APDL在ANSYS WORKBENCH MECHANICAL中的应用概述―“Geometry”中插入命令-学路网-学习路上 有我相伴
APDL在ANSYS WORKBENCH MECHANICAL中的应用概述―“Geometry”中插入命令
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- “Geometry”中任意body下插入命令流? 修改单元类型? 修改材料属性? 修改实参? 单元坐标系- 当插入命令时，会提示body的材料编号为”matid”，即该body的材料，单元等 ID编号都用”matid”代替。修改单元类型时：? ET,MATID,…? KEYOPT,MATID,…!ET是ANSYS定义单元类型的命令，编号用MATID代替该body的编号，…代表不同的单元类型。!KEYOPT是ANSYS定义上述单元关键选项的命令，编号用MATID代替，例如定义的平面单元，可用KEYOPT来定义单元的行为是平面应力还是平面应变等等。设置材料属性：? MP,Label,MATID,…? MPTEMP, SLOC, T1, T2, T3, T4, T5, T6MPDATA, Label, MAT, SLOC, C1, C2, C3, C4, C5, C6? TB,BISO,MATID,!MP是ANSYS定义材料属性的命令，编号用MATID代替该Body的材料编号，Label代表不同的物理属性，例如弹性模量、泊松比等等，具体参考ANSYS help。!MPTEMP与MPDATA一起是ANSYS定义温度相关的材料属性的命令，编号用MATID代替该body的材料编号，Label代表不同的物理属性，T1-T6代表不同的温度点，C1-C6代表对应温度点的材料属性，具体参考ANSYS help。!TB和TBDATA也是定义材料属性常用的命令，尤其适用于定义非线性材料和添加材料数据曲线点。具体参考帮助文件。- 实例1：? ET,MATID,SOLID226,11!定义耦合分析单元SOLID226，关键选项KEYOPT(1)设为11代表热-结构耦合单。具体可参考SOLID226的单元介绍。? ET,MATID,LINK180,,,1,
!只承受拉伸载荷SECTYPE,MATID,LINKSECDATA,AREA
! AREA输入link截面面积!定义LINK单元，其中SECTYPE和SECDATA针对link截面进行设置，同样适用于壳单元厚度和梁单元截面设置。- 实例2!定义线性材料属性:? MP,EX,MATID,2E11? MP,DENS,MATID,7850- 实例3：!定义非线性材料属性:? MP,EX,MATID,200e3? MP,NUXY,MATID,0.3? TB,BISO,MATID,1? TBDATA,1,300,2e3? TB,CREEP,MATID,1,3,10? TBDATA,1,3.125E-14,5,0- 可在Solution Information当中查看修改的单元性质。注：每种单元的关键选项和属性各不相同，修改单元时应通过帮助文件充分了解该单元的详细介绍，此外，ANSYS Mechanical在插入命令流时，因为软件本身有默认或者已选择的单位，所以在定义属性的数值时，一定要保证单位的统一性！
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Ansys workbench mechanical官方教程及用法大全
ANSYS R12 New N F Features tM h i l Mechanical Capabilities? 2009 ANSYS, Inc. All rights reserved.1ANSYS, Inc. ProprietaryR12 Highlights in Mechanical Capabilities ? New Element Technology ? Advances in Contact Modeling ? Additional Material Models ? Solver Performance Enhancements ? Rigid and flexible dynamics ? Explicit dynamics? 2009 ANSYS, Inc. All rights reserved.2ANSYS, Inc. ProprietaryELEMENT TECHNOLOGY? 2009 ANSYS, Inc. All rights reserved.3ANSYS, Inc. ProprietaryCurrent-technology elementsCategory Solid Elements PLANE182, PLANE183, SOLID185, SOLID186, SOLID187, SOLID285 SOLID223, SOLID226, SOLID227 SHELL181, SHELL208, SHELL209, SHELL281 SOLSH190 BEAM188, BEAM189 LINK180 PIPE288, PIPE289 ELBOW290 USER300 REINF264,REINF265 Category Interface / gasket C h i Cohesive Target Contact Constraint/ Joints General Axisymmetric p purpose p p Special Elements INTER191 C INTER195 INTER202 - INTER205 INTER20 TARGE169, TARGE170 CONTA171 - CONTA177, PRETS179 MPC184 SOLID272, SOLID273 SURF151 C SURF156, , FOLLOW201, Discrete ElementsCoupled Physics Shell Solid-Shell Beam Link Pipe Elbow User Element Reinforcement? 2009 ANSYS, Inc. All rights reserved.4ANSYS, Inc. ProprietaryNew Element TechnologyNew 4-noded Tetra element : SOLID285fInternal DOFs4(u x , u y , u z , p)DOF: Displacements & Hydrostatic Pressure Stabilized formulation to satisfy LBB check1(u x , u y , u z ) e(u x , u y , u z , p)(u x , u y , u z , p)Stru uctura al Mec chani ics3f(u x , u y , u z , p)Benefits f Can C b be used dt to mesh h complex l geometries ti f Element is less sensitive to distortion f Vital to rezoning and nonlinear adaptivity analysis Applications ppf f2Automotive Suspension MountGood for incompressible materials Ideal for Forming and Hyperelasticity5ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.New Element TechnologyGeneral Axi-symmetric Element: 272/273fB3D elements generated based on 2D mesh Boundary conditions applied in 3D space Nonlinearities, Node to surface contactAI JLY’Z’ K X’Stru uctura al Mec chani icsf fBenefitsf f fMultiple Axis