ls dyna里面的混凝土破坏模型的72个参数如何取值

ls dyna里面的混凝土破坏模型的72个参数如何取值

你用的是ansys里面的dyna吗？那个里面的参数要看这个部分的说明：
Concrete Damage Model

The Concrete Damage model is used to analyze buried steel reinforced concrete subject to impact loadings. This model requires constants for the concrete and reinforced materials, and also requires tabulated equation of state constants. (Refer to Equation of State Models for a detailed description of the tabulated equation of state.) Input the density (DENS) and Poisson’s ratio (NUXY) with the MP command. Input all values shown below with the TB,CONCR,,,,2 command and locations 1 – 78 of the TBDATA command:

TB,CONCR,,,,2
TBDATA,1,σf (maximum principal stress for failure)
TBDATA,2,A0 (cohesion constant)
TBDATA,3,A1 (pressure hardening coefficient)
TBDATA,4,A2 (pressure hardening coefficient)
TBDATA,5,A0Y (cohesion for yield)
TBDATA,6,A1Y (pressure hardening coefficient for yield limit)
TBDATA,7,A2Y (pressure hardening coefficient for yield limit)
TBDATA,8,A1F (pressure hardening coefficient for failed material)
TBDATA,9,A2F (pressure hardening coefficient for failed material)
TBDATA,10,B1 (damage scale factor)
TBDATA,11,B2 (damage scale factor for uniaxial tension)
TBDATA,12,B3 (damage scale factor for triaxial tension)
TBDATA,13,PER (percent reinforcement)
TBDATA,14,Er (elastic moduli of reinforcement)
TBDATA,15,NUXYr (Poisson’s ratio of reinforcement)
TBDATA,16,σy (initial yield stress)
TBDATA,17,Etan (tangent modulus)
TBDATA,18,LCP (load curve ID giving rate sensitivity for principal material)
TBDATA,19,LCR (load curve ID giving rate sensitivity for reinforcement)
TBDATA,20-32,λ1-λ13 (tabulated damage functions 1-13)
TBDATA,33-45,η1-η13 (tabulated scale factors 1-13)
TBDATA,46,GAMA (temperature constant)
TBDATA,47,E0 (initial internal energy)
TBDATA,48,V0 (initial relative volume)
TBDATA,49-58,εv1-εv10 (volumetric strain data values 1-10; natural log of the relative volume)
TBDATA,59-68,C1-C10 (volumetric pressure values at εvi)
TBDATA,69-78,T1-T10 (temperature values at εvi)

这个里面对每个混凝土的参数都有说明，你也可以在simwe论坛上搜索下，有别人用过这个的一些参数可以参考下你自己的破坏模型的定义，还有，这些参数在一个材料里面并不是所有都要定义的

当然如果你这里知识在dyna里面的，那就是是LS-DYNA中的72#材料，*MAT_CONCRETE_DAMAGE

你随便找个dyna的帮助文档，都有这个里面的说明，如果需要，我可以给你传一个帮助闻文档，这个不太好贴出来

用白色的颜料画几条表示水波

提交计算后，使用文本编辑器来编辑生成的k文件，手动修改。