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

发布时间：2018-07-17 03:55

【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 product packaging under four kinds of vibration grades and three restraint modes were studied experimentally. The response characteristics of product packaging under fixed restraint mode and the stress and deformation of carton and liner were further analyzed by finite element method. The results show that the acceleration response power spectrum of the product mainly depends on the excitation acceleration power spectrum in the resonance region, and the packaging plays the role of bandpass and amplification in the resonance region. With the enhancement of the restraint mode, the resonant frequency of the package increases, and the peak value of the resonance acceleration power spectrum in the fixed constraint mode is obviously higher than that in the unconstrained and elastic constraint mode. The resonance frequency and the acceleration power spectrum obtained by finite element method are in good agreement with the experimental results. The peak value of the product acceleration power spectrum is very sensitive to the damping coefficient of the system. The finite element method provides an effective method for the analysis and design of product packaging under the action of random vibration environment.
【作者单位】：暨南大学包装工程研究所;暨南大学产品包装与物流广东普通高校重点实验室;暨南大学珠海市产品包装与物流重点实验室;
【基金】：国家自然科学基金(50775100)
【分类号】：TB48;TB53

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