颗粒自激式冲击-振动耦合力学试验方法及试验研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (3) : 227-234.

论文

李飞胤，马少杰，张合

作者信息 +

Particle self-excited impact-vibration coupled mechanical test method and test study

LI Feiyin, MA Shaojie, ZHANG He

Author information +

文章历史 +

摘要

针对一类冲击-振动耦合力学试验的技术需求，提出了一种短间隔连续冲击及颗粒体自激振动复合的冲击-振动耦合力学试验方法，并研制了试验系统样机。基于EDEM软件和VC++二次开发建立了试验系统自激振动结构的离散元耦合仿真模型，分析了颗粒体自激振动响应的一般规律，在此基础上根据应用需求优化选择自激振动加载方案。基于研制的力学试验系统样机和自激振动方案开展试验研究，通过分析对比连续冲击加载和冲击-振动耦合加载响应加速度时频域信号，验证了选择的颗粒体自激振动加载方案的实际应用效果，该试验系统可满足一些苛刻高动态连续冲击试验和连续冲击-多频振动耦合试验的需求，研究具有较好的科学意义和工程应用价值。

Abstract

Aiming at the technical requirements of shock-vibration coupling mechanical experiment, a new shock-vibration coupling mechanical experimental method of short interval and continuous shock and particle self-excited vibration is proposed, and a prototype of experimental system is designed. Based on the secondary development of EDEM software and VC++, the discrete element coupling simulation model of the experimental system is established, and the general law of particle self-excited vibration response is analyzed, on this basis, the self-excited vibration loading scheme is optimized according to the application requirement. The experimental research is carried out based on the developed mechanical experimental system and the self-excited vibration scheme, by comparing and analyzing the time domain and frequency domain signal of the acceleration response of the continuous shock loading and the shock-vibration coupling loading, the practical application effect of the selected particle self-excited vibration loading scheme is verified. The experimental system can meet the requirements of severe high dynamic and continuous shock mechanical experiments and continuous shock-multi vibration coupling mechanical experiments, the research has good scientific significance and engineering application value.

导出引用

李飞胤，马少杰，张合. 颗粒自激式冲击-振动耦合力学试验方法及试验研究[J]. 振动与冲击, 2023, 42(3): 227-234

LI Feiyin, MA Shaojie, ZHANG He. Particle self-excited impact-vibration coupled mechanical test method and test study[J]. Journal of Vibration and Shock, 2023, 42(3): 227-234

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