摘要
在索和膜结构几何非线性分析的基础上,推导了直接迭代法的基本方程,同时给出了索和膜结构采用直接迭代法进行初始形状确定的求解方法.依据提出的形状确定方法,编制了计算程序,给出了一个典型算例的找形计算结果.较之常规的非线性位移法,直接迭代法无需组装总体刚度矩阵,并且可由任意的初始非平衡态得到平衡态,可有效地应用于索和膜结构的初始形状确定.
<Abstrcat> Based on the geometrical nonlinear analysis of cable nets and membrane s, the basic equation of direct iterative method is derived and the solution pro cedure for form finding of cable nets and membranes is proposed. Computer progra m is realized according to this method and a typical numerical example is given. The direct iterative method is more simple and effective than usual nonlinear d isplacement method for form finding of cable nets and membrane structures becaus e it does not need to assemble global stiffness matrix, and equilibrium configur ation can be easily obtained from arbitrary initial configuration through this m ethod.
出处
《华中科技大学学报（城市科学版）》
CAS
2005年第2期86-89,共4页
Journal of Huazhong University of Science and Technology
关键词
索网
膜结构
形状确定
几何非线性
cable nets
membrane structures
form finding
geometric nonlinearity
