再请教sel rec surf surfx xx yy zz命令参数的问题

chaylo

RT比方说附件中的shell单元，想要查看其Y向弯矩的云图，应该这样设置xx，yy，zz？
谢谢大家。

chaylo

我的仿真币为什么是负的

chaylo

再+一个仿真币
ycding版主曾经指教过，“

以一单位宽度长10m承受1Pa均布压力悬臂壳为例，sel rec surf surfx 1 1 0，则投影面法向在xy平面内，法向投影到壳上的x向指向y正向，则y正向即为面坐标的x正向，竖向弯矩应是my。”
弯矩如图：% A7 U+ ~; l" o; D0 {

但小弟愚钝，版主的几句话看了几个月也没搞清楚。

哪位xdjm能帮忙解释解释？

谢谢！

ycding

sel recover surfacesurfX Xx Xy Xz
The surfx vector (Xx, Xy, Xz) enables a surface coordinate system to be generated for all nodes used by the shell-type SELs in the optional range. The surface coordinate system, x′y′z′, has the following properties: (1) z′ is normal to the surface; (2) x′ is the projection of the given surfx vector onto the surface; and (3) y′ is orthogonal to x′ and z′. The z′-direction is found at each node by taking the average normal direction of all shell-type SELs in the range are considered. If the surfx vector is aligned at z′ at any node, then processing stops and an error message is displayed. To proceed, designate a different surfx vector, or restrict the range of shell-type SELs considered.

heguangji1203

这个确实不懂，同问。