多层UV形瓦楞纸板的准静态轴向压溃模型研究

Modelling for Multi-layer UV-shaped Corrugated board under Quasi-static Axial Crushing

目的对多层UV型瓦楞纸板轴向压溃后的变形机理和抗压性能进行探究,以助于多层瓦楞纸箱和缓冲包装的设计。方法采用理论分析和试验研究相结合的方式,对UV形多层瓦楞纸板轴向压溃后的平台应力进行理论建模和准静态试验研究。结果在UV形瓦楞生产工艺的基础上,假设楞纸与相邻层之间的相互作用为面黏合;提出了一种新的折叠元件以及波纹芯的3种变形模式;此外,分别提出了五层瓦楞纸板和七层瓦楞纸板平台应力理论模型;多层瓦楞纸板平台应力的理论预测结果与试验结果吻合良好。结论所提出的多层UV形瓦楞纸板理论模型是有效的,这将有助于波纹结构刚度设计和参数选择,以满足不同的强度要求。

The work aims to study the deformation mechanism and compression resistance of multi-layer UV-shaped corrugated board under axial crushing to promote the design of multi-layer corrugated case and cushion packaging.The theoretical analysis was combined with experimental study.The theoretical modeling and quasi-static experimental study of the platform stress after axial crushing of multilayer UV-shaped corrugated board were carried out.Based on the pro-duction process of UV-shaped corrugated board,a physical surface bonding was assumed to represent the interaction be-tween the core liner and the outside liner;then,a new folding element and three folding modes of the corrugated core were proposed based on experimental phenomena.Moreover,a platform stress model of five-layer and seven-layer corru-gated boards was proposed.It was found that the platform stress predicted by the developed model compared well with the experimental results.It can be concluded that the proposed model is effective and helpful for stiffness design and para-meters selection of corrugated structures to meet different strength requirements.