不知哪位做过组合楼板的分析吗?本人学习aba不久,最近用aba分析一闭口型-压型钢板混凝土组合楼板,一直不收敛,感觉问题很多,有下列问题想请教各位:
1、混凝土和钢板的接触如何定义?(我只定义了切向摩擦和法向的“硬接触”)
2、混凝土和钢板网格的密度该怎么控制?(没什么经验,不知道这个对收敛有怎样的影响)
出现得警告信息主要如下:
Boundary conditions are specified on inactive dof of 3 nodes. The nodes have been identified in node set WarnNodeBCInactiveDof.
The system matrix has 9262 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 1378 points
The strain increment is so large that the program will not attempt the plasticity calculation at 642 points
The plasticity/creep/connector friction algorithm did not converge at 172 points
恳请各位给些指点!谢谢!