- 积分
- 73
- 注册时间
- 2003-1-6
- 仿真币
-
- 最后登录
- 1970-1-1
|
发表于 2013-3-22 10:13:18
|
显示全部楼层
来自 美国
I would suggest you do the following:
1. Check if you can get the area correctly. What I mean is that instead of getting K11, K12, K21, K22 you put the integrand to be 1. Then you are supposed to get a matrix whose entries are the area of the element. If you cannot get this, it means you have something wrong with the Jacobian stuff.
2. If you can get the area correct, then check if the control matrix is symmetric.
3. Check the diagonal terms of the control matrix, they are supposed to be positive.
4. Check if you apply boundary condition correctly. |
|