dynaform5.9材料参数设置问题
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1、在dynaform5.9版本中设置材料参数,硬化准则选择有好几种,Exponential(Swift)、Exponential(Voce)、Exponential(Gosh)、Exponential(Hocket-sherby)有什么区别?
2、如果选择用Load curve,与指数型硬化有有何区别呢?在精度上哪个更恰当些?
3、选用了指数型硬化准则,输入了P1、P2、SPI确定之后,提示no curve defined,是否可以继续设置,还是没有设置完全?
2、如果选择用Load curve,与指数型硬化有有何区别呢?在精度上哪个更恰当些?
3、选用了指数型硬化准则,输入了P1、P2、SPI确定之后,提示no curve defined,是否可以继续设置,还是没有设置完全?
P1 Material parameter:
HR.EQ.1.0: Tangent modulus,
HR.EQ.2.0: k, strength coefficient for Swift exponential hardening
HR.EQ.4.0: a, coefficient for Voce exponential hardening
HR.EQ.5.0: k, strength coefficient for Gosh exponential hardening
HR.EQ.6.0: a, coefficient for Hocket-Sherby exponential hardening
HR.EQ.7.0: load curve ID for hardening in 45 degree direction. See
Remark 2.
P2 Material parameter:
HR.EQ.1.0: Yield stress
HR.EQ.2.0: n, exponent for Swift exponential hardening
HR.EQ.4.0: c, coefficient for Voce exponential hardening
HR.EQ.5.0: n, exponent for Gosh exponential hardening
HR.EQ.6.0: c. coefficient for Hocket-Sherby exponential hardening
HR.EQ.7.0: load curve ID for hardening in 90 degree direction.
See Remark 2.
ITER Iteration flag for speed:
ITER.EQ.0.0: fully iterative
ITER.EQ.1.0: fixed at three iterations
Generally, ITER=0 is recommended. However, ITER=1 is somewhat
faster and may give acceptable results in most problems.
M m, exponent in Barlat’s yield surface, absolute value is used if negative.
CRCN Chaboche-Roussiler hardening parameter, see remarks.
CRCA Chaboche-Roussiler hardening parameter, see remarks.
R00 R00, Lankford parameter in 0 degree direction
GT.0.0: Constant value,
LT.0.0: Load curve or Table ID = (-R00) which defines R value as a
function of plastic strain (Curve) or as a function of temperature and
plastic strain (Table). See Remark 3.
你可以仔细看看,就OK了,这个最好不要让你告诉你,自己看懂了,会对LSDYNA的核心狠有体会,DYNAFORM也就更简单了~