变截面梁计算的计算机处理

Computer Processing of Variable Cross-section Beam

本文讨论了由圆柱形和圆锥形段组成的变截面筒支粱在扭矩、集中力、集中力偶和均布载荷等外载作用下的计算机处理问题.按梁的结构和受载情况对梁进行分段,建立了梁的扭矩、剪力、弯矩和变形的分段计算模型;多支承梁按力法建立补充方程,将中间支承反力作为外力实现静定化.此方法简单易行,计算量小,适合于计算机处理.用 BASICA 编制的程序,通用性强.

This paper deals with the computer processing of variable cross-section free beam under the action of loading,such as torque,concentrated load, moment load and uniform load.The beam consists of cylindrical and cone- shaped sections.The computing models for torque,shear,angular deflection and deflection are built according to the computing section-dividing upon the structure and loading of the beam when there are three bearings or more, build equations using force method to take surplus bearing reactions as load. The processing is simple,its BASICA program can be in common use.