复合材料多尺度模拟.pdf

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1、Release3.2.1–February2009Thenonlinearmulti-scalematerial&structuremodelingplatformFor...Materialsuppliersandtheircustomersintheautomotive,aerospace,Whosuffer...consumerelectronics,...industriesFromlongandcostlydevelopmentcyclesofsub-optimalproductsandmaterialuse...DIGIMAT...Helpsreduc

2、ingthecostanddevelopmenttimeofoptimalproduct...Using...Nonlinearmulti-scalematerialandstructuremodelingtechnology...Thathelps...Understandingthebehaviorofadvancedmaterialsandestablishingthelinkbetweenthematerialprocessingandtheproductperformanceviathemorphologyofthematerialmicrostruct

3、ure.www.e-Xstream.comMean-FieldHomogenizationTMDigimat-MFcanbeusedtopredictthenonlinearconstitutivebehaviorofmulti-phasematerials(e.g.stress-strainofareinforcedplastic)basedontheconstitutivepropertiesofthebasematerialsandthecompositemorphology(fiberweightfraction,length,orientation).D

4、igimat-MFisaccurate,efficientandveryeasytolearnanduse.Nonlinear(per-phase)MaterialModelsHomogenizationMethods♦Linearthermo-elastic:♦Mori-Tanaka♦Interpolativedoubleinclusion-Anisotropicphasesstnd-Temperature-dependentproperties♦1and2orderhomogenizationschemes♦Linearviscoelastic♦Multi-s

5、tep,multi-levelhomogenizationmethods♦Elasto-plastic:-Isotropichardening:power,exponentialorexponentiallinearlawFailureIndicators-SmalldeformationwithlargerotationCyclingofnonlinear♦Cyclicelasto-plastic:compositematerials♦Appliedatmicroand/ormacroscale♦-Kinematichardening:linearwithres

6、torationFailuremodels:♦Pressure-dependentelasto-plastic(Drucker-Prager)-Maxstress/Max♦Damagematerialmodel(Lemaître-Chaboche)strain-Tsai-Hill2D&3D♦Elasto-viscoplastic:-Azzi-Tsai-Hill2D-Creepmodels:Norton/power/extended-Tsai-Wu2D&3Dpower/hyperbolicsinuslaws-Hashin-Rotem2D♦Hyperelastic(f

7、initestrain):-Hashin2D&3D-neo-HookeanComparisonoffailureindicators-Mooney-RivlinMaterialmodelwithdamage-Ogden-SwansonLoading-Storakers(compressiblefoams)♦Elasto-viscoplastic(finitestrain):♦Thermo-mechanical-Leonov-EGP♦Multi-axialstressorstrainMicrostructureMorphology♦MonotonicorCyclic

8、♦Impo