二階元素於接觸問題的使用【二阶单元接触】
本帖最后由 zsq-w 于 2010-9-24 14:06 编辑參考了手冊和原廠教程,
比較了二階元素於接觸問題的正確性和相關設定。
希望對此問題有所幫助。 楼主发的都是经典啊!绝对要顶 好东西,楼主这种教学方式太好了 顶楼主,受益匪浅~ 本帖最后由 seawideyp 于 2009-7-15 15:20 编辑
我记得书上说C3D10M适用于接触和弹塑性问题啊
怎么没有c3d10准确了呢?? 我记得书上说C3D10M适用于接触和弹塑性问题啊
怎么没有c3d10准确了呢??
seawideyp 发表于 2009-7-15 15:01 http://forum.simwe.com/images/common/back.gif
你看错了吧,康版明明说C3D10M很准确的,虽然不是最准确的。 C3D10M是5.119
C3D10是5.093
我是不是有点钻牛角尖{:3_62:} 個人覺得
C3D10M通用性較高。
因為有時候不是每種問題用sur to surf都能確保收斂的 本帖最后由 fuchong 于 2009-7-16 09:54 编辑
The modified second-order tetrahedral elements (C3D10M) in Abaqus/Standard are designed to be used in complex “hard” contact simulations. Regular second-order tetrahedral elements (C3D10 and C3D10I) have zero contact force at their corner nodes, leading to poor predictions of the contact pressures. They should, therefore, not be used in “hard” contact problems. The modified second-order tetrahedral elements can calculate the contact pressures accurately.
Second-order elements can be used in contact simulations with a penalty or augmented Lagrange constraint enforcement method (see “Contact constraint enforcement methods in Abaqus/Standard,” Section 33.1.2) to yield better stress distributions at the contact interface. The regular tetrahedral elements may not perform well in analyses involving impact or nearly incompressible material response, such as in problems with a large amount of plastic deformation. The modified second-order tetrahedral elements should be used in these circumstances. 9# fuchong
谢谢回复~~~~~~~~ 好厉害啊!!! 先留个名慢慢研究。。。 我的帮助文件打不开,郁闷 这个问题终于解决了,不错,楼上的厉害 8# konadoul
赞,额持有同样观点.... 嘻嘻,多谢多谢~ fuchong 发表于 2009-7-16 07:51
The modified second-order tetrahedral elements (C3D10M) in Abaqus/Standard are designed to be used i ...
说的很清楚:lol 感谢。。。。。。我的问题也终于得到解决 好贴!! 感谢楼主
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