- 积分
- 3
- 注册时间
- 2012-10-23
- 仿真币
-
- 最后登录
- 1970-1-1
|
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. |
|