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各位大家好:
2 s# e" a- a" x* V下列问题与大家探讨,希望大家给我意见,谢谢!
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1.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)8 y9 j. j$ _: p# E3 ^2 ~* a
具体在附件图中.$ {. P7 t2 y+ G* c( G& k- u
WARNING8 ]9 k+ j3 y- V' g. D
Potential problems with the rigid links may exist in the model: Y @1 g% F h6 R/ U* m
- Rigid Links are connected to elements which do not have rotational degrees of 4 f% S3 P' o, k( \3 d
freedom (DOF). This may result in solver errors.
* Q: A: O9 P: e1 g5 j0 T4 i - Rigid Links connected to other rigid links. (Watch for rigid loops.)- K! |, F: [# q6 y+ a# C, Q2 {
- Rigid Links not connected to other elements.
2 k' B+ z' n% V1 rIf solver fails, check for inconsistent degrees of freedom.
9 W' u! m4 P& R+ r/ ]ERROR; A9 J. r- e/ E+ U8 D
DOF 1 of node 4262 is set as dependent by mesh "connection_recipe_1_spider" and mesh$ R9 }) _' R6 Q7 Z$ h
"connection_recipe_1_mesh".* z; ~6 G5 d+ T- ~ @5 L
SUGGESTION: Set parameter "AUTOMPC" to "YES" in the "Solution Attributes..." dialog.7 j8 [+ s+ X3 l: j# w3 s- ?( L
Total: 1 error and 1 warning8 \' p9 c( p& \6 D- d& S
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?)2 x/ T7 ~5 f& m( Y O
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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