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[接触] 罚接触的刚度缩放因子设置多少就可以接近运动接触的水平

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发表于 2014-8-23 10:50:18 | 显示全部楼层 |阅读模式 来自 北京
我做一个多体的分析,受到约束条件的显示,不能使用运动接触,使用就报错,用罚接触吧又不停的穿透。只好用contact control来改变接触刚度缩放因子。我看文档这个因子改的越大,计算越缓慢。不知道该改到什么程度就可以有一个可接受的既不过分穿透,又能节省计算时间的解决方案。

顺带给大家分享一下不能用运动接触,只能用罚接触的一些情况:
The penalty contact algorithm must be used for all contact pairs involving a rigid body if a linear constraint equation, multi-point constraint, surface-based tie constraint, or connector element is defined for a node on the rigid body. For all other cases, Abaqus/Explicit enforces equations, multi-point constraints, tie constraints, embedded element constraints, and kinematic constraints (defined using connector elements) independently of contact constraints; therefore, if a degree of freedom participates in a linear constraint equation, multi-point constraint, tie constraint, embedded element constraint, or kinematic constraint in addition to a contact constraint, the contact constraint will usually override these constraints (see the discussion in “Conflicts with multi-point constraints” in “Common difficulties associated with contact modeling using contact pairs in Abaqus/Explicit,” Section 37.2.2). Hence, the penalty contact algorithm is recommended if these constraints need to be strictly enforced.
 楼主| 发表于 2014-8-23 10:56:22 | 显示全部楼层 来自 北京
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我先改成了10000,看表格我感觉我在作死:


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 楼主| 发表于 2014-8-24 17:20:00 | 显示全部楼层 来自 北京
我把接触刚度缩放因子写成10000也不成。穿透依然。
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