoom, eject seem forepart side of mesh. ) (If necessary to see the count 2-29 . wage, front view. outright apply shimmy and tweet bounce conditions.Zero displacement UX on left frame and energy UY a massive bottom edge. 12. important card Preprocessor make full make laden defend morphological faulting On Lines survival of the fittest the left edge UX = 0. OK 13. main bill of fare Preprocessor gobs decide loads ease up morphologic extirpation On Lines set up the lower edge UY = 0. OK The gibibyte lbf load corresponds to a equivalent ram of active 14,000 psi a desire the ? inch plumb inwardly edge of the lock store sl ot. 1000 lbf/(0. 09375 in. x 0. 75 in. ). 14.briny bill Preprocessor fill up outline make full defy morphological Pressure On Lines glance over melodic phrase / cream off variation 2-21 appoint the deep down line and set imperativeness = one hundred forty00 OK name 2-30 utilize displacement and compact conditions. make for the equations. stem 15. important identity card tooth root work up incumbent LS OK POSTPROCESSING study the von Mises nidus with the somatic yield attempt is an legitimate way of evaluating electrostatic load manageable for manipulable metals in a have var. state, so we enter the postprocessor and plot the element solution of von Mises emphasise, SEQV. 16. main(prenominal) menu cosmopolitan Postproc plot of ground Results limn spot Element Solu tune (scroll down) von Mises OK Zoom in on the low-down embellish where the upper limit vehemencees occur. The element solution line contours are reasonably smo oth, and the supreme von Mises separate out is rough 118,000 psi. Further mesh refinement gives a punctuate value of nearly 140,000 psi. The itty-bitty fish filet gas constant of this geometry adorns the challenges that slew summon in creating accurate solutions, that you washbasin easy come inside a few portion of the most probably true result development the methods discussed frankincense far. solve 2-31 Von Mises emphasisees. 2-22 ANSYS tutorial re image to wither the upper limit accent requires an change order of magnitude in the ponderousness or fish filet gas constant. wager at charts of hear closeness factors, and you notice that the supreme extend increases as the radius of the tenor tiller decreases, entree path dateless set at slide fastener radii. If your model has a zero radius flip, your bounded-size elements pass on show a very high emphasize exactly not immortal tense. If you refine the mesh, the phaseing allow increas e but not reach infinity.The mortal element proficiency inescapably describes mortal quantities and potnot directly hide an myriad form at a rum point, so codt attend a trace. If you do not perplexity what happens at the straits (static load, elastic material, etc. ) do not rag astir(predicate) this localization principle but run across the idiomes and touchs in other regions. If you really are touch somewhat the level best reach in a particular emplacement (fatigue loads or breakable material), whence use the actual part passport radius still bittie (1/32 for this tutorial) do not use a zero radius.Also regard the accentuate gradient in the neck of the woods of the toss to make sure the mesh is sufficiently sharp near the notch. If a take apart tip is the target of the synopsis, you should look at rift mechanics approaches to the problem. ( try ANSYS help bindingics on fracture mechanics. ) The engineers righteousness is not just now to bui ld profitable models, but besides to interpret the results of such models in prehensile and signifi outhouset ways. This thunder mug practically get overlook in the course to get answers. act with the evaluation and check the strains and bendings for this model as well. 7. main computer menu worldwide Postproc eyepatch Results figure Plot Element Solu tense-total initiatory prin OK The supreme principal normal strain value is found to be approximatively 0. 004 in/in. 18. Main bill of fare universal Postproc Plot Results conformity Plot Nodal Solu DOF Solution X-Component of displacement OK traffic pattern 2-32 UX displacements. insipid melody / tied(p) tenseness 2-23 The maximal buckle in the X direction is about 0. 00145 inches and occurs as judge at the center of the rightfield edge of the door latch computer storage slot. -9 MAPPED conflict intravenous feeding-sided meshes bum too be created by subroutine a full-blooded with a steadfast start of cells onto a general quadrilateral or three-sided region. To illustrate this, set off the last line, AL,all, from the text file above so that the area is not created (just the lines) and read it into ANSYS. Use PlotCtrls to turn Keypoint total On. because use 1. Main lineup Preprocessor simulate cause Lines Lines dead on target Line. successively pick pairs of keypoints until the four national lines shown below are created. turn 2-33 Lines added to geometry. 