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所属单位：航空学