What Is New In Abaqus 2016 - CADCAM
What is new inAbaqus 2016Marko VrhSIMULIA seminarLjubljana, 12.4.2016
Agenda Abaqus technical overview Abaqus/CAEAbaqus/StandardAbaqus/ExplicitAbaqus/CFD Powerfull but frequently overlooked features Latest capabilities in Abaqus CEL SPH DEM What is new in latest release Abaqus 20162www.cadcam-group.eu
Abaqus/CAE3www.cadcam-group.eu
Abaqus/CAEModern graphical interface Modular & well organized Easy to learn & use Object-action paradigm Model Tree Customizable toolbars CAD-compatible view manipulation4www.cadcam-group.eu
Abaqus/CAEGeometry & model import Create moderately complex geometry Import neutral CAD formats Associative CAD interfaces preserve analysis attributeswhen geometry changesBone geometryimported from STL file Complete set of geometry repair toolsCADAbaqus/CAE5Geometry repair toolsetwww.cadcam-group.eu
Abaqus/CAEPowerful & flexible meshing Fast, automatic free meshing Semi-automatic hex meshing Abstract away unimportant features usingvirtual topologySemi-automatic hex meshesAutomatic free meshAutomatic virtual topologyremoves step-like feature6www.cadcam-group.eu
Abaqus/CAEPreferred tool for visualizing Abaqus results High performance for large models Transparency View cuts Probing XY plotting Much more . . .(Courtesy of AVL List GmbH)7www.cadcam-group.eu
u
Abaqus/Standard Based on implicit solution techniques Intended for static and structural dynamic eventsLinear or nonlinear behaviorFrequencyClip insertionShaft seal insertionTire noiseElectrical fuse heatingGasket sealingBicycle frame stress9www.cadcam-group.eu
Abaqus/Explicit Based on explicit time integration Intended for high-speed transient dynamic eventsAlso suited for highly nonlinear quasi-static eventsDeep drawingBottle drop10Blow molding“ the goal at BMW to completely eliminateprototype hardware and testing,such issues can only be subsequently evaluatedthrough simulation.”Bottle conveying systemwww.cadcam-group.eu
Extensive Material models inStandard & Explicit analysis Metals, rubbers, and composites Human tissueCast iron plasticityAdditional materials include: Linear/nonlinear elasticity and plasticityIsotropic or anisotropicRate and temperature dependenceSoils and rocksConcrete and ceramicsPastes and polymersViscoelastic rubberDamage & failure modelingViscous pasteTESTReinforced concreteSIMULATIONBulk failure11Soil & rockwww.cadcam-group.eu
Awesome contact and joining functionalityin Standard & Explicit analysisJENGA USING ABAQUSAwesome contact functionalityAdvanced joining techniques tosimulate adhesives and delaminationWIPE DISPENSINGLarge deformation with changingcontact conditions12www.cadcam-group.eu
Abaqus/CFD13www.cadcam-group.eu
Abaqus/CFD Pre-Processing and modeling supportToday: Abaqus/CAEConcept of “model type” in Abaqus/CAEModel type “CFD” enables CFD model creationTransient solver, Steady-state solverLaminar and turbulent flowsExternal flow: velocity andvorticity around 35º Ahmed body14www.cadcam-group.eu
Abaqus/CFD Co-simulation engine (CSE) Couple Abaqus/Standard/Explicit with Abaqus/CFD Stabilized segregated FSI algorithm for unstableproblems15Native fluid-structure interaction modeling capabilitywww.cadcam-group.eu
Two powerfull but frequently overlookedfeatures in Abaqus16www.cadcam-group.eu
C3D10I: General-Purpose Tetrahedral Element I “Improved Surface Stress” Not Incompatible Modes Key features Provides accurate surface stress predictions Suitable for bending-dominated problems Handles incompressible material behavior Works well with contact Some added computational expenseAnalytical solution:38,400 psiC3D10M Benefit Simplifies element selectionC3D10I matchesanalytical solutionC3D10I17www.cadcam-group.eu
C3D10I: General-Purpose Tetrahedral Element Elastoplastic knuckleNote no extrapolationerror in stress contour plot.18www.cadcam-group.eu