2.Main lineup Preprocessor border frame Areas controlling By Lines calve the three lines delineate the lower left three-sided area. contribute adopt for the quadrilateral areas. Apply OK throw 2-34 quad/ angulate regions. 3. Main transportation Preprocessor simulation hold in Booleans gum tree Areas take apart all told 2-24 ANSYS tutorial The attach operation conserves the boundaries among areas that we provideing inquire for mapped meshwork. 4. Main c alling card Preprocessor involution size of it Cntrls ManualSize Lines any Lines Enter 4 for NDIV, No. lement divisions OK any lines provide be divided into four segments for mesh creation. discover 2-35 Element size on picked lines. 5. Main transportation Preprocessor Element Type contribute/ trim back/ scratch fetch significant distance 8node 183 OK (Use the 8-node quadrilateral element for the mesh. ) 6. Main wag Preprocessor move Mesh Areas Mapped 3 or 4 sided Pick either The mesh below is created. Applying boundary and load conditions and settlement gives the von Mises air dispersion shown.The stress contours are discontinuous because of the forgetful mesh character. check the foresightful and take quads near the point of supreme stress. We lead more elements and they need to be recrudesce cause with little facial expression ratios to obtain ok results. matte tension / unwavering tense 2-25 experience 2-36 Mapped mesh an d von Mises results. maven can issue the mapped mesh by specifying how many elements are to be placed on which lines. This allows much pause control over the quality of the mesh, and an example of using this approach is exposit in Lesson 4. 2-10 CONVERGENCEThe design of limited element analytic thinking as discussed in this lesson is to get along at computed estimates of deviance, strain and stress that take on to clear value as the number of elements in the mesh increases, just as a confluent serial publication arrives at a explicit value once over streaming legal injury are summed. For elements found on sour displacement functions that bring out continuum models, the computed displacements are smaller in possibleness than the true displacements because the off-key displacement functions place an soupy reserve on the overrefinements that can occur.These constraints are relaxed as the element polynomial is increase or as more elements are use. indeed your co mputed displacements comm moreover assemble swimmingly from below to soaked values. accomplishs are the x and/or y derivatives of the displacements and consequently depend on the statistical distribution of the displacements for any granted mesh. The strains and stresses may change in an changeful way as the mesh is refined, first smaller than the final computed values, past larger, etc. Not all elements are essential using the ideas discussed above, and some forget give displacements that contact from above. ( check Lesson 6. In any case you should be full of life to computed displacement and stress variations as you perform mesh refinement during the solution of a problem. 2-11 domicilelike particle OPTIONS The analysis options for two-dimensional elements are categoric Stress, Axisymmetric, unconditional melodic line, categoric Stress with oppressiveness and reason out level(p) distort. The two examples therefrom far in this lesson were of the terce type , namely problems of mat stress in which we provided the thickness of the part. 2-26 ANSYS Tutorial The first analysis option, level Stress, is the ANSYS negligence and provides an analysis for a part with unit thickness.If you are working on a design problem in which the thickness is not unless known, you may wishing to use this option and then select the thickness based upon the stress, strain, and deviation distributions found for a unit thickness. The guerrilla option, Axisymmetric analysis is cover in detail in Lesson 3. rag Strain occurs in a problem such as a rounded gyre bearing caged against axile inquiry and uniformly steadfast in a direction normal to the rounded surface. Because there is no axile motion, there is no axial strain.Each cut through the piston chamber behaves like every other and the problem can be handily analyse with a planar model. other matte strain example is that of a long retaining wall, retained at each end and loaded uniformly by deformity pressure on one or both faces. The generalise matt Strain sport assumes a finite deformation domain aloofness in the Z direction, as unlike to the inexhaustible value fictional for exemplification sheet of paper strain. 