This paper investigates the dynamic response of the transport unit of beer bottle‐turnover boxes under the random vibration excitation by using the experiments and finite element (FE) analysis and provides an analytical method of random vibration for a contact nonlinear transport unit with a jumping body through a case study. The acceleration power spectral density (PSD) of the bottle in a single‐layer transport unit and in a bottom layer of a two‐layer transport unit is unimodal; however, that on a top layer of the two‐layer transport unit is basically bimodal. The acceleration response of the bottle in the bottom layer is mainly controlled by a peak frequency and the corresponding excitation PSD near the peak frequency and that on the top layer by two peak frequencies and the corresponding excitation PSDs. The critical stress is located at the bottom and shoulder for the bottle and in the reinforcement area of the bottom plate or at the side‐stiffening plate for the turnover box. A different shape of an excitation spectrum results in a large difference in stress response. The FE results are basically in agreement with the experiments.

中文翻译：

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随机振动激励下啤酒瓶周转箱运输装置的有限元分析与实验研究

通过实验和有限元分析，研究了啤酒瓶周转箱运输单元在随机振动激励下的动力响应，并为带有跳跃体的接触式非线性运输单元提供了随机振动的分析方法。通过案例研究。单层运输单元和两层运输单元的底层中瓶子的加速功率谱密度（PSD）是单峰的；但是，两层运输单元的顶层基本上是双峰的。瓶子在底层的加速度响应主要由峰值频率和接近峰值频率的相应激励PSD控制，而在顶层的加速度响应由两个峰值频率和相应的激励PSD控制。临界应力位于瓶子的底部和肩部，位于底板的加固区域，或者位于周转箱的侧面加劲板。激发光谱的不同形状导致应力响应差异很大。有限元结果与实验基本吻合。