随机振动下产品包装件动态响应的实验研究和有限元分析

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (13) : 223-229.

论文

王志伟 ,2,3,林深伟1,2,3

作者信息 +

Experimental investigation and finite element analysis of dynamic response of packaged product in random vibration

WANG Zhiwei1,2,3，LIN Shenwei1,2,3

Author information +

文章历史 +

摘要

实验研究了产品包装件在四种振动等级、三种约束方式下的随机振动特性，采用有限元法进一步分析固定约束方式下产品包装件的响应特性以及纸箱和衬垫的应力和变形情况。研究结果表明：产品的加速度响应功率谱主要取决于共振区域的激励加速度功率谱，包装起到了在共振区域的带通和放大作用。随着约束方式的加强，产品包装件共振频率增大，固定约束方式下的共振加速度功率谱峰值明显大于无约束和弹性约束方式下的共振加速度功率谱峰值。有限元计算得到的共振频率和产品加速度功率谱与实验结果较好吻合，产品加速度功率谱峰值对系统阻尼系数十分敏感。有限元法为物流随机振动环境作用下产品包装件的分析与设计提供了有效手段。

Abstract

The random vibration characteristics of packaged product in four levels of vibrations and three kinds of constraints are experimentally investigated. The finite element method is applied to analysis the response of product packaging in the fixed constraint, as well as the stresses and strains of box and pad. The results indicate that the response acceleration power spectrum density (PSD) of product depends mainly on the excitation one in the resonance area, and that the packaging plays a bandpass and amplification effect. The resonance frequency of packaged product increases with the strengthening of constraint, and the resonance peak of acceleration PSD in the fixed constraint is obviously bigger than that in the unrestraint and elastic constraint. The resonance frequencies and acceleration PSDs of product obtained from the finite element method are in agreement with the experimental ones. The peak of acceleration PSD of product is sensitive to the damping coefficient of system. The finite element method provides an effective tool for the analysis and design of product packaging in random vibration in logistics.

导出引用

王志伟1,2,3,林深伟1,2,3. 随机振动下产品包装件动态响应的实验研究和有限元分析[J]. 振动与冲击, 2017, 36(13): 223-229

WANG Zhiwei1,2,3，LIN Shenwei1,2,3. Experimental investigation and finite element analysis of dynamic response of packaged product in random vibration[J]. Journal of Vibration and Shock, 2017, 36(13): 223-229

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