力学与实践 ›› 2022, Vol. 44 ›› Issue (4): 935-940.DOI: 10.6052/1000-0879-22-019

• 教育研究 • 上一篇    下一篇

材料力学冲击问题中结构参数影响的讨论

李敏*, 李依伦, 陈伟民**,††()   

  1. *. 北京航空航天大学航空科学与工程学院,北京 100191
    †. 巴黎–萨克雷大学,巴黎 91190
    **. 中国科学院力学研究所,北京 100190
    ††. 中国科学院大学工程科学学院,北京 100049
  • 收稿日期:2022-01-10 出版日期:2022-08-08 发布日期:2022-08-17
  • 作者简介:E-mail: wmchen@imech.ac.cn
  • 基金资助:
    中科院先导项目资助(XDA22000000)。

DISCUSSION ON THE INFLUENCE OF STRUCTURAL PARAMETERS OF IMPACT PROBLEM IN MECHANICAL OF MATERIALS

LI Min*, LI Yilun, CHEN Weimin**,††()   

  1. *. 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
  • Received:2022-01-10 Online:2022-08-08 Published:2022-08-17

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。

关键词: 动载荷, 冲击缓冲, 合理设计

Abstract:

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.

Key words: dynamic load, impact buffer, reasonable design

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