具有转动包装系统的正切非线性模型冲击响应研究

Shock response of a nonlinear tangent packaging system with rotation

包装运输中,物品承受冲击下常常发生转动现象,针对此包装系统,建立具有正切非线性的缓冲模型及振动方程。在模型中,考虑了包装物品的转动,同时,充分考虑了各自由度之间的耦合。在此基础上,运用数值方法,获得在正弦半波脉冲冲击下的冲击响应谱曲面及破损边界曲面,分析了频率比、粘性阻尼系数、压缩极限比和环境特征参数对系统的响应影响;研究结果能为包装行业其它类型物品运输的缓冲设计提供有效参考。

During transportation of a packaging item,the item absorbing shocks often occurs rotation behavior.A tangent nonlinear cushion model and a vibration equation were established with the consideration of rotation of the packaging system and the coupling between its degrees of freedom.Then,numerical method was used,boundary surfaces of its shock response spectrum and damage boundary were obtained under a half-wave sine pulse shock condition.The effects of frequency ratios,viscous damping coefficients,compression limit ratios,and environmental feature parameters on the response of the packaging system were analyzed.The results provided an effective reference for designing other types of packaging items during their transportation.