ANALYSIS OF STABILITY AND MECHANISM OF FRAMES WITH PARTIALLY RIGID CONNECTIONS
ANALYSIS OF STABILITY AND MECHANISM OF FRAMES WITH PARTIALLY RIGID CONNECTIONS
复制标题
部分刚性连接框架的稳定性及机理分析
DOI：
10.3130/aijs.78.791
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Y. Kanno
中科院分区：
文献类型：
--
作者：
S. Tsuda;M. Ohsaki;Shohei Kikugawa;Y. Kanno
提出了一种部分刚性连接框架的稳定性分析和机理分析方法。平衡方程是关于杆件端力的折减向量建立的，并为其分配了线性约束。通过对表示平衡方程和约束的矩阵进行奇异值分解，找出了自平衡力和失稳机构的模式。通过对人工比例加载条件的极限分析，可以找到运动不确定度较小的无限小机构。以矩形和六边形网格框架为例，验证了该方法的有效性。
A method is presented for stability analysis and finding mechanisms of frames with partially rigid connections. Equilibrium equations are formulated with respect to the reduced vector of member-end forces, for which linear constraints are assigned. The modes of self-equilibrium forces and unstable mechanisms are found using singular value decomposition of the matrix representing equilibrium equations and constraints. An infinitesimal mechanism with small degree of kinematic indeterminacy can be found using limit analysis for an artificial proportional loading condition. The effectiveness of proposed method is demonstrated through examples of frames with rectangular and hexagonal grids.