can be defined in any direction Take advantage of axi-symmetry but deformation is general in 3D 1 element in Θ (hoop) directionApplication f Detailed simulation of threaded connections f Bio-Medical: Tooth implanting3D view of shaft6ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Example: Cam-Shaft3D elements Cams meshed with SOLID272Shaft Valve Ball ValveFULL 3D : 13.7 hrs? 2009 ANSYS, Inc. All rights reserved.SOLID272:7hrsANSYS, Inc. ProprietaryNew Element Technology3D Finite-strain Element: PIPE288/289 f Linear or quadratic pipes in 3D f Thin pipe (plane stress) and Thick pipe (3D stress) option f Internal fluid and external insulation Benefits f Increased accuracy f Robust nonlinear infrastructure including stabilization f Hydrostatic, current, and wave loading Application A li ti f Slender or stout pipe like structures f Undersea piping and cabling cabling, f Chemical, Nuclear Power Industry,8ANSYS, Inc. ProprietaryPipe p 288Stru uctura al Mec chani icsPipe 289Piping Assembly? 2009 ANSYS, Inc. All rights reserved.New Element TechnologyNew Curved Pipe Element: ELBOW290 f Internal nodes for C/S deformation f C/S Deformation with Fourier series f Radial expansion, expansion ovalization & warping f Follower effects of distributed pressures Benefits f Accurate and easy to use f Supports pp layered y cross-section f Broad nonlinear material library f 3D Visualization Applications f Accurate modeling of curved pipe structures f Composite pipes, cables, nuclear piping9Stru uctura al Mec chani icsWarping & Ovalization? 2009 ANSYS, Inc. All rights reserved.ANSYS, Inc. ProprietaryNew Element Technology3D discrete Reinforcement: REINF264 f Reinforcing fibers modeled with embedded reinforcing elements f Fibers can be oriented arbitrarily f Reinforcement can account for a variety of nonlinear behavior Benefits f Explicit & accurate modeling of reinforcements f Predict stresses in reinforcements separately f Allows for “tension-only” treatment Application f Tire Ti i industry, d t Bi Biomedical di l d devices i f Aerospace, Civil engineering10ANSYS, Inc. ProprietaryStru uctura al Mec chani icsDiscrete Reinforcements? 2009 ANSYS, Inc. All rights reserved.CONTACT MODELING? 2009 ANSYS, Inc. All rights reserved.11ANSYS, Inc. ProprietaryContact element libraryTechnologySliding General friction (TB,USE) Pure Lagrange Augmented Lagrange Lagrange (Normal)/ Penalty (Tangent) MPC Contact Stiffness Lower-Order Higher-Order Higher Order Rigid-Flexible Flexible-Flexible Thermal Contact Electric/Magnetic Contact? 2009 ANSYS, Inc. All rights reserved.Node-toN d Node 178SMALL Y Y Y YNode-toS f Surface 175LARGE Y Y Y Y YSurfaceto-Surface 171-174LARGE Y Y Y Y Y AUTO Y Y Y Y Y YLine-toLi Line 176LARGE Y Y Y Y Y AUTO Y Y Y Y Y YLine-toS f Surface 177LARGE Y Y Y Y Y AUTO Y Y Y Y Y YANSYS, Inc. ProprietarySEMI-AUTO YAUTO Y Y (2D)Y YY Y Y Y12Advances in Contact ModelingFluid Pressure Penetration Support f Model fluid penetrating 2 contact surfaces f 2D/3D surface-to-surface contact pair f Small and large sliding contact f Rigid-flexible and flexible-flexible contact Usage f Pressure applied normal to contact & target elements f Can be cut off when contact is restored or contact pressure is larger than the fluid pressure Applications f Post-Leakage simulation f Sealing performance evaluation13Fluid pressure is appliedStru uctura al Mec chani icsFluid pressure is Not appliedSealsANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Advances in Contact ModelingContact Performance Enhancements f New Contact search algorithm f