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双曲正切包装系统在半正弦脉冲作用下的冲击特性 总被引:4,自引:4,他引:0
研究双曲正切包装系统在半正弦脉冲作用下的冲击响应。结果表明:脉冲幅值uem、系数参数Fm及阻尼ξ对系统冲击谱和破损边界曲线有显著的影响,且该包装系统与立方型和正切型包装系统在冲击响应上有着本质的区别。 相似文献
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考虑易损件的正切型包装系统冲击破损边界曲面研究 总被引:6,自引:0,他引:6
以正切包装系统为例,研究考虑易损件的非线性包装系统在半正弦脉冲激励下的冲击特性,提出考虑易损件的产品包装系统冲击破损边界曲面新概念,讨论了频率比、脉冲激励幅值和系统参数对易损件破损边界的影响规律.结果表明,频率比、脉冲激励幅值和系统参数对易损件冲击破损边界影响显著.研究结论为产品包装设计提供科学依据. 相似文献
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矩形脉冲激励下正切型非线性包装系统的冲击响应 总被引:7,自引:4,他引:3
分析了正切型缓冲包装系统在矩形脉冲激励下的冲击响应,得到了冲击谱曲线和边界破损曲线,讨论了相关参数对冲击响应的影响 相似文献
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根据瓦楞纸板平压静态模型,建立了动力学方程.通过数值计算方法,研究瓦楞纸板在矩形波激励下的冲击响应,并讨论各参数对瓦楞纸板包装系统的冲击谱和破损边界的影响规律. 相似文献
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目的 得到矩形冲击下具有多个关键部件产品的破损边界,并分析破损边界在线性和非线性(正切型和双曲正切型)情况下的变化规律以及影响因素。方法 首先,使用集中质量法建立多自由度离散包装系统模型;然后,运用牛顿第二定律推导系统动力学方程,经无量纲处理后获得系统的无量纲动力学方程;最后,应用四阶龙格库塔法进行求解,获得系统的动力学响应,得到破损边界。结果 相较于线性包装材料,双曲正切型缓冲包装材料可以扩大包装件的非破损区,而正切型缓冲包装材料则相反,且影响程度与非线性参数成正比;在特定情况下,不同关键部件的破损边界曲线存在相交情况。结论 不同类型的冲击会导致不同关键部件的破损,实际物流过程中要考虑所有关键部件的保护。 相似文献
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双曲正切包装系统在矩形脉冲作用下的冲击特性 总被引:4,自引:4,他引:0
研究双曲正切包装系统在矩形脉冲作用下的冲击响应。结果表明:脉冲幅值llm,系统Fm及阻尼ζ对系统冲击谱和破损边界曲线有显著的影响,且该包装系统与立方型和正切型包装系统在冲击响应上有着本质的区别。 相似文献
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瓦楞纸箱系统设计软件的研究与开发 总被引:7,自引:5,他引:2
研究了在产品进行缓冲包装设计后,在已知产品缓冲包装后的尺寸、包装件的运输条件以及不同瓦楞纸板的强度参数的基础上进行瓦楞纸箱系统设计的理论,并进行软件的开发,目标是在输入已知条件后通过软件求得纸箱的型号、参数和结构尺寸. 相似文献
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This paper suggests a general approach for obtaining shock spectra and damage boundary curves for cushioning packaging systems. This approach can treat both linear and non‐linear cushioning systems such as cubic, tangent and hyperbolic tangent systems. Corresponding software has been developed for analysing different cushioning systems, and the shock spectra and the damage boundary curves are given for a tangent non‐linear cushioning system under the action of a rectangular, half‐sine, terminal‐peak saw‐tooth and initial‐peak saw‐tooth pulse, respectively. It is worth noting that the shock spectrum is affected not only by the damping parameter but also by the dimensionless pulse peak, and that both the damping parameter and the dimensionless fragility also influence the damage boundary curve. These are important features of non‐linear cushioning system. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
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This paper analyses the packaging system of a product as a two‐degrees‐of‐freedom system, one degree for the key component and the other for the main part of the product. The dropping damage boundary curve was developed based on the key component for linear and non‐linear packaging systems to predict product damage as a result of drop impacts. The dynamic models of two‐degrees‐of‐freedom dropping shock were obtained. For a linear packaging system, the dropping response of the key component was determined by the dimensionless dropping shock velocity, the frequency parameter ratio, the mass ratio and the damping parameters; for a non‐linear system, the system parameter was also used. The frequency parameter ratio of the packaging system and the dimensionless