摘要
本文以三点符合于实际截面变化的任意ｍ次抛物线代替两点符合的整次幂抛物线，来描述变截面构件惯性矩的变化规律。并依据判别式导出直接求解幂指数的高精度近似公式，对解决实际计算的疑难，克服传统方法存在的较大误差，推广采用多系数折算惯性矩分析变截面结构的强度和刚度，提供了便利。
The article explains the variation law of the variable cross-sections metallic member’sinertial moment,with which a random selection of para-curve to the power m with conformingthree sections to the real sections variation replaces the paracurve to-the power some one integralwith conforming two sections to the sections.Then a very accurate approximate formula to solvedirectly power index is deduced according to the judging formula. It is convenient to solve prob-lems in the oractical calculation,to correct the more error in the traditional method,and recom-mend people to adopt the multiple-coefficient reduced inertial moment to analyse the strength andrigidity in the variable cross-sections metallic member.
出处
《太原重型机械学院学报》
1994年第3期232-237,共6页
Journal of Taiyuan Heavy Machinery Institute
