结构矩阵分析中的斜杆刚架计算

Computation of Rigid Frame Containing Bevel Shaft in Structural Matrix Analysis

平面杆系结构分析中为简化计算,常使用一些计算假定.当用矩阵位移法分析平面刚架时,若遇到忽略杆件的轴向变形的斜杆刚架时,在一些结构力学教材或相关论文中,对其计算特点往往阐述不清,有的甚至存在一些概念性错误.本文分析了一些典型问题,提出了在结构矩阵位移法教学中应注意的问题和建议.

In the analysis of planar shaft system, some mechanical assumptions are usually used to simplify computation. When analyzing the rigid frame containing bevel shaft, the axial deformation is usually neglected. But lack of clarity and even conceptional mistakes can often be found in some structural mechanics text books and science papers. Some typical problems are presented in this paper. The author suggests that some points must be considered in the teaching of the matrix displacement method.