哈密瓜物流包装垂直和水平振动的建模分析与防护

Modeling analysis and protection study of vertical and horizontal vibrations in Hami melon logistics packages

目的:优化缓冲包装设计。方法:以哈密瓜及其包装为研究对象,对5层堆码包装进行扫频振动试验,测出各层包装在垂直和水平方向振动的固有频率、最大功率谱密度、峰值加速度,并建立最大功率谱密度、峰值加速度与堆码层关系模型。结果:越往上层的包装,其在垂直和水平方向振动的最大功率谱密度和峰值加速度越大;同一层包装在垂直方向上的最大功率谱密度和峰值加速度大于水平方向上的;最大功率谱密度和峰值加速度与堆码层存在极显著正相关。结论:进行缓冲包装优化设计时,越往上层的包装其缓冲性能设计要越好;相比于水平方向,垂直方向的缓冲性能需要更好;该回归模型能较准确预测各层包装的振动情况。

Objective:Optimized cushioning packaging.Methods:Taking Hami melon and its packaging as the research object,conducted sweep frequency vibration test on 5-layer stacked packaging,measured the natural frequency,maximum power Spectral density and peak acceleration of the vertical and horizontal vibration of each layer of packaging,and established the relational model between the maximum power spectral density,peak acceleration and stacking layer.Results:The higher the packaging,the larger the maximum power spectral density and peak acceleration in both vertical and horizontal directions.The maximum power spectral density and peak acceleration in the vertical direction of the same layer of packaging were greater than those in the horizontal direction.The maximum power spectral density and peak acceleration were strongly positively correlated with the stacking layers.Conclusion:When conducting buffer packaging optimization design,the higher level of packaging requires better buffering performance;compared to the horizontal direction,the vertical direction requires better buffering performance;This regression model can accurately predict the vibration situation of each layer of packaging.