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Finite Thickness Effect on Thermo-Mechanical Properties of 3-D Orthogonal Interlocked Fabric Composite

机译:3-D正交互锁织物复合材料热机械性能有限厚度效应

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Composite structure is composed of a large amount of heterogeneous and periodic microstructure. In the analysis using homogenization method, the heterogeneous unit-cell model, for instance, is often considered to be periodic in three-dimension (x-, y- and z-directions). However, in reality, composite structure is very thin, especially in aerospace structure. The model should not be assumed to be repeated infinitely in three directions. In this regard, very thin composite laminates is modeled by relieving periodic boundary condition in thickness direction. This paper studies the influence of relieving boundary condition of unit-cell model of 3-D orthogonal interlocked fabric composite by using finite element modeling. This paper also deals with a review of modified homogenization method with two-dimension periodicity.
机译:复合结构由大量的异质和周期性微观结构组成。在使用均质化方法的分析中,异构单元单元模型通常被认为是三维(X-,Y和Z方向)的周期性。然而,实际上,复合结构非常薄,尤其是在航空航天结构中。不应假设模型不确定在三个方向上重复。在这方面,通过在厚度方向上释放周期边界条件来建模非常薄的复合层压板。本文研究了使用有限元模拟方法对三维正交互锁织物复合材料单元细胞模型的缓解边界条件的影响。本文还涉及具有二维周期性的修饰均质化方法。

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