多面体夹芯结构弯曲刚度影响因素分析

Factors Affecting the Bending Stiffness of Polyhedron Sandwich Structure

针对多面体夹芯结构承受载荷冲击时存在性能不全等缺陷,利用有限元仿真研究胞元变换参数、厚度等因素对多面体夹芯结构弯曲刚度的影响及其变化规律。分析结果表明,胞元变换参数、厚度对夹芯结构抗弯特性具有不同程度的影响。一定范围内,相似变换参数越小,剪切变换参数越大,多面体夹芯结构弯曲刚度越大。此外,适当增加夹芯板厚度能够显著提高多面体夹芯结构弯曲刚度。研究成果可为工程中设计一种性能良好的新型多面体夹芯结构提供借鉴。

For the performance of polyhedron sandwich structure is not perfect when it bear load,the influence of cell parameters on the bending stiffness of polyhedron sandwich structure is studied by finite element simulation.The influence of cell transformation parameters,thickness and other factors on the bending stiffness and change rules are studied.The results show that cell transformation parameters and thickness have different effects on the bending properties of sandwich structures.In a certain range,the smaller the similarity transformation parameter and the larger the shear transformation parameter,the greater the bending rigidity of the polyhedron sandwich structure.The bending stiffness of polyhedron sandwich structure can be improved by increasing the thickness of sandwich panel.The research results provide guidance for the design of a new polyhedron sandwich structure with good performance in engineering.