dropping shock velocity were selected as the basic evaluation quantities for the dropping damage of the key component. As an example, the dropping damage boundary curves based on the key component were given for linear and tangent packaging systems. The influence of related parameters such as the mass ratio, the system parameter and the damping parameters on the dropping damage boundary curve was investigated. To verify the theory, experiments were designed and completed. Experiment results for both linear and tangent packaging systems were consistent with the theory suggested in this paper. These results have important value not only for the design of cushioning packaging but also for the improvement of products. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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目的 在绿色包装设计的新要求下,改进传统塑料包装方案,以框架式灯具的安全运输为例,设计一种面向框架类产品的全瓦楞纸板的绿色缓冲包装.方法 以缓冲包装六步法为依据,利用平面材料立体化造型设计方法,设计全瓦楞纸板缓冲包装结构,并利用E和B型瓦楞纸板分别制作出2套结构尺寸相等的缓冲包装.根据ISTA-1A标准对2组包装件进行跌落试验,通过安装在灯具上的传感器测试的数据及包装件的变形,研究瓦楞板厚度对包装件缓冲性能的影响,综合评价包装件的缓冲性能.结果 对2套不同厚度的瓦楞纸板缓冲包装结构,分别进行一角、三棱、六面的跌落测试,得出了相应加速度-时间曲线和包装件变形图.结果 表明,跌落过程中灯具系统的最大加速度为684.17 m/s2,小于灯泡脆值(784 m/s2),并且灯架未变形,灯泡及配件均未损坏,B型瓦楞板制作缓冲包装结构在试验后相对于E型瓦楞板制作的变形更小.结论 2套全瓦楞缓冲包装具有良好的缓冲性能,厚度大的纸板具有更好的缓冲效果,能有效缓冲框架灯具在物流运输过程中所受到的冲击,适用于装卡在其他框架类产品的两端,具有较好的使用价值和应用前景. 相似文献
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Zhi‐Wei Wang 《Packaging Technology and Science》2002,15(3):115-120
As an extension of the classical damage boundary curve in the case of product dropping shock, the concept of a dropping damage boundary curve for linear and non‐linear packaging system to evaluate the dropping damage of product is developed in this paper. The dropping damage boundary curves are given for linear and hyperbolic tangent packaging systems with different damping. For a linear packaging system the dropping damage of a product is determined only by the natural frequency of the corresponding packaging system without damping and the dropping shock velocity of package except the system damping, and they compose the basic evaluation quantities of product dropping damage. For a non‐linear hyperbolic tangent packaging system, the system parameter and the dimensionless dropping shock velocity are two basic quantities in the evaluation of product dropping damage. It should be emphasized that the dimensionless dropping shock velocity is related not only to the dropping height of package box but also to the system parameter integration. This is the important feature differentiating a non‐linear packaging system from a linear one. The influence of system damping on the dropping damage boundary curves is also discussed. This concept and the results have important value in the design of cushioning packaging. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
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C楞瓦楞纸板动态缓冲模型及应用 总被引:18,自引:0,他引:18
利用万能试验机和跌落试验台分别得到C楞瓦楞纸板静态、动态应力-应变数据,建立相应的理论模型,并用最小二乘法识别模型中的参数。给出了瓦楞纸板在缓冲动力学中应用的例子,结果表明所建立的缓冲模型,可以直接用于缓冲包装设计,克服了用最大加速度-静应力曲线来设计缓冲包装需要大量实验和较多的数据的弊端。 相似文献
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目的研究C楞瓦楞纸板的非线性包装系统在运输过程中的跌落特性,建立非线性包装产品系统模型,并得到系统动力学方程。方法依据物品响应加速度小于许用值及材料用量最小化等2个原则,进行缓冲包装优化设计并获得最优解。结果所建立的缓冲模型,可以直接用于缓冲包装设计。结论克服了用最大加速度-静应力曲线来设计缓冲包装需要大量实验和较多数据的弊端,为其他缓冲材料在缓冲包装设计中提供一般方法。 相似文献