427 有限要素法を用いた 3 次元織物複合材料の損傷解析

概要

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Fracture process of three dimensional woven composites was analyzed using the Finite Element Method. Special emphasis was put on the influences that microscopic damage gives to macroscopic property. There are three types of microscopic damages in the three dimensional woven composites : tow fracturing, transverse crack and delamination. In order to simulate these damages, the three dimensional woven composite was modeled by combination of three types of elements : brick elements, truss elements and cohesive elements. Truss elements express the rigidity in the fiber direction of tow. The rigidity of the truss element was dropped to zero when the tow was fractured. Brick elements express the property of matrix. Cohesive elements are introduced along the boundaries of the inner layers and inside the transverse plies to simulate the spontaneous initiation and propagation of transverse cracks and delaminations.
一般社団法人日本機械学会の論文
2003-03-13