常用弹塑性料模型

常用弹塑性材料模型下表列出了ANSYS/LS-DYNA材料模型以及相应的LS-DYNA命令

B.2.1. Isotropic Elastic Example: High Carbon Steel

MP,ex,1,210e9 ! Pa

MP,nuxy,1,.29 ! No units

MP,dens,1,7850 ! kg/m3

B.2.7. Bilinear Isotropic Plasticity Example: Nickel Alloy

MP,ex,1,180e9 ! Pa

MP,nuxy,1,.31 ! No units

MP,dens,1,8490 ! kg/m3

TB,BISO,1

TBDA TA,1,900e6 ! Yield stress (Pa)

TBDA TA,2,445e6 ! Tangent modulus (Pa)

B.2.10. Bilinear Kinematic Plasticity Example: Titanium Alloy

MP,ex,1,100e9 ! Pa

MP,nuxy,1,.36 ! No units

MP,dens,1,4650 ! kg/m3

TB,BKIN,1

TBDA TA,1,70e6 ! Yield stress (Pa)

TBDA TA,2,112e6 ! Tangent modulus (Pa)

B.2.11. Plastic Kinematic Example: 1018 Steel

MP,ex,1,200e9 ! Pa

MP,nuxy,1,.27 ! No units

MP,dens,1,7865 ! kg/m3

TB,PLAW,,,,1

TBDA TA,1,310e6 ! Yield stress (Pa)

TBDA TA,2,763e6 ! Tangent modulus (Pa) TBDA TA,4,40.0 ! C (s-1)

TBDA TA,5,5.0 ! P

TBDA TA,6,.75 ! Failure strain

B.2.16. Piecewise Linear Plasticity Example: High Carbon Steel

MP,ex,1,207e9 ! Pa

MP,nuxy,1,.30 ! No units

MP,dens,1,7830 ! kg/m3

TB,PLAW,,,,8

TBDA TA,1,207e6 ! Yield stress (Pa)

TBDA TA,3,.75 ! Failure strain

TBDA TA,4,40.0 ! C (strain rate parameter)

TBDA TA,5,5.0 ! P (strain rate parameter)

TBDA TA,6,1! LCID for true stress vs. true strain (see EDCURVE below) *DIM,TruStran,,5

*DIM,TruStres,,5

TruStran(1)=0,.08,.16,.4,.75

TruStres(1)=207e6,250e6,275e6,290e6,3000e6 EDCURVE,ADD,1,TruStran (1),TruStres(1)

B.2.25. Rigid Material Example: Steel

MP,ex,1,207e9 ! Pa

MP,nuxy,1,.3 ! No units MP,dens,1,7580 ! kg/m3 EDMP,rigid,1,7,7