摘要
结构承受位于一定高度重物无初速度释放的冲击响应是材料力学动应力部分的主体教学内容,其结构形式的多样性,特别是结构单独承受冲击与缓冲组合结构承受冲击两种模式的差异,容易造成学生在规律理解上出现疑惑。本文通过几个经典例题剖析各组成部分的作用,结合基本公式的参数方次分析,为教学活动中解释相关问题提供参考。
It is the main teaching content of the dynamic response part in mechanics of materials that the structure is subjected to the drop impact of object without initial velocity.The diversity of structural forms,especially the difference between structure withstanding impact independently and with buffer structure,tends to cause confusion in conceptual understanding.This paper analyzes the function of each component through several classic examples,combined with the parameter analysis of the basic formula,to provide reference for explaining related problems in teaching activities.
作者
李敏
李依伦
陈伟民
LI Min;LI Yilun;CHEN Weimin(School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China;Paris-Saclay University,Paris 91190,France;Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;School of Engineering Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《力学与实践》
北大核心
2022年第4期935-940,共6页
Mechanics in Engineering
基金
中科院先导项目资助(XDA22000000)。
关键词
动载荷
冲击缓冲
合理设计
dynamic load
impact buffer
reasonable design
