摘要
利用Matrix27单元,对节点半刚性问题进行了APDL二次开发。利用调整节点刚度程序,研究了节点刚度与特征值之间的曲线关系,并重点研究了节点刚度对单层网壳稳定性的影响。通过单层网壳中节点刚度的研究,得到了几点有益的结论,为该类结构的设计提供数据资料和依据。
ANSYS is powerful finite element analysis software. procedure based on APDL programming technique to solve the Using Matrix27 element in ANSYS, a fundamental problem of half rigidity of joints is presented. Then the model of a steel structural lattice shell is established. The forgoing program for adjusting joint rigidity is ap- plied, and the curve relation between joint stiffness and eigenvalue is presented. The influence of joint stiffness on structural stability is studied emphatically. Finally, some useful conclusions are obtained, which can be referred in the design of such kind of grid shells.
出处
《世界地震工程》
CSCD
北大核心
2007年第3期32-40,共9页
World Earthquake Engineering
基金
国家自然科学基金资助项目(50278005)
北京市科委科技奥运专项资助(Z000519104011)
关键词
二次开发
Matrix27单元
稳定性
节点刚度
半刚性
secondary development
Matrix27 element
stablility behavior
joint stiffness
half rigidity
