考虑易损件物品-EPE缓冲系统冲击响应分析

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摘要为研究易损件在发泡聚乙烯（EPE)缓冲作用下冲击响应，建立了二自由度非线性产品包装系统模型，分析了易损件与EPE粘弹性耦合后的跌落加速度特性，讨论了破损边界上方区域内衬垫面积、厚度及其比值对易损件加速度响应的影响。结果表明，满足约束条件的易损件的最大加速度响应与缓冲衬垫面积和厚度关系成条状特性。随着EPE缓冲衬垫面积与厚度增大，易损件加速度先减小后增大。易损件最大响应加速度与缓冲衬垫体积关系呈现“√”形状，最后引入系数表征缓冲衬垫的经济性和易损件安全性。

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	张炜1
	薛飞2
	卢富德1
	高德1

关键词 ：易损件, 跌落, EPE, 缓冲, 冲击

Abstract：In order to investigate the impact response of cushioning systems made of expanded polyethylene (EPE)and item with the critical component , a nonlinear packaging model with two degree of freedom containing a critical component is established, and solved by a numerical method given the constitutive relationship of EPE. The impact response in terms of acceleration histories of cushioning system is obtained, and the effects of area , height and their ratio on the acceleration distribution in view of damaged boundary is discussed. The numerical results show that the acceleration response of critical component is influenced appreciably by the above parameters. It is shown that the acceleration of a critical component appears a strip shape generated by both an area and a thickness of the cushion when it meet with the fragile requirements and the dimensions requirements. As the area and thickness of EPE cushion increase, the acceleration decreases firstly, and then increases. The relationship between the acceleration and the volume of an EPE cushion is like the symbol "√". At last, the parameter is introduced to the ratio between the cushion economy and the safety of a critical component.

收稿日期: 2014-01-27 出版日期: 2015-05-15

引用本文:

张炜1，薛飞2，卢富德1，高德1. 考虑易损件物品-EPE缓冲系统冲击响应分析[J]. 振动与冲击, 2015, 34(9): 116-119.
ZHANG Wei1,XUE Fei2, LU Fu-de1, GAO De1. Impact-response Analysis of the system made of a critical component and an EPE cushion . JOURNAL OF VIBRATION AND SHOCK, 2015, 34(9): 116-119.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I9/116

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