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针对颗粒增强复合材料,基于杂交应力元的基本原理,推导考虑塑性应变、热应变和蠕变应变的Voronoi单元.利用新单元模拟分析机械疲劳载荷和热疲劳载荷的相位关系及夹杂的拓扑结构对结构的热机疲劳迟滞回线影响.

参考文献

[1] GhoshS;MUKHOPADHYAY S N .Material Based Finite Element Analysis of Heterogeneous Media Involving Dirichlet Tessellations[J].Computer Methods in Applied Mechanics and Engineering,1993,104:211-247.
[2] GhoshS et al.Elastic-Plastic Analysis of Arbitrary Heteroge neous Materials with he Voronoi-Cell Finite-Element Method[J].Computer Methods in Applied Mechanics and Engineering,1995(121):373-409.
[3] Tong P;PIAN T H H .A variational principal and the convergence of a finite element method based on assumed stress dis tribution[J].International Journal of Solids and Structures,1969,5:463-472.
[4] Atluri S .On the hybrid stress finite element model for incremental analysis of large deflection problems[J].International Journal of Solids and Structures,1973,9:1177-1191.
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