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我对碰撞那面的了解比较浅。据我所知,FVM也可以用来算固体力学,起码小变形可以。OpenFOAM这面算小变形很简单,原理就是1)用FVM离散固体位移方程,2)网格变形,3)下一步推进。
我不太理解的是,按照这个思路,大变形的情况下,网格变的非常非常差,像是左边那种可乐罐子的网格,按照FVM的角度来看,基本是没法算的。
很好奇lsdyna,或者类似的软件是怎么实现的?