Implicit DynamicsIntroduced in Abaqus 6.9EF Very good for certain quasi-static problems in which the timescale ismeasured in seconds but statically unstable Rubber tracks Belt drives “Snap-fit” problems Keyword: “*DYNAMIC, Application ” Quasi-static (for aggressive damping in quasi-static models) Moderate dissipation (for moderate damping— “dynamic” problems for whichcontact does not need most accurate precision) Transient fidelity (for most accurate solution—truly “dynamic” problems) Often a good “standard practice” tool for well-understood quasi-staticproblems 19Often a superior solution to quasi-static problems currently being run in /Explicitwww.cadcam-group.eu
Latest capabilities in AbaqusCEL/SPH/DEM20www.cadcam-group.eu
Coupled Eulerian-Lagrangian Method (CEL) Lagrangian elements nodes are fixed within material elements deform as material deforms material boundary element boundary Eulerian elements21 nodes are fixed in space material flows through elements material boundary is represented by volume fraction Interface reconstruction advectionwww.cadcam-group.eu
Explosion inside a gun barrel Eulerian material is ideal gas Explosives are modeled with gas inflators inside the barrel Contour plot shows Mises stress in the structureCoutesy of Picatinny Arsenal22www.cadcam-group.eu
Land mine explosion JWL ideal gas (air) Rigid structure deformable plate23www.cadcam-group.eu
Water entry of an all-terrain vehicle Water void Rigid structure24www.cadcam-group.eu
Curtain airbag deploymentCourtesy of Takata25www.cadcam-group.eu
Thermal Interaction with CEL Extended CEL to thermal stress simulation withcontact interactions Complements thermal stress element introduced in Abaqus 6.11Applications include forging, mold filling,manufacturing processes, Hot forging26www.cadcam-group.eu
Recent Developments in SPH27www.cadcam-group.eu
SPH Implementation within Abaqus/Explicit 28SPH Concept Mesh-free Lagrangian computational method (incepted in 1977)Continuum modeling method (like FEM) derived in the context of interpolation theory Extreme deformation with fragmentationExtremely high deformations problems where CEL is inefficient and Lagrangian FEM isdifficult Impact fracture: ballistics, shattering, fragmentation Spraying Snow compactionwww.cadcam-group.eu
Ice Impact Analysis Study of Ice balls (hails) impact to constructmaterial model and comparison withexperimental data.Model derived fromJeffery Dwayne Tippmann, ‘Development of a Strain RateSensitive Ice Material Model for Hail Ice Impact Simulation2011’ Uses a Elastic-Rate dependent plastic withtensile failure material definition.Experimental Set UpIce deformation and breakage patterns29www.cadcam-group.eu
Ice Impact Analysis: Mises StressContour of Mises Stress50.8 mm Ice impacting withan initial velocity of 60 m/s30www.cadcam-group.eu
Ice Impact Analysis: Experiment vs SPHSimulation(a) t 91 μs(a) t 135 μs(a) t 223 μsLongitudinalcrackingpatternsconsistent withexperiments.31www.cadcam-group.eu
Ice Impact Analysis: Reaction Force-Test vsSPHAbaqus/Explicit Results32www.cadcam-group.eu
Impact: rubber ball impact on a glass plate Star-shaped cracking pattern in SPH Crack propagates along mesh lines if no conversion isusedDemonstration for Corning33www.cadcam-group.eu
Grease in a CV Joint – Bending shaft 34Grease migrates from one cavity to the nextwww.cadcam-group.eu
DEM in Abaqus/Explicit35www.cadcam-group.eu
Motivation for Implementing DEM in Abaqus More frequent requests to simulate particulate media 36Often involving interactions with structures modeled with nonlinear FEMLeverage the strong general contact capabilities of Abaquswww.cadcam-group.eu
Target ApplicationsEquivalent Plastic Strain PlotStresses in the tire37www.cadcam-group.eu
What is new in latest release Abaqus 201638www.cadcam-group.eu
