预压缩对蜂窝纸板能量吸收的影响

The Effect of Pre-compression on the Energy Absorption of Honeycomb Cardboard

目的探究相同温湿度环境条件下,不同程度的预压缩对不同型号蜂窝纸板缓冲性能的影响。方法利用电子材料试验机对材料进行压缩,进而通过Matlab软件绘制出应力-应变曲线、静态缓冲系数曲线以及能量吸收曲线。结果预压缩限制在线弹性阶段,对蜂窝纸板各项性能无明显影响;当预压缩进入弹塑性阶段,蜂窝纸板的各项性能产生较为明显的下降;当预压缩进入塑性坍塌阶段,蜂窝纸板的各项性能显著下降,甚至丧失缓冲特性。结论随着预压缩程度的增加,蜂窝纸板静态压缩性能、静态缓冲性能及能量吸收性能都会降低。

The work aims to study the effects of different levels of pre-compression on the cushioning performance of different types of honeycomb cardboards under the same temperature and humidity.The electronic material testing machine was used to compress the materials.Then, the stress-strain curve, static cushioning coefficient curve and energy absorption curve were drawn with Matlab software.The pre-compression limited the online elastic stages and it had no significant impact on all the performances of honeycomb cardboard.When the pre-compression entered the elastic-plastic stage, all the performances of honeycomb cardboard were quite obviously decreased.When the pre-compression entered the plastic collapse stage, all the performances of honeycomb cardboard were significantly decreased and even its cushioning performance was lost.With the increase in the pre-compression level, the static compression performance, static cushioning performance and energy absorption of honeycomb cardboard will be reduced accordingly.