摘要
本文给出一种二维矩形超级单元，用以分析平板网架结构，其做法是将大型平板网架结构离散成一系列矩形超级单元，考虑弯曲、剪切、挤压、拉压、翘曲等多种非经典变形效应，采用构件自由度向超级元自由度的转换把大型多构件问题的求解变为二维问题的求解，可大大减少未知量，又能保证精度，并可方便地与一般有限元软件连接。
This paper presents a two-dimensional rectangular super element for analyzing the platetype truss structure. The structure,being partitional into many rectangular super element,being considered to sustain bending,shearing,tension and compression,extrusion andwarp,is analyzed with the FEM,it makes the problem to solving the complex built-up platestructure with many member system is changed into the two-dimensional problem,there-fore,the number of the unknowing varies is decreased,and the accuracy of the proposedmethod is well.
关键词
有限元
平板
网架结构
建筑结构
super FEM
plate type truss structure
non-classical deformation effects