Advances in general contact Improved heuristics for automatically transitioningbetween different contact formulations can significantlyimprove convergence behavior in Abaqus/Standard.Edge-to-Edge(supplementary formulation)Edge-to-Surface(supplementary formulation)Surface-to-Surface(primary formulation)39www.cadcam-group.eu
Advances in general contact 40New vertex-to-surface supplementary formulationimproves contact behavior at convex corners.www.cadcam-group.eu
Advances in general contact Individual edges can be involved in multiple contactsOlder releasesNot in contact onthis sideAbaqus 2016Example: Shell wedge bearing down on a beam pinned at its ends41www.cadcam-group.eu
Contact output for Abaqus/Explicit CDISP “family” of output variables added CTANDIR output added 42COPEN, CSLIP1, CSLIP2New member of this family: CSLIPEQ (total slip length)CTANDIR1, CTANDIR2Vector output of t1 and t2 local tangent directionsSlip rate output variables added CSLIPR1, CSLIPR2, CSLIPRMAGwww.cadcam-group.eu
Contact output for Abaqus/Explicit CSTATUS output addedw43www.cadcam-group.eu
Expanded element library Pyramid element for stress analysis Compatible transition between tet and hex meshHighly requested by customersMultiphysics elements Coupled temperature-displacement C3D10T, C3D10HT .Coupled pore pressure-displacement C3D10PH, C3D10P Coupled pore pressure-temperature-displacement C3D10PHT,C3D10PT.Finite sliding thermal contact44www.cadcam-group.eu
Rigid body rotation of tied solid surfaces Abaqus/Standard will by default account for rotations ofoffsets in solid mesh tiesAbaqus 6.14Similar capability is implemented inAbaqus/Explicit within the frameworkof surface-based cohesive behavior.Abaqus 2016Original configuration45Final configurationwww.cadcam-group.eu
Material modeling enhancements Rate dependent nonlinear kinematic hardening plasticityOrthotropic clay plasticity for geomechanics applicationsImport of Johnson Cook plasticity for spring back after high rateimpact eventsFig 1 InitialconfigurationFig 2 End ofimpact event46Fig 3 Finalconfigurationwww.cadcam-group.eu
Tracer particles for CEL Tracer particles follow the material motion in CEL simulations andallow extraction of material point results.ModelBlast(294k elements, 3400 tracerparticles)Sloshing(13k elements, 2940 tracerparticles)Flat airbagTank sloshing example w/ tracer particles(52.5k elements, 1440 tracerparticles)With 0862602582Minimal impact on performance47www.cadcam-group.eu
DEM particle generation Particle generation can now be based on: Evolving inlet surfacesUser-specified size distributionUser-specified mass flow rateUser-specified inlet velocitySpecified vs. Observed Distribution50454035Counts302520Screen Sorter15105000.010.020.030.040.050.06Particle SizeSpecified DistributionExpanding inlet48Rotating inletParticle GenerationMoving inletwww.cadcam-group.eu
DEM particle interactions Simplified specification of Hertz normal contact between particles Adhesive contact based upon the Johnson-Kendall-Roberts (JKR) modelhas been introducedComparison of mixing process, without and with adhesion49www.cadcam-group.eu
Improved treatment of SPH boundaries Introduction of virtual particles improves accuracyof SPH wall conditions.OldBoundary -group.eu
Usability Fixed Copy/Paste issues in past releases Copy text from prompt area to clipboard Copy content from GUI widgets and paste the contents after closing the widget window! Default font and glyph size modified Default font size for legend, title block,state block, x-y plots is increased to 12 Default glyph size for Viewer and CAEentities is increased from 6 to 1251www.cadcam-group.eu
Usability Expand viewport to Full Screen (F11) F11 toggles back to default view Freebody usability Highlights the location of user-definedsummation points Improved default colors of Momentarrows52www.cadcam-group.eu
