开孔纸蜂窝芯层的面外静态压缩特性  

Out-of-plane static compression of paper honeycomb core layer with hole

作　　者：赵俊霞 郭彦峰 王振 付云岗 王慧能 ZHAO Junxia;GUO Yanfeng;WANG Zhen;FU Yungang;WANG Huineng(Faculty of Printing,Packaging Engineering and Digital Media Technology,Xi'an University of Technology,710048 Xi'an,China;Xi'an Ren Sheng Feng Wo Zhi Pin Co.,Ltd.,710300 Xi'an,China)

机构地区：[1]西安理工大学印刷包装与数字媒体学院,西安710048 [2]西安仁盛蜂窝制品有限公司,西安710300

出　　处：《应用力学学报》2023年第1期189-198,共10页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金资助项目(No.11202128);西安市科技计划资助项目(No.2017080CG/RC043(XALG024));陕西省重点研发计划资助项目(No.2018GY-191)。

摘　　要：针对双层侧壁开孔的纸蜂窝芯层的面外静态压缩特性,通过试验分析无孔和开孔纸蜂窝芯层在面外压缩量为85%时的压缩变形过程,研究相对湿度和圆孔直径对其强度性能的影响。基于蜂窝结构的对称性,利用两种基本单元模型,将面外受载的蜂窝胞壁视为无孔和开孔简支弹性薄板,推导出弹性屈曲临界应力和塑性屈曲平台应力的预测公式,结果表明理论计算与试验结果具有良好的一致性。结合纸基材的正交各向异性和纸蜂窝芯层的面外压缩特性,建立无孔、开孔纸蜂窝的有限元模型,仿真模拟蜂窝胞壁在弹性和塑性屈曲阶段的弯折变形演化过程,与静态压缩试验中所观察到的变形过程是一致的。In view of the out-of-plane static compression characteristics of paper honeycomb core layer with hole on double-layer cell walls,the compression deformation processes of paper honeycomb core layer without and with hole when the compression amount is 85%are investigated by experiments,and the effects of relative humidity and pore diameter on its strength performance are studied.Based on the symmetry of honeycomb structure and using two element models,the honeycomb cell walls loaded along the out-of-plane direction are regarded as simply-supported elastic plate without and with hole.The prediction formulas of the critical stress of elastic buckling and plastic plateau stress are derived.The results show that analytical calculations are in good agreement with the experimental results.Combining the orthotropic properties of the paper sheet and the out-of-plane compressive feature of paper honeycomb core layer,the finite element models of paper honeycomb without and with hole are established.The simulation of the bending and folding deformation evolution processes for honeycomb cell walls during the elastic-plastic buckling stages is consistent with the deformation processes observed in the static compression experiment.

关 键 词：开孔纸蜂窝芯层 静态压缩 相对湿度 临界应力 平台应力 

分 类 号：TB484.1[一般工业技术—包装工程]