工程力学课程中进行受力分析教学的几个要点

Some Key Points in the Force Analysis Course Teaching of Engineering Mechanics

工程力学课程中，对物体进行正确的受力分析是学生学好工程力学的第一步。在受力分析教学中，教师讲清几个要点——力、约束、约束反力的内在联系、“二力杆件”和固定铰链约束的特殊关系与作用力与反作用力公理，以及三力平衡汇交原理，能够帮助学生基本掌握受力分析的方法，为以后的学习和应用打下牢固的基础。

In the course teaching of engineering mechanics, the first step of learning Engineering Mechanics better is making correct force analyses on objects. In the force analysis teaching, the teachers should clarify the following key points： forces, intra--relation between constraint and constraint reaction, the special relation between the two--force bar and fixed hinge constraint, action and reaction principles, and the three--force balanced interaction principle. These points will help students basically master the ways of making force analyses and lay solid foundation for their future learning and application.