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发表于 2011-10-20 16:55:25
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来自 欧洲
caoer 发表于 2011-10-4 04:43
\vec{n} is a normalized vector, represents the direction of velocity.
the dot product of two vectors ...
Hi Caoer,
In ls-dyna, I found damping settings and I am trying to use global damping. The explanation of global damping is a kind of force applied to each node, F=-f(t)mv, where f(t) is a curve representing damping fator, m and v should be the mass and velocity of each node, respectively. So what's the difference between the ls-dyna' damping and ABAQUS's viscous pressure? |
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