从荷载与内力微分关系讲解谈结构力学的教学

Discussion of structural mechanics teaching from the teaching of differential relation between load and internal force

以荷载与内力微分关系讲解为例,介绍了结构力学拓展式教学的运用.首先讲解荷载与内力微分关系,用课堂作业进行巩固;然后对课堂知识进行深化,介绍考虑分布力偶作用的荷载与内力微分关系;最后介绍利用荷载与内力微分关系计算结构位移的方法.拓展式教学可以将孤立的知识点串点成线,激发学生兴趣,启发学生思维,开拓学生思路,是一种切实有效提高学生能力的教学方法.

This differential relation between load and internal force is chosen as an example to illustrate the extensive teaching of structural mechanics. First, the differential relation between load and internal force is explained, and the classroom work is used to consolidate the students＇ comprehension. Then the classroom knowledge is deepen, the differential relation between load and internal force is introduced which considers the affect of distribution couple. Finally, a method to calculate the structural displacement is introduced using the differential relation between load and internal force. The extensive teaching can establish connections with isolated knowledge points, stimulate the students＇ interest, inspire students thinking, and develop students thinking, therefore it is a practical and effective teaching method to improve students ability.