基于ADAMS软件瓦楞纸板缓冲性能的动力学仿真研究

应用ADAMS软件针对瓦楞纸板缓冲包装，建立系统动力学分析模型，并在非线性数学模型的基础上，对系统中瓦楞纸板缓冲系统的刚度和阻尼行性模型进行分析、分析了系统中主要运动件在连续冲击载荷下的受力特性，通过实例系统的计算分析，为缓冲包装系统的设计提供了依据。     

EPS 泡沫与 C 楞瓦楞纸板串联系统的缓冲分析与应用

基于发泡聚苯乙烯(EPS)和瓦楞纸板的本构关系,建立了由物品与这 2 种材料组成内外包装系统的缓冲模型;进而对工程实例进行了优化设计,介绍了串联模型的具体应用。 研究表明,在缓冲工程设计中不应忽略外包装的"串联"缓冲作用,否则会导致过度包装。     

瓦楞纸板缓冲包装结构的缓冲性能研究

在分析瓦楞纸板特点的基础上，设计了四种瓦楞纸板缓冲结构，并对其进行测试，总结其缓冲性能，以探索代替泡沫塑料的可能性。     

液晶电视的瓦楞纸板缓冲结构设计

瓦楞纸板不仅无污染、可再生,且具有良好的缓冲性能,承压性能,将瓦楞纸板裁切、折叠、插接形成具有良好缓冲性能的结构,用来替代传统的缓冲材料对液晶电视进行缓冲包装,不仅可以起到保护产品的作用还具有廉价、容易回收和环保的特点.     

基于MATLAB/GUI缓冲包装动力学优化设计

基于缓冲材料宏观本构模型,建立不同缓冲材料组成的串联力学模型。介绍求解串联缓冲系统动力学响应的虚拟质量方法及包装结构优化设计方法。利用MATLAB/GUI编制用于缓冲系统结构设计的界面程序,并脱离MATLAB平台。为缓冲包装动力学设计提供直接方法。     

瓦楞纸板缓冲结构的缓冲性能影响因素研究

瓦楞纸板在缓冲包装中应用极为广泛,其结构对其缓冲性能有很大的影响。设计了内三角形、外三角形、正方形、正方形复合结构,通过静态压缩实验,绘制了其应力-应变曲线。分析比较了内外折叠情况、缓冲结构的角度、支座的形状以及斜撑等因素对缓冲性能的影响。研究表明,内三角结构的缓冲性能优于外三角结构;支座倾斜角度60°的结构具有较好缓冲性能;设计的缓冲结构中,最佳缓冲结构为正方形复合结构。研究结果对瓦楞纸板缓冲结构的设计及应用提供了参考。     

瓦楞纸板衬垫缓冲性能的研究

介绍了楞纸板衬垫垂直方向和平面方向的动态压缩特性。     

瓦楞纸板衬垫缓冲特性研究

简述了常用瓦楞纸板衬垫的结构形式，分析比较了几种典型衬垫的缓冲特性，研究瓦楞纸板的缓冲特性，推广使用瓦楞纸板衬垫，有利于环境保护，回收再生，降低成本。     

瓦楞纸板及其结构件缓冲性能的研究进展

论述了国内外对于瓦楞纸板力学性能、缓冲性能和瓦楞纸板结构件缓冲性能的研究进展,在此基础上提出了瓦楞纸板及其结构件缓冲性能研究的发展趋势。     

瓦楞纸板衬垫缓冲特性研究

简述了常用瓦楞纸板衬垫的结构形式；分析比较了几种典型衬垫的缓冲特性。研究瓦楞纸板的缓冲特性，推广使用瓦楞纸板衬垫，有利于环境保护，回收再生，降低成本。     

功能型双拱瓦楞纸板缓冲动力学模型及跌落失效评价

基于功能型双拱瓦楞纸板压缩力学变形特征,建立其压缩非线性模型.在此基础上建立其缓冲包装系统跌落动力学方程,进行无量纲化并求解,分析系统动力学响应特征,找到系统响应的关键控制变量,据此提出描述瓦楞包装系统跌落失效的评定方法,并分析了产品脆值与材料阻尼对系统跌落破损边界的影响.研究结论对指导功能型双拱瓦楞包装系统设计具有一...     

Enhancement of cushioning performance with paperboard crumple inserts

This paper introduces a novel approach to using multi‐layered corrugated paperboard to provide improved protection against severe mechanical shocks and drops. Conventionally, cushion design requires the determination of the maximum expected shock levels or drop heights as well as their probability of occurrence. These are usually determined from statistical analysis of original field measurements or published drop height distribution data. With this approach, it is acknowledged that the cushioning element will provide adequate protection for statistically likely events but not for extreme, statistically unusual, events. A multi‐layer cushioning system made entirely of corrugated paperboard, designed to extend the cushioning protection range to include these extreme events, has been investigated. The main feature of the cushion is the inclusion of a corrugated paperboard crumple element designed to provide the necessary energy absorption for high compression stress levels. The effect of the complex deceleration produced by the crumple element on the product is analysed by means of the shock response spectrum. Experiments have shown that the paperboard crumple insert dramatically extends the protection range of the cushioning system by generally lowering the shock response spectrum, thus extending the cushion curve static load range. This results in a significant increase in the allowable drop height for a limited number of extreme events. Although this approach may be extended to a combination of conventional cushioning materials, the benefits of providing product protection with recyclable paperboard material are significant. Copyright © 2005 John Wiley & Sons, Ltd.     

