期刊
COMPOSITE STRUCTURES
卷 116, 期 -, 页码 589-594出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2014.05.041
关键词
Energy release rate; Fracture mode partitioning; Laminated unidirectional composites; Mixed-mode fracture; Orthogonal pure modes
A powerful method for partitioning mixed-mode fractures on rigid interfaces in laminated unidirectional double cantilever beams (DCBs) is developed by taking 2D elasticity into consideration in a novel way. Pure modes based on 2D elasticity are obtained by introducing correction factors into the beam-theory-based mechanical conditions. These 2D-elasticity-based pure modes are then used to derive a 2D-elasticity-based partition theory for mixed-mode fractures. Excellent agreement is observed between the present partition theory and Suo and Hutchinson's partition theory (Suo and Hutchinson, 1990) [1]. Furthermore, the method that is developed in this work has a stronger capability for solving more complex mixed-mode partition problems, for example, in the bimaterial case (Sun and Hutchinson, 1990) W. (C) 2014 Elsevier Ltd. All rights reserved.
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