论坛 › G0201：FLAC3D/FLAC2D › overlay n什么意思？ 怎么用？请指点一下

xiaogezhangwei 发表于 2005-8-7 07:59:27

overlay n什么意思？ 怎么用？请指点一下

overlay n什么意思？ 怎么用？请指点一下

xiaogezhangwei 发表于 2005-8-11 17:58:34

Re:overlay n什么意思？ 怎么用？请指点一下

请指教！！！

huahua2005 发表于 2005-8-11 18:54:04

Re:overlay n什么意思？ 怎么用？请指点一下

我也沒用過，不過下面的內容可能對你有用～僅供參考～～
The optional keyword overlay assigns either two overlaid sets of five constant-strain tetrahedral elements to each zone (n = 2) or one set of five tetrahedral elements to each zone (n = 1). The default is set to double-overlaid elements (n = 2).
In FLAC3D, the discretization process starts with the coarser grid: zones are defined and then discretized (internally) into tetrahedra. An eight-noded zone, for instance, can be discretized into two (and only two) different configurations of five tetrahedra。The calculation of nodal forces (based on evaluation of strain rates and stresses) can be carried out using one overlay or a combination of two overlays. The advantage of the twooverlay approach is to ensure symmetric zone response for symmetric loading.

xiaogezhangwei 发表于 2005-8-12 07:58:37

Re:overlay n什么意思？ 怎么用？请指点一下

overlay 这样是不是与节点有关，因为第一种四面体各边在node 1相交，第二种在node 2。

200802172 发表于 2010-8-18 16:16:35

有谁知道overlay 怎么模拟吗？

05041773 发表于 2010-8-21 14:56:23

一起学习了，谢谢啊

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