Finite element analysis and experimental investigation of beer bottle‐turnover boxes transport unit under random vibration excitation

Abstract

AbstractThis 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.