Experimental investigation into the cushioning properties of honeycomb paperboard

The cushioning properties of honeycomb paperboards are studied by means of experimental analysis. Experimental results indicate that the cushioning behaviour of paper honeycombs with and without liners are similar, but the cushioning capability is significantly larger for the material with liners. Experiment and theory show that the relative density of paper honeycomb core has a significant effect on the cushioning properties of honeycomb paperboards; however, the basis weight of the liner has only little effect. Experimental results also show that the energy absorption properties of multilayer honeycomb paperboards are not always higher than those of monolayer honeycomb paperboards, and that the height of honeycomb paperboard has an effect on its cushioning properties. These results can be used to characterize and improve the cushioning properties of honeycomb paperboard pads efficiently. Copyright © 2008 John Wiley & Sons, Ltd.     

聚乙烯缓冲材料多自由度跌落包装系统优化设计

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     

防振缓冲理论在纸箱包装系统设计中的应用

提出了防振缓冲纸箱包装系统的力学模型并分析了其规律和特性；介绍了防振理论在纸箱包装系统设计中的应用，为提高纸箱包装系统防振缓冲能力，减少包装破损损人提出了合理的设计方法和途径。     

缓冲包装设计中流通环境的可靠性

针对缓冲包装设计采用五步设计法，其依据带有经验性和盲目性，提出了应用概率与数理统计理论处理复杂流通环境中的随机过程的冲击和振动的一种方法，有助于提高包装设计、综合包装系统成本。     

Experimental investigation on bending fatigue failure of corrugated paperboard

A series of 3‐point bending fatigue tests were conducted to investigate the bending fatigue behaviour of flute type B and C corrugated paperboard samples under cyclic loading. The S‐N curve was obtained. The fatigue failure of corrugated paperboard may be described by both Basquin‐type and exponential‐type S‐N curves; however, the exponential‐type S‐N curve is more appropriate. The stiffness is gradually degraded with almost same energy dissipation in most stress cycles, but it decreases abruptly with the enlarged energy dissipation when the testing cycle is very close to the ultimate cycles of fatigue failure. The corrugated board deforms constantly under the action of cyclic loading, and no visible crack appears. The fatigue failure modes and mechanisms are same for the corrugated boards with B‐flute and C‐flute; however, the S‐N curve of corrugated board is closely related to the flute structure. The results obtained in this paper may be applied to the dynamic design and accelerated vibration test of stacked corrugated boxes.     

Compression and cushioning characteristics of moulded pulp packaging

Experiments have been carried out to determine the relationship between the geometry of a moulded pulp packaging and the resulting static and dynamic strength. The influence of the shape of the moulded pulp sample has been examined. The shapes were of rounded and squared geometry, with different draft angles, sample heights, volumetric density in order of the level of hotpressing and surface densities. Static strength was examined by compression test. The experimental results show that cylinders, cones and shapes with large roundings produce better compression strength than squared or rectangular products with small roundings. Dynamic strength was found using drop tests to obtain G curves for first impact of the test samples at different conditions. An equation to determine the maximum G value during the drop was found. The equation shows good correlation to the results achieved for small static loads (the left side of the G curves). C/e curves for the different geometries show that the minimum cushion factor attainable for the tested moulded pulp products is approximately 2.0. Copyright © 2000 John Wiley & Sons, Ltd.     

C楞瓦楞纸板动态缓冲模型及应用

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。     

疲劳振动效应对瓦楞纸板承载能力与缓冲性能的影响

瓦楞纸板作为产品运输包装的承载与缓冲基础材料,其使用过程中的性能保持性至关重要。运输振动将引起纸板疲劳破损,导致其相应性能的变化。对单瓦楞纸板进行加速度为0.5－2.0g、振动频率为20Hz的疲劳振动试验;进行瓦楞纸板的准静态压缩、跌落冲击试验,测定其承载能力与冲击加速度。结果表明,随着振动次数、振动强度的增加,纸板的承载能力、剩余屈服应力显著降低,缓冲性能下降。在此基础上,基于瓦楞纸板冲击试验数据,分析不同振动次数对瓦楞纸板的冲击最大加速度和缓冲系数的影响,获得了瓦楞纸板冲击最大加速度—静应力—振动次数、缓冲系数—最大应力—振动次数三维关系。研究表明瓦楞纸板存在疲劳破坏效应,研究结果为瓦楞纸板的疲劳缓冲包装设计提供技术依据