目的 旨在研究红酒瓶及绿色蜂窝纸板缓冲包装跌落状态下的加速度及应力情况,分析蜂窝纸板厚度对缓冲性能的影响。方法 运用ANSYS/LS-DYNA建立红酒瓶及蜂窝纸板缓冲包装的有限元模型,对无包装红酒瓶和水平、竖直、倾斜不同跌落姿态下的蜂窝纸纸板包装件分别进行跌落仿真模拟,得到应力及加速度数据。同时,对不同厚度蜂窝纸板包装进行跌落分析。结果 由跌落仿真结果可知,在无包装时,瓶身最大冲击主应力为35.11 MPa,超过玻璃强度。而当冲击加速度为1.97×105 g,超过红酒瓶脆值,瓶体碎裂。在有蜂窝纸板包装时,瓶身最大主应力下降为0.12~2.48 MPa,应力值均未超过材料强度,峰值加速度降为4.93~46.59 g,加速度均未超过材料红酒瓶脆值,不会发生损坏。随着蜂窝板纸芯高度减小,红酒瓶跌落冲击主应力和加速度都增加,当蜂窝纸芯高度为11.6 mm时,红酒瓶跌落冲击主应力为31.8 MPa,超过玻璃强度,加速度为14 800 g,超过红酒瓶脆值,红酒瓶发生损坏。结论 蜂窝板缓冲包装设计可有效保护红酒瓶,14.5 mm蜂窝芯高度为该工况下的合理厚度,可以在满足防护要求的同时,兼顾材料成本与缓冲效率。
Abstract
The work aims to investigate the acceleration and stress characteristics of red wine bottles with and without eco honeycomb paperboard cushioning packaging under drop conditions, and analyze the influence of honeycomb paperboard thickness on cushioning performance. A finite element model of red wine bottles and honeycomb paperboard cushioning packaging was established through ANSYS/LS-DYNA. Drop simulations were carried out for unpackaged bottles and packaged ones under horizontal, vertical and inclined postures respectively to get the stress and acceleration results, and also drop simulations with different honeycomb paperboard thicknesses were also carried out. Drop analysis results showed that for unpackaged wine bottles, the maximum impact principal stress was 35.11 MPa which exceeded the strength of glass, and the acceleration was 1.97×105 g which exceeded the allowable fragility value of wine bottle and causes bottle damage. When wrapped with honeycomb paperboard packaging, the maximum principal stress of the bottle dropped to 0.12 MPa-2.48 MPa which was less than the strength of the wine glass, and the peak acceleration decreased to 4.93g - 46.59g which was less than the fragility with no damage occurred. With the decrease of honeycomb paperboard thickness, both the impact principal stress and acceleration increased. When height decreased to 11.6 mm, the impact principal stress was 31.8 MPa larger than the strength of glass and the acceleration increased to 14 800 g, which exceeded the fragility causing the bottle damage. Honeycomb paperboard cushioning packaging can effectively protect red wine bottles. Under the working condition in this study, 14.5 mm is the optimal honeycomb paper wall height, which meets the protection requirements while balancing material cost and cushioning efficiency.
关键词
红酒包装 /
蜂窝纸板 /
绿色包装 /
跌落仿真
Key words
red wine packaging /
honeycomb paperboard /
eco packaging /
drop simulation
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基金
上海市高校选拔培养优秀青年教师科研专项（354103）
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