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弹性力学问题的有限元法,是弹性力学问题的一种近似解法。本讲介绍弹性力学平面问题的基本知识,作为下一讲弹性力学平面问题有限元法的准备。一、常用物理量的表示方法及弹性力学问题的提出弹性力学中常用的物理量有外力,应力、应变和位移,它们的记号和符号规定如下: 1.外力:作用在物体上的外力或荷载可以分为体力和面力。所谓体力,是分布
The finite element method of elastic mechanics problem is an approximate solution to the problem of elastic mechanics. This lecture presents the basics of elastic mechanics plane problems as a preparation for the finite element method of elasticity plane problems to be covered next. First, the commonly used method of physical quantities and elastic mechanics problems proposed Physical elasticity of elasticity commonly used physical quantities, stress, strain and displacement, their symbols and symbols are as follows: 1. External force: the role of the external forces or loads can be divided For physical and facial strength. The so-called physical strength is distribution