请教一个关于接触的问题,来源于一个warning
***WARNING: In contact pair 20, node 61047 of instance S-1-1-1 on the slavesurface ASSEMBLY_S1 has 183.36 times more mass than the mass of
node 120110 of instance N-1 on the master surface
ASSEMBLY_N-3. Significant contact noise may result with the
kinematic contact algorithm when the slave nodes have
significantly greater mass than the master nodes. Suggested
workarounds include setting the WEIGHT parameter so that surface
ASSEMBLY_N-3 is a pure slave surface in the contact pair,
using mass-scaling to adjust the ratio of nodal masses, or using
the penalty contact algorithm.
这里面说的slave面上的点质量比master面上点质量大180多倍,会出现问题,请教一下:
1 这种质量的比例为什么会引入接触噪声,这种接触噪声最终会影响模型分析结果的什么地方
2 什么是pure slave surface
3 mass-scaling 是一种什么样的操作,采用这种操作有什么好处
谢谢! mass-scaling 只对显式有用
可以提高最大稳定时间 我也碰到这个问题,改成penalty就好了!!
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