图算角变力矩法

Chart Calculation Angular Change Force Moment Method

力矩分配法,是工程界常用的手算结构的力学分析方法.以力矩表达结构结点角位移的量,称为角变力矩.以角变力矩为未知量,以计算图为对象利用力矩分配法概念求解超静定结构的方法,称为图算角变力矩法,即边看图边计算角变力矩的方法.图算角变力矩法,克服了力矩分配法直接待求量个数多、计算的渐近性和有截断误差的近似性等缺点,发扬了力矩分配法计算程式规范,省脑力、思路清晰等优点,成为一种直接精确的力学分析方法,为建立超静定结构普遍统一的力学分析方法奠定了基础.

The method of moment distribution is one kind of the mechanics analytical method with wide-ranging application in the engineering field.Angular change force moment is defined as the amount of the angular displacement of the structure joints expressed by force moment.Chart calculation angular change force moment method is defined as the method of solving the hyperstatic structure with the help of the concepts of the method of moment distribution.Its unknown amount is the angular change force moment and its object is the calculation chart.This is also the calculation while looking at the calculation chart.Chart calculation angular change force moment method is against the demerits such as the many waiting-for calculation amounts and the progressive calculation and the approximation with the error of truncation and so on in the method of moment distribution.Of course,it also externalized the merits such as the normalizing-calculation modality and the clear thought way and the reduced mind labour conveniently.Thus it has been one kind of the direct and accurate mechanics analytic method that has been the foundation of hyperstatic structure in order to build a common and unified mechanics analytic method.