几种等截面压杆计算长度研究

Research on the calculate length of prismatic compression ber

运用小变形弹性稳定理论,对几种压杆的计算模型进行分析,导出相应的稳定方程。利用Matlab求解出稳定方程的数值解,在此基础上拟合公式并对比分析计算长度系数的数值解与多项式等拟合值,通过对相应临界荷载的对比分析,认为多项式等拟合的结果精度较高,便于工程人员应用。

Based on the small linear elastic stability theory, the stability equation is established by analyzing the mechanical calculating model of a few kinds of columns. Solving stability equation by Matlab, so that, appropriate calculate length factors are given and compared with the calculate length factors of the columns base on the trigonometric formula. Analyzing and comparing the relevant critical loads, the calculate length factors of the columns base on the trigonometric formula is very perfect, besides, it is for the engineers＇ convenience.