重型夹芯纸板侧压强度数值仿真分析

目的对典型重型夹芯纸板结构的侧向抗压强度进行精确的对比分析,为合理应用夹芯纸板提供依据。方法利用有限元软件Ansys分别建立蜂窝纸板及AAB型重型瓦楞纸板大尺寸规格试样的数值模型,并基于屈曲分析准则对重型瓦楞纸板纵向及蜂窝纸板2个侧向抗压强度进行研究。结果在选材、用纸量及试样尺寸规格大小相同的情况下,蜂窝纸板2个方向的侧压强度均高于AAB型重型瓦楞纸板的边压强度。结论仿真分析对蜂窝纸板和AAB型重型瓦楞纸板的选材、材料用量及尺寸规格进行了严格控制,消除了重型瓦楞纸板和蜂窝纸板的材质、耗纸量、试样尺寸规格、试样加工工艺及环境条件等因素的变化对分析结果产生的影响。

Numerical Simulation on Edgewise Compressive Strength of Heavy Sandwich Fiberboard

The work aims to conduct contrastive analysis of the edgewise compressive strength of the typical heavy sandwich fiberboard and provide a basis for its reasonable application. Numerical models with big size specification for honeycomb fiberboard and AAB heavy corrugated fiberboard were respectively established by finite element software Ansys. Compressive strength of heavy corrugated fiberboard in longitudinal direction and that of honeycomb fiberboard in two side directions were studied based on buckling criteria. The compressive strength of honeycomb fiberboard in two side directions was higher than that of the AAB heavy corrugated fiberboard on the condition that material, consumption and sample size and shape were all the same. In conclusion, simulated analysis has strict control on material selection, material consumption and size specification of the both two fiberboards and has eliminated the effect of variation at material, consumption, sample size specification, processing technic and environmental conditions on the results of the analysis.