成都大学学报（自然科学版）2024，Vol.43Issue(4)：399-405,411,8.DOI:10.3969/j.issn.1004-5422.2024.04.010
考虑橡胶质量的跌落冲击试验波形数值模拟
Numerical Simulation of Waveforms in Drop Shock Tests Considering Rubber Mass
杨佳霖 1毛勇建 1彭湃1
作者信息
- 1. 中国工程物理研究院总体工程研究所,四川 绵阳 621999
- 折叠
摘要
Abstract
The purpose of this article is to numerically simulate the half-sine shock wave generated by rub-ber in drop shock tests,to understand the problem that the wave formed in the case of large-mass rubber is far different from the wave formed by traditional theoretical calculation,and to guide the design and de-bugging of the drop shock tests.Considering the mass of rubber,a mechanical model of multi-degree-of-freedom spring-mass system was established,and the motion equations of the mechanical model were com-bined and solved.The acceleration response calculated by the model was verified by the actual test accel-eration response,and then the sensitivity analysis of related parameters was carried out.The acceleration response obtained by solving the mechanical model is basically agreeable with that measured in the actual test in terms of amplitude and pulse width,and the change trend is roughly consistent,which is more real-istic than that found in the wave formed by traditional theoretical calculation.The mechanical model of multi-degree-of-freedom spring-mass system can more realistically simulate the acceleration response generated by the large-mass rubber waveform generator,and can be used to design and debug drop shock tests.关键词
冲击试验/波形发生器/半正弦波/多自由度/弹簧质量系统Key words
shock test/waveform generator/half sine wave/multiple-degree-of-freedom/spring-mass system分类
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杨佳霖,毛勇建,彭湃..考虑橡胶质量的跌落冲击试验波形数值模拟[J].成都大学学报（自然科学版）,2024,43(4):399-405,411,8.