Smart over-constraint elimination & display f New Contact pair trimming logic f Solver files size reduced by 50% Benefits f Speed improved by 1x-200x f Computation time reduced f Less Disk I/O observed Applications f Most problems involving contacts should observe speed improvements f Problems involving bonded MPC contacts14ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsContact Speed-up ExampleBOOTSEAL 3D Elem: 11090 Nodes: 5040 Dofs: 30240 Rigid-Deformable +Self Contact 11.0 12.0 speedupBoot SealContact database Contact Search Contact Elements Other Elements Eq. Solver Total CPU Elapsed Time No. of Iterations No. of Substeps? 2009 ANSYS, Inc. All rights reserved.11.72 .64 .77 7 246 420.216 75.64 188.95 .35 8 240 431554.26 45.80 2.67 2.13 1.30 3.29 3.30 1.02 0.97ANSYS, Inc. ProprietaryContact Performance: Nonlinear Customer ModelElems:49701 Nodes:67582 Dofs: 405492CPU V110 V120Contact C t t Searching372s60 6 60.6sContact Elements1488s791sWall time167455s12141s? 2009 ANSYS, Inc. All rights reserved.16ANSYS, Inc. ProprietaryPerformance & Efficiency? New contact pair trimming logic C The CNCHECK command has new options for removing i (TRIM) or unselecting l ti (UNSE) contact t t and d target elements which are initially in far field. The new capabilities improve solution efficiency for small sliding contact or assembly contact, especially in Distributed ANSYS runs.Before trimmingAfter trimming? 2009 ANSYS, Inc. All rights reserved.17ANSYS, Inc. ProprietaryPerformance & Efficiency? New contact pair trimming logicBefore trimmingAfter trimming A benchmark test from John Deere No TRIM 2CPU 4CPU 8CPU18A benchmark test from a German user 8CPU No With TRIM TRIM Elements Wall time? 2009 ANSYS, Inc. All rights reserved.With TRIM587
ANSYS, Inc. ProprietaryAdvances in Contact ModelingFriction Definition Improvements f Tabular data for μ with up to 2 fields, eg. temperature, pressure, sliding velocity etc. f USERFRIC : A general API for user user-defined defined friction definitions Benefits f Account for complex friction behavior f Support friction definitions that do not follow Coulombs law of friction Applications f Wear or bearing analysis f Pipeline on a sea bed f Brake B k Squeal S l analysis l i19ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsExample: Pipeline on a Seabed? Straight Pipe on a seabed ? Qualitative comparison to a NAFEMS publication ? Similar Trends observed? 2009 ANSYS, Inc. All rights reserved.20ANSYS, Inc. ProprietaryAdvances in Contact ModelingEnergy & Momentum Conserving Contact f It imposes additional constraints on relative velocities in interface. f It satisfies momentum and energy balance for the contact/target interface. Benefits f Predict duration of contact & the rebound velocities after separation more accurately f Very little energy gain or loss Applications f High speed impact f Rigid-to-rigid contact in MBD f Dropping D i t tests t21ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsAdvances in Contact ModelingMany Misc. Contact ImprovementsfStru uctura al Mec chani icsModeling Rigid Bodies with Rigid Target Surfaces Boundary Conditions on any rigid target nodes Force distributed distrib ted s surface rface constraint” (RBE3) under large rotationfffNew shell shell-shell shell & shell-solid shell solid constraint type Benefits/Applications Significant robustness improvement Better performance for MBD analysis & CMS22ANSYS, Inc. Proprietaryf f? 2009 ANSYS, Inc. All rights reserved.SOLVER TECHNOLOGY? 