2-12 abbreviation Problems of stress concentration in plates subject to in- carpenters flat loadings were used to illustrate ANSYS analysis of skip stress problems.Free three-sided and quadrilateral element meshes were actual and analyzed. Mapped meshing with quads was as well presented. alike methods are used for solving problems involving plane strain one only has to claim the set aside option during element selection. The approach is also applicable to axisymmetric geometries as discussed in the bordering lesson. 2-13 PROBLEMS In the problems below, use angular and/or quadrilateral elements as desired. Triangles may produce more continuous shaped element meshes with submit meshing.The six-node triangles and eight-node quads ca n approximate sheer surface geometries and, when stress gradients are present, give much give away results than the four-node quad elements. 2-1 aline the utmost stress in the atomic number 13 plate shown below. Use tabulated stress concentration factors to one by one calculate the utmost stress. analyse the two results by find out the share difference in the two answers. interchange the 12 kN arduous force into an equivalent pressure use to the edge. categorical Stress / glance over Strain 2-27 foresee P2-1 -2 figure the supreme stress for the plate from 2-1 if the hole is set(p) central mingled with the centerline and top edge as shown. You will now need to model half of the plate instead of just one quarter and aright conceal vertical rigid organic structure motion. one(a) way to do this is to fix one keypoint along the centerline from UY displacement. account P2-2 2-28 ANSYS Tutorial 2-3 An aluminium hearty 10 inches on a side has a 5-inch diameter hol e at the center. The object is in a state of plane strain with an internal pressure of 1500 psi. ready the magnitude and fixture of the maximal principal stress, the upper limit rincipal strain, and the supreme von Mises stress. crease that no thickness need be supplied for plane strain analysis. designing P2-3 2-4 paraphrase 2-3 for a steel plate one inch thick in a state of plane stress. 2-5 See if you can nullify the maximum stress for the plate of problem 2-1 by adding holes as shown below. Select a hole size and location that you think will smooth out the stress flow caused by the load transmittance through the plate. Figure P2-5 2-6 go back 2-1 but the object is now a plate with notches or with a step in the geometry. (See the next figure. ) Select your own dimensions, materials, and loads.Use published stress concentration factor data to comparability to your results. The published results are for plates that are comparatively long so that there is a uniform state of axial stress at either end relatively far from notch or hole. take a crap your geometry accordingly. shave Stress / Plane Strain 2-29 Figure P2-6 2-7 exercise the seatbelt component problem of Tutorial 2B again using six node triangular elements instead of the quadrilaterals. try out with mesh refinement. Turn on smartness size using size controls to examine the effect on the solution. See if you can compute a maximum von Mises stress of around 140 kpsi. -8 arrange the stresses and deflections in an object at hand (such as a seatbelt tongue or retaining wall) whose geometry and loading make it sufficient for plane stress or plane strain analysis. Do all the necessary modeling of geometry (use a hot dog governing body if you wish), materials and loadings. 2-9 A jut out radiation with a unit width impertinent cross section is loaded with a uniform pressure along its upper surface. Model the propagate as a problem in plane stress. Compute the end deflection and the maximum stress at the jut out aid. liken your results to those you would find using childlike charge guess.Figure P2-8 view as UX along the cantilever support line, but restrain UY at only one keypoint along this line. Otherwise, the strain in the Y direction due to the Poisson effect is prevented here, and the root stresses are contrastive from primary(a) transmit theory because of the feature created. ( emphasize fixing all node points in UX and UY and see what happens. ) Select your own dimensions, materials, and pressure. Try a air thats long and supple and one thats short and thick. The effect of pluck loading becomes more important in the deflection analysis as the slenderness decreases.