摘要
弹性力学是许多工程专业的必修课程之一,尽管弹性力学业已成为一门系统、完整且严密的学科,然而在弹性力学的教学中仍会遇到一些困惑与问题,这几个问题包括:圣维南原理的思考、一个练习题中出现的应力状态悖论、半无限体位移解答为何可用于两个球面体的接触问题以及应力强度与应变强度定义的说明。本文提出了作者的观点与看法,供讲授与学习弹性力学的师生们参考。
Elasticity is one of the required courses for many engineering majors. Although elasticity has become a systematic, complete and rigorous discipline, there are still some puzzles and problems in the teaching of elasticity. The problems include 1) Reflections on Saint Venant’s principle;2) The paradox of stress state in an exercise;3) Why can the displacement solution of semi-infinite body be used to the contact problem of two spheres? 4) The definition of “stress intensity” and “strain intensity”. The ideas and views put forward in this paper can be used as a reference for teachers and students who teach and learn elasticity.
出处
《教育进展》
2022年第11期4781-4785,共5页
Advances in Education