2009 ANSYS, Inc. All rights reserved.23ANSYS, Inc. ProprietaryAdvances in Solver Technology2D Rezoning Enhancements f Allow to read in generic mesh from a third party mesher in rezoning f Allow user to split selected elements to refine mesh in rezoning f Automatically create transition region meshes h Benefits f Provides flexibility in remeshing f Solve problems otherwise can not be solved Application f Any large deformation analyses f Forming F i and d rubber bb sealing li simulation i l ti24ANSYS, Inc. ProprietarySealing Applications? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsAdvances in Solver TechnologyNew SNODE Solver for Modal Analysis f Splits FE matrix in to smaller pieces C SuperNodes f Solves reduced Eigen-value Eigen value problem f Transforms eigenvectors back to the original FE domain Benefits f Ideal for & 3 mil. DOFs , &500 modes f Non-iterative C i.e. will not fail to converge f Does not miss modes Applications A li ti f Beam-Shell or thin geometries f Automotive, Aerospace f High frequency response analysis, etc.2580000Stru uctura al Mec chani icsBlock Lanczos Supernode60000CPU Time e40000200000 100 00Number of ModesSingle Xeon 3.4 GHz processor ?17+ hours reduced to ~1 hour ?7 TB of I/O reduced to &300 GBANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Advances in Solver TechnologyMany Misc. Solver ImprovementsfStru uctura al Mec chani icsVT applied to Complex Eigen solver: Frequency Derivative Algorithm used DSPARSE solver supports unsymmetric matricesfBenefits/ApplicationsSolu ution time ef fSignificant improvement in solve speed Better performance for large number of contact pairs & constraints 00 00 Lanczos FDElapsedCPU? 2009 ANSYS, Inc. All rights reserved.26ANSYS, Inc. ProprietaryAdvances in Solver TechnologyDANSYS Improvements f Support HF-EMag calculations f PSTRESS, PSOLVE support f Cyclic Symmetry supportRepresentative Geometryuctura al Mec chani ics StruBenefits f More problems can take advantage of Parallel solvers 20 % f Scalability of solves improved by 10 10-20 Applications pp f Problems involving stress stiffening f Rotardynamics problems f EMAG problems27Machine Problem SizeWin x64 CCS 480K DOFCPUs Time (hr)1 2 4 836 36.7 7 22.3 14.5 8.4ANSYS, Inc. ProprietaryBolted Joints, N/L Contact, Contact Thermal loads Unsymmetric option? 2009 ANSYS, Inc. All rights reserved.DANSYS: Benchmarks on Win CCSDANSYS Revised Benchmark Set SpeedupsIntel Cluster Ready, 4 nodes 3 Ghz dual cores, 16 Gb, TCP interconnect6 5 4Universal Joint 400k DOF Small DSP sparse Gas-Struct 1M DOF Thermal JCG Carrier Model 2 M DOF PCG msave,on Block Assembly y 5M DOF Large g PCG msave,on Wing Model 1M DOF Lanpcg 10 Modes Wing Model 5M DOF PCG msave,offSpe eedup3 2 1 0 1 2 4 8 12 16Number of Processors? 2009 ANSYS, Inc. All rights reserved.28ANSYS, Inc. ProprietaryLINEAR DYNAMICS? 2009 ANSYS, Inc. All rights reserved.29ANSYS, Inc. ProprietaryAdvances in Linear DynamicsRotordynamics Improvements f Gyroscopic effect for shells and 2D planar elements f Rotating damping to model hysteretic damping in material Benefits f Versatility in modeling rotating shell and 3D axi-symmetric structures. f Rotating damping model enables rotor instability predictions. Applications f Aero gas turbine engines. f Electrical motors, pumps, etc f Computer disk drives30ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsAdvances in Linear DynamicsPSD (random vibration) Enhancements f Increased # of input PSD points - no longer limited to 50. f Improved performance of mode combination in spectrum analysis. f Number of modes that can be combined increased from 1,000 