弱弱的问一句element inside out是什么意思啊?

ysnow

初学,看帮助也没有看懂

blueskyzly

单元穿透的意思！
解决方法是在check里面选择inside out 然后把单元flip一下。

taozhui

有时候可能是节点编号出了问题，重新renumber一下，基本可以搞定

apprent

在
MSC.Marc Volume A: Theory and User Information
Chapter 11 Solution Procedures for Nonlinear Systems Considerations for Nonlinear Analysis
还提到了这么一点……似乎是跟step size有关么，但是具体是什么意思还是看不明白

Selecting Load Increment Size
Selecting a proper load step increment is an important aspect of a nonlinear solution
scheme. Large steps often lead to many recycles per increment and, if the step is too
large, it can lead to inaccuracies and nonconvergence. On the other hand, using too
small steps is inefficient.

Fixed Load Incrementation
When a fixed load stepping scheme is used, it is important to select an appropriate
load step size that captures the loading history and allows for convergence within a
reasonable number of recycles. For complex load histories, it is necessary to prescribe
the loading through time tables while setting up the run.
For fixed stepping, there is an option to have the load step automatically cut back in
case of failure to obtain convergence. When an increment diverges, the intermediate
deformations after each recycle can show large fluctuations and the final cause of
program exit can be any of the following: maximum number of recycles reached (exit
3002), elements going inside out (exit 1005 or 1009) or, in a contact analysis, nodes
sliding off a rigid contact body (exit 2400), and nodes not being projected properly
onto 3-D NURBS (exit 2401).