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各位大家好:' z* X4 J! T! z! u
下列问题与大家探讨,希望大家给我意见,谢谢!
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* A0 `# a' P2 P+ o0 f9 l& L* I1.描述:两个U型槽,一个开口大,一个开口小,正好对着焊接,有两对相接的触面,在接触外进行焊接,中间形成中空形状。我用一维单元进行边到面的连接,出现如下情况,计算不了。请教各位了。(我按照SugGESTION去修改,却找不到要修改的地方)5 c; m3 ]# k# J" h: p
具体在附件图中.! e9 X/ `! W: M+ p! @% O$ c
WARNING- a4 S* L1 e" p* V
Potential problems with the rigid links may exist in the model:
7 g( }: {! E' v2 k- ~ - Rigid Links are connected to elements which do not have rotational degrees of
5 r6 c* J7 M5 i7 ] freedom (DOF). This may result in solver errors.
$ e8 C A J G# {7 D6 H - Rigid Links connected to other rigid links. (Watch for rigid loops.)6 j9 z" Z2 \/ k" p
- Rigid Links not connected to other elements.9 g4 R1 ]! \) s: g9 h- }7 o. A
If solver fails, check for inconsistent degrees of freedom.+ |4 L- T7 R* Z* o' h9 K1 K* q
ERROR% M! R& k5 G! ^& b
DOF 1 of node 4262 is set as dependent by mesh "connection_recipe_1_spider" and mesh
( a/ M* c5 |4 `7 n; x M"connection_recipe_1_mesh".
/ h7 ^( @2 r, E \) B2 hSUGGESTION: Set parameter "AUTOMPC" to "YES" in the "Solution Attributes..." dialog., O. n5 l" n% j) ?! o: @
Total: 1 error and 1 warning! }5 _$ H/ G& H, I1 P: [
2.我的目的是想用上述模型进行焊接模拟,两对接触面用“Surface-to-Surface Guling”和两对接触面用“Mesh Mating Condition”进行建模。仿真结果相差很小。请问用这种方法模拟焊接,对吗?有没有其它方法模拟两块板料的焊接问题?(肯定有,请大家赐教赐教?)3 f5 ?3 y- w. l* f6 g/ {
3.我在模型上施加力,在线上施加力和在面上施加力,结果还是有一些差别的,请教是否两种方法都可以用?(在线上施加力和在面上施加力,其力的大小是一样的,在面上其实等于施加了压强) |
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