聚氨酯弹性体隔板夹层结构的等效参数计算

发布时间：2018-06-19 03:44

本文选题：聚氨酯弹性体 + 夹层复合结构　；参考：《复合材料学报》2017年03期

【摘要】：针对聚氨酯弹性体的隔板夹层结构,阐述了多种不同的等效参数计算方法,并对等效参数进行计算。首先讨论和计算了不考虑结构剪切变形时的整体结构等效参数计算方法,将整体夹层结构等效为正交各向异性薄板,给出了考虑夹芯抗弯刚度的整体刚度系数表达式。其次,在考虑夹层结构夹芯存在剪切变形的情况下,推导了由分隔隔板和聚氨酯弹性体组成的夹芯胞元的等效弹性常数;最后,使用基于应变能密度等效分析的有限元方法对夹芯胞元等效弹性常数进行计算,并与理论分析结果进行对比,二者误差在10%以内。
[Abstract]:According to the partition sandwich structure of polyurethane elastomer, several kinds of calculation methods of equivalent parameters are expounded, and the equivalent parameters are calculated. In this paper, the calculation method of the equivalent parameters of the whole structure without considering the shear deformation of the structure is discussed and calculated, and the integral sandwich structure is equivalent to the orthotropic thin plate, and the expression of the integral stiffness coefficient considering the bending stiffness of the sandwich core is given. Secondly, considering the shear deformation of sandwich core, the equivalent elastic constant of sandwich cell composed of separator and polyurethane elastomer is derived. The finite element method based on the strain energy density equivalent analysis is used to calculate the equivalent elastic constant of the sandwich cell, and the results are compared with the theoretical analysis results. The error between the two methods is less than 10%.
【作者单位】：哈尔滨工程大学航天与建筑工程学院;沈阳发动机设计研究所强度设计室;
【基金】：国家自然科学基金(51409056) 黑龙江省自然科学基金(E2015047) 哈尔滨工程大学中央高校基本科研业务费专项基金项目(HEU20160202)
【分类号】：TB332

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