摘要
讨论了实现三维编织复合材料细观结构与宏观响应直接相关连的计算方法——细观单胞元法。该方法采用细观结构单胞作为离散单元对三维编织复合材料制件进行宏观网格剖分,在细观结构分析的基础上,将微结构上的物理量转换为细观单胞元的宏观节点变量,建立了细观单胞元刚度矩阵的求解方法。数值结果表明,该方法能反映细观结构参数的变化对材料宏观物理量的影响。
A numerical method, cell-element method, which can be used to establish the relation between microstructure and macro-response in 3D braided composites is presented in this paper. Firstly, a 3-D braided composite structure is meshed by the unit cells, then based on the analysis of the micro-structure, the variables of the micro-structure are translated into the variables of macro-nodes, and the stiffness of the cell-element is formulated. The numerical results show that this method can feedback the response of macro-variables to any tiny change in the micro-structure.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第4期63-66,共4页
Acta Materiae Compositae Sinica
基金
天津市自然科学基金(013604411)
关键词
编织复合材料
有限元法
细观单胞元
Finite element method
Stiffness matrix
Tensile properties
