摘要
力矩、力偶、力偶矩是理论力学中重要的基本概念,但是,在理论力学实践教学中发现这三个量很容易混淆,而且这三个量的定义及性质经常张冠李戴,所以,我们基于已有的教学经验及资源,总结归纳并详细讨论力矩、力偶及力偶矩的定义、性质及其应用,对教师实践教学及学生课外阅读起到辅助理解的作用。另外,在介绍这一部分的过程中,会涉及力的分量和力的投影这一组概念,在实践教学中发现学生对这两个概念也经常混淆,所以我们详细讨论两者之间的区别及联系。最后,在讨论这一部分内容时,这些概念名词本身蕴含着课堂思政,力矩和力偶是人类发现的两个重要的力学量,与其相关的有一些科学家和历史故事,这些内容看似与传统理论力学教学无关,但是,这些课外知识是直接的课堂思政,不仅可以提高学生学习兴趣,而且可以活跃课堂气氛。
Moment of force,couple and moment of couple are the fundamental concepts in Theoretical Mechanics.However,these concepts are often confused by many students when we teach this course.Thus,based on our teaching experiences and teaching references we summarize the definitions,properties and applications of these variables in order to give a reference to teachers and students.In additional,we will also compare another pair of concepts which are components of a force and projections of a force respectively.Finally,we will discuss about ideological and political theories teaching elements in this part.We have noticed there are many interesting stories related to these fundamental concepts,and these scientists stories can definitely promote the atmosphere of the class.
作者
贾悦
李春
JIA Yue(School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an 710129,China)
出处
《西南交通大学学报（社会科学版）》
2023年第S02期237-243,共7页
Journal of Southwest Jiaotong University(Social Sciences)
基金
西北工业大学理论力学课程研究教改项目
关键词
理论力学
力矩
力偶
力偶矩
课堂思政
Theoretical Mechanics
Moment of Force
Couple
Moment of Couple
Ideological and Political Theories Teaching Elements
作者简介
贾悦,(1986-),男,陕西,工程力学系,副教授,博士,主要从事等几何分析方法研究及理论力学教学。E-mail:yuejia@nwpu.edu.cn;通讯作者:李春(1979-),男,陕西,工程力学系,教授,博士,主要从事微纳米物理力学及理论力学教学。E-mail:lichun@nwpu.edu.cn。