to 10,000 Benefits f Usability of random vibration features. f Performance improved Applications f Structures subject to random vibration such as aircrafts aircrafts, automobiles automobiles, et al. al31ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani icsBoundary Conditions and LoadingImprovements to PSD AnalysisfBase excitation: Individual or ALL Goodness of fit for PSD data Response PSD Results availableR Response PSD result lStru uctura al Mec chani icsf fApplications f Predict Dynamic y response p of a structure f seismic loading f Loading due to Ground transport f Machine operation? 2009 ANSYS, Inc. All rights reserved.32ANSYS, Inc. ProprietaryAdvances in Linear DynamicsSpectrum Analysis Improvements f Missing Mass and Rigid response method supported f Residual vector method extended to Spectrum analysis Benefits f Accurate representation of higher frequency content on structural response. f Missing Mass method meets NRC requirements Applications f Random vibration response prediction on airborne structures, nuclear reactors, et al al.Courtesy: NASA? 2009 ANSYS, Inc. All rights reserved.Stru uctura al Mec chani ics33ANSYS, Inc. ProprietaryAdvances in Linear DynamicsHarmonic Analysis Enhanced f Cyclic Symmetry now supports Harmonic Analysis. f Variational Technology (VT cyclic) based modal cyclic solve approach Benefits f Vibration response of cyclic structures subject to harmonic excitation. excitation f VT cyclic gets 3 C 4 X speed up of modal cyclic solution. Applications f Aero gas turbine engine design, electric motor / generator design34Stru uctura al Mec chani icsModal Cyclic SymmetryElapsed (sec) Standard Win32 Linux 64
VT 533 406 ~ 5.5 ~ 3.2Ratio? 2009 ANSYS, Inc. All rights reserved.ANSYS, Inc. ProprietaryAdvances in Linear DynamicsModal Superposition Enhancements f Harmonic & Transient performance improved, Results expansion pass f Tabular load as a function of frequency f Multiple load vectors supported for Mode Sup. Harmonic & Transient Benefits f Ability to solve very large models. f Ease of applying frequency dependent loading. f Improved usability of MSUP methods in ANSYS and ANSYS WB environment. Applications f Very V large l structures, t t for f example, l in i nuclear industry, space applications etc.35Stru uctura al Mec chani icsCircuit BoardNo. of equations No. of Modes A l i Analysis No. of Threads11.0SP1 CP (hr) Elapsed (hr) ~ 14.4 ~ 12.35 PSD 212.0 ~ 4.4 ~3ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.Advances in Linear DynamicsPSOLVE Method for Brake Squeal f Linear QR damped modal analysis with PSOLVE f Improved performance of QR damp eigensolver f Contact element enhancements for sliding f i ti modeling friction d li Benefits f Significantly faster problem setup due to flexibility of contact modeling f Taking advantage of advanced contact biliti t d lb k squeal l capabilities to model brake Applications f Instability prediction in automotive and aircraft landing gear brakes36Brake Assemblyuctura al Mec chani ics StruFull New Linear Nonlinear Method CP (min) ~ 66.6 ~ 13.3ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.MATERIALS TECHNOLOGY? 2009 ANSYS, Inc. All rights reserved.37ANSYS, Inc. ProprietaryNew Material Models AddedRate Dependent Chaboche Plasticity ModelfStru uctura al Mec chani icsBased on Chaboche Nonlinear Kinematic Hardening model Plastic Strain Rate-dependent effects Captures cyclic hardening & softeningf fApplications/Benefitsf f fApplicable for turbine and engine design Simulation of Ratcheting and Shakedown Strain rate dependent applications: for ex ex. Impact simulationsStre ess 3.E+08 2.E+08 1.E+08 0.E+00 -1.E+08 -2.E+08 -3.E+08 -0.015 0 015 -0.010 0 010 -0.005 0 005 0.000 0 000 0.005 0 005 0.010 0 010 0.015 0 015 Displacement? 2009 ANSYS, Inc. All rights reserved.38ANSYS, Inc. ProprietaryNew Material Models AddedImproved Extended Drucker-Prager modelfStructure OceanStru uctura al Mec chani icsInclude creep effect for all options except CAP option Capture strain rate effect of a geological materialfApplications/BenefitsfAnalyze geological materials that exhibit pressure dependency such as sand soil sand, soil, ceramics etc etc.? 2009 ANSYS, Inc. All rights reserved.39ANSYS, Inc. ProprietaryNew Material Models AddedNew Bergstr?m-Boyce ModelfCombines Hyperelastic & Viscoplastic effects The model decomposes the mechanics response of material into two distinct networks: A: time-independent B: time-dependent. pStru uctura al Mec chani icsfBio -TissuesApplications/BenefitsfAccurately capture material behavior under various loading conditions Model hysteretic behavior of Elastomers under large strain deformation Simulation of Polymers, Elastomers, Plastics, Bio-tissues which are strain-rate dependent40ffKeyboardANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.New Material Models AddedNew Elastomer Damage ModelfBased on Ogden-Roxburgh model A continuum damage model for rubber like material Isotropic damage assumptionReaction Forces soften with the 2nd load cycleStru uctura al Mec chani icsffBenefits/Applicationsf f fC t Captures cyclic li softening ft i of f elastomers l t Simulation of Mullins effects Applicable to rubber like materials such as polymers, elastomers, plastics and etc.? 2009 ANSYS, Inc. All rights reserved.41ANSYS, Inc. ProprietaryNew Material Models AddedAnands Viscoplasticity ModelfStru uctura al Mec chani icsImplemented for current generation elements Unified viscoplastic constitutive model Includes an internal state variable - the deformation resistance No yield surface Highly nonlinear large deformation problems High Hi ht temperature t metal t lf forming i simulations Electronic Packaging, g g, Solder j joint simulation42ANSYS, Inc. Proprietaryf f fBenefits & Applicationsf f fMetal Forming Applications? 2009 ANSYS, Inc. All rights reserved.Fracture Mechanics ImprovedEnhancements to J-integral CalculationsfStru uctura al Mec chanicsThermal strain is automatically included in the J-Integral calculation Surface pressure load on element surfaces or edges is automatically included in the J-Integral g calculationfBenefits/ApplicationsfProvide accurate estimation of J-Integral when there are thermal strain and surface pressure on crack k faces f Structural integrity assessments Nuclear reactor safety analysis43Spot Weld Failure Analysisf f? 2009 ANSYS, Inc. All rights reserved.ANSYS, Inc. ProprietaryExample: Turbine Blade CrackAnalysisPenny CrackPRCINT prints calculated J-Integral values to Solution Information Window? 2009 ANSYS, Inc. All rights reserved.44ANSYS, Inc. ProprietaryFracture Mechanics ImprovedMixed Mode Stress Intensity Factors f Based of Interaction integral approach by Gosz and Moran f Minimum input f Crack front/tip nodes f Crack plane normal or extension direction f Number of contours Benefits f Much easier to use f Improved p accuracy y observed Applications f Mixed mode stress intensity factor calculation , Safety analyses45ANSYS, Inc. ProprietaryStru uctura al Mec chani icsStress Intensity Factor calculation? 