Results visualization Update min/max location according to view cutMin/max location before view cut53View cut with updated min/max locationwww.cadcam-group.eu
Instead of conclusion54www.cadcam-group.eu
Technology SophosticationOne tool for allDesigners55Design EngineersExpertswww.cadcam-group.eu
Solutions for the entire range of industriesConsumer Packaged GoodsPlastic and Glass FormingConveyor SystemsContainer DropPressure AnalysisThermal AnalysisBottle SealingAdhesivesAerospace & DefenseLife SciencesTissue ModelingSurgical EquipmentStentsDrug DeliveryOrthopedicsMedical PackagingAvionicsLanding GearAerostructuresAeroenginesCompositesDefense SystemsSpace SystemsHigh TechAutomotive & nessBrake SystemsPowertrainElectronicsArchitecture & ConstructionEarthquake loadingStructural integrity due to fireConcrete analysisSoil-pore interactionFailure limitsEnergyIndustrial EquipmentNonlinear Stress AnalysisThermal AnalysisCyclic LoadingFlexible Multibody DynamicsSoil-Structure Interaction56Thermal cycling of solder jointsDrop TestingVibration AnalysisSemiconductorsCircuit BoardsHand-held DevicesComputers & PeripheralsWave loading on rigs and pipelinesPiping and pressure vesselsThermal analysisBlast loadingDrop or Impactwww.cadcam-group.eu
Thank you!www.cadcam-group.eu
Abaqus/CFD Co-simulation engine (CSE) Native fluid-structure interaction modeling capability Couple Abaqus/Standard/Explicit with Abaqus/CFD Stabilized segregated FSI algorithm for unstable problems. 16 www.cadcam-group.eu Two powerfull but f
ABAQUS/Explicitt * ABAQUS/Explicit Example Problems Manual, 5.8 ABAQUS ABAQUS/Standard Verification Manual, 6.2 ABAQUS/Explicit VerificationManual_6-2.pdf *ABAQUS/CAE ABAQUS ABAQUS/Standard.enc n Manual, 6.2 * ABAQUS/Explicit Benchmarking-Manual_6-2.pdf Benchmarking Manual, 6.2 * ABAQUS/CAE ABAQUS ABAQUS/Standard * ABAQUS/Explicit Examples .
ABAQUS Scripting User’s Manual 13. ABAQUS Scripting Reference Manual 14. ABAQUS Release Notes 15. ABAQUS Installation and Licensing Guide 3 1.2 Programs 1 INTRODUCTION 1.2 Programs ABAQUS/Standard and ABAQUS/Explicit are both available in the CUED teaching system comput-ers. ABAQUS/CAE is the pre-processor
Buckling, Postbuckling and Collapse Analysis 12 Composites Modeler for Abaqus/CAE 13 Co-simulation with Abaqus and Dymola 15 Crashworthiness Analysis with Abaqus 16 CZone for Abaqus 17 Electromagnetic Analysis with Abaqus 18 Element Selection in Abaqus 19 Fitness-for-Service Analysis with Abaqus 20
The Abaqus Student Edition consists of Abaqus/Standard, Abaqus/Explicit, and Abaqus/CAE only. Full HTML documentation is included. . Abaqus tutorials. 6 System requirements Operating system: Windows XP, Windows Vista, and Windows 7 Processor: Pentium 4 or higher
Abaqus services: Abaqus/Standard solver and Abaqus/Explicit solver. This software includes the SIMULIA Co-Simulation Engine and the foundation of all Abaqus APIs. CAA developer software for Abaqus APIs: output database (ODB) C API, user subroutines API, Abaqus Scripting Interf ac
ABAQUS/Explicit User’s Manual (Volumes I and II) 1.2 Programs ABAQUS/Standard and ABAQUS/Explicit are both available in the CUED teaching system comput-ers. ABAQUS/CAE is the pre-processor and ABAQUS/Viewer in the post processor. PATRAN is an establi
Co-simulation with Abaqus and Dymola (DYM) 15 Crashworthiness Analysis with Abaqus (CRASH) 16 CZone for Abaqus (CZA) 17 Electromagnetic Analysis with Abaqus (EMAG) 18 Element Selection in Abaqus (ELEMC) 19 Fitness-for-Service Analysis with Abaqus (FFSA) 20 Flexible
- Shock and acoustic structural Cosimulation - Abaqus/Standard to Abaqus/Explicit cosimulation - Abaqus/CFD to Abaqus/ Standard or Abaqus/Explicit Fluid structure interaction (FSI) Conjugate heat transfer (CHT) Flow analysis (incompressible) - Laminar and turbulent Linear Perturbation Analyses Static stress/displacement analysis
