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在传统的结构力学力法教学中,无论是力法基本方程的建立还是方程中系数和自由项的求解,都要求在同一基本结构上进行.本文通过实例计算和比较,采用公式叠加原理分析了当M_p图与■_1图分别选自不同的基本结构时,力法基本方程的物理意义以及计算过程的科学意义.结果显示在力法计算中,基于不同的基本结构求解超静定问题,可简化力法的计算过程.用本文方法开展教学,有利于学生对力法的深入理解和掌握.
In the traditional teaching of structural mechanics, both the establishment of the basic equations of force and the solution of the coefficients and the free terms in the equations are all required to be carried out on the same basic structure.In this paper, through the example calculation and comparison, The physical meaning of the basic equations of force method and the scientific significance of the calculation process when the M_p map and the ■ _1 map are respectively selected from different basic structures show that in the method of force law, the solution of the indeterminate problem based on different basic structures Simplify the calculation of force method.Using this method to carry out teaching, is conducive to students in-depth understanding of the law and grasp.