2009 ANSYS, Inc. All rights reserved.Advanced Analysis FunctionsImprovements in Initial StatefSupport Initial strains Support Plastic stress and strainStru uctura al Mec chani icsfBenefits/Applicationsf f f f fA l i of Analysis f residual id l stress/strain t / t i Analysis of Weldment with residual stress Transfer state of a 2D analysis to 3D Start in 2D and continue analysis in 3D Pre-stressed modal, Transient type analysis? 2009 ANSYS, Inc. All rights reserved.46ANSYS, Inc. ProprietaryRIGID AND FLEXIBLE BODY DYNAMICS? 2009 ANSYS, Inc. All rights reserved.47ANSYS, Inc. ProprietaryRigid DynamicsBushing Joint ? Free motion in some directions, constrained in others ? Elastic and damping forces in constrained directions Benefits ? Add flexibility at joints w/o large CPU cost ? Add realism to rigid simulations Applications ? Suspensions S i ? Pivots with compliance ? Vibration isolation48ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.R Rigid DynamicsRigid/Flexible DynamicsStops and Locks ? All Translational DOF’s ? Single rotational axis jointsR Rigid DynamicsBenefits ? Simplifies mechanism modeling ? Much requested feature ? Faster F t than th modeling d li contact t t Applications ? Travel limiters ? Non-moving impact points? 2009 ANSYS, Inc. All rights reserved.49ANSYS, Inc. ProprietaryRigid DynamicsRemote Loads ? Remote displacements ? Remote forces now supportedR Rigid DynamicsBenefits ? Much requested feature ? Allows load input w/o requiring geometry Applications ? Partial assembly modeling ? Inverse Dynamics? 2009 ANSYS, Inc. All rights reserved.50ANSYS, Inc. ProprietaryRigid DynamicsSpring Preload ? Specify free spring length ? Specify preloadR Rigid DynamicsBenefits ? More realistic modeling of spring mechanisms Applications ? Valve trains, ? Plungers, ? Solenoids? 2009 ANSYS, Inc. All rights reserved.51ANSYS, Inc. ProprietaryRigid DynamicsRedundancy Analysis and Repair ? Troubleshooting tool ? Common problem with mechanism models Benefits ? Points out over constrained joints ? Allows selective unconstraining ? Help H l prevent t problems bl going i f from Rigid to Flex pp Applications ? All but the very simplest mechanisms ? All models d l that th t will ill b be solved l di in fl flex dynamics52ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.R Rigid DynamicsFlexible DynamicsComponent Modal Synthesis ? Uses substructuring approach ? Standard command objects ? Requires R i li linear materials t i l ? Large rotation/translation Benefits ? Potentially huge time savings ? CMS for linear parts or model, flex for others Applications ? Mechanisms and machines with linear materials ? Non-contact Non contact dominated parts of assembly53Fle exible e Dynamics sRigid g Flexible Flexible Flexible Flexible Flexible Dynamics Dynamics Dynamics Dynamics Dynamics Dynamics Rigid Full Mesh CMS CMS Full Mesh Parts 7 60 ~75k ~75k ~1 mill ~1 mill Total # DOF 625 0 1015 ??? Total Iterations N/A N/A N/A 27 s 24 min N/A Time for Gen N/A N/A N/A 25 s 1 min N/A Time for Use N/A N/A N/A N/A Time for Exp 1s 60 s 217 min 52 s 25 min Too long! Total Time? 2009 ANSYS, Inc. All rights reserved.ANSYS, Inc. ProprietaryEXPLICIT DYNAMICS? 