聚乙烯缓冲材料多自由度跌落包装系统优化设计

高 德; 卢富德

振动与冲击 ›› 2012, Vol. 31 ›› Issue (3) : 69-72.

PDF(1277 KB)
PDF(1277 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (3) : 69-72.
论文

聚乙烯缓冲材料多自由度跌落包装系统优化设计

  • 高 德1; 卢富德2
作者信息 +

MDOF packaging system cushioning optimization design of Polyethylene foam

  • GAO De1, LU FU-de2
Author information +
文章历史 +

摘要

在测试基础上,依据粘弹性力学理论,建立发泡聚乙烯缓冲材料动态非线性本构模型,并成功识别了模型参数;应用此模型在一定高度跌落冲击下,建立了多自由度包装系统动力学方程;依据物品响应加速度小于许用值及材料用量最小化两个原则,进行多自由度系统缓冲包装优化设计并获得最优解;基于最优解结构尺寸,测试了发泡聚乙烯缓冲系统的加速度响应值,数值算例及试验的结果表明理论值与试验值的平均相对误差都在0.8%以内。利用此设计方法可有效地避免欠包装和过度包装,克服了最大加速度-静应力曲线不能设计多自由度缓冲包装设计的弊端。

Abstract

Based on drop shock test, nonlinear dynamics constitutive relation of Polyethylene foam is established and the parameters in the formula are identified successfully; then the constitutive relation of the foam is used in the multi-DOF packaging system of Polyethylene foam, and the dynamics formula is constructed under the given height. Based on response acceleration of the items smaller than the allowable value and minimal material consumption of polyethylene, the object optimization function of the cushion package structure is determined. The optimization solutions of multi-DOF packaging cushion system are obtained by the optimization model; based on the optimization results, the response accelerations of the falling masses in the packaging system are tested. The numerical results in this paper show that the relative errors between measured and calculated values of the response accelerations are less than 0.8% so that the model can be used to directly designing cushioning packaging structure, and avoid excessive or less packaging. This method is effect because the maximum acceleration-static stress curves cannot be available in designing cushioning packaging. The methods and process can be meaningful to cushioning design, and also provide relevance for other cushion packaging material.

关键词

发泡聚乙烯 / 本构关系 / 缓冲包装设计 / 多自由度 / 跌落冲击

Key words

EPE / constitutive relation / cushioning packaging design / MDOF / drop impact

引用本文

导出引用
高 德; 卢富德. 聚乙烯缓冲材料多自由度跌落包装系统优化设计[J]. 振动与冲击, 2012, 31(3): 69-72
GAO De;LU FU-de. MDOF packaging system cushioning optimization design of Polyethylene foam[J]. Journal of Vibration and Shock, 2012, 31(3): 69-72

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