2009 ANSYS, Inc. All rights reserved.54ANSYS, Inc. ProprietaryANSYS Explicit STRNew Product at 12.0 ? Access within ANSYS Workbench ? Familiar user interface ? ANSYS AUTODYN solver Benefits ? WB native, , data sharing g with other WB applications ? Short learning curve for WB users, easiest explicit to learn ? Mature element/solver technology Applications pp ? Impact events ? Highly nonlinear events ? Very short transients ? ALL industries55ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitANSYS Explicit STRMaterials ? Solids S lid ? Rigid and flexible ? Linear/nonlinear ? Erosion ? Failure Benefits ? WB native engineering data easily accessed ? Easy to customize material to match application, or to try what-ifs Applications ? Impacts, drop tests ? Rubber, foam, steel, R bb ceramic, i f t l etc. t ? All solid material industries56ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitANSYS Explicit STRMeshing ? Solids/shells/beams ? Patch dependent and independent ? Swept meshing ? Explicit preference Benefits ? Simulation-based meshing ? Short learning curve from implicit experience i Applications ? Construction/agri equipment ? Automotive/defense? 2009 ANSYS, Inc. All rights reserved.Ex xplicit t Dynamics s57ANSYS, Inc. ProprietaryANSYS Explicit STRConnections ? Body interaction definitions ? Contact regions ? Frictionless/frictional, F i ti l /f i ti l static/dynamic t ti /d i ? Eroding contact Benefits ? Simple/automated definition ?E Ease of f use WB f famous f for ... Applications ? Impacts I t across all ll industries i d ti ? Low velocity to high velocity ? Manufacturing, Manufacturing defense industries58ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitANSYS Explicit STRConnections ? Breakable bonded contact ? Breakable spot welds ? Force F and d stress t failure f il criteria it i Benefits ? Connect dissimilar meshes ? Model conditional connections ?M Model d l connection ti f failures il Applications L i t d components t ? Laminated ? Spot weld/rivet connections ? Glue joints ? Critical in nuclear industry59ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitANSYS Explicit STRConnections ? Discrete reinforcement ? Tie line bodies to interior of solid bodies ? Use any material for solid and line Benefits ? Independent mesh for solid and volume ? Trivial to set up models A li ti Applications ? Reinforced concrete structures ? Steel reinforced rubber ? Civil, nuclear, automotive60ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitANSYS Explicit STR - Applications ? Applications C Electronics? 2009 ANSYS, Inc. All rights reserved.61ANSYS, Inc. ProprietaryANSYS Explicit STR - Applications ? Applications C Aerospace? 2009 ANSYS, Inc. All rights reserved.62ANSYS, Inc. ProprietaryANSYS Explicit STR - Applications ? Applications C Nuclear p power safety y? 2009 ANSYS, Inc. All rights reserved.63ANSYS, Inc. ProprietaryANSYS Explicit STR - Applications ? Applications C Homeland security y? 2009 ANSYS, Inc. All rights reserved.64ANSYS, Inc. ProprietaryANSYS Explicit STR - Applications ? Applications C Sporting p gg goods? 2009 ANSYS, Inc. All rights reserved.65ANSYS, Inc. ProprietaryANSYS AUTODYNTrajectory Contact ? Trajectory T j contact ? Penalty and energy conserving ? Solids/shells/beams/SPH ? Static/dynamic friction ? Option to fix initial penetrations Benefits ? P better suited to work with CAD geometry ? Efficiency improvements Applications ? Mid-high speed Impact events ? Explosive & complex FSI problems ? Defense industry standard improved66ANSYS, Inc. Proprietary? 2009 ANSYS, Inc. All rights reserved.t Dynamics s Ex xplicitR12 Summary? Continued Innovation in Element Technology ? Additional Productivity with Native Workbench Features ? Committed to Advanced Solver Performance ? New Framework for Multiphysics Simulations? 2009 ANSYS, Inc. All rights reserved.67ANSYS, Inc. ProprietaryTHANK YOU? 2009 ANSYS, Inc. All rights reserved.68ANSYS, Inc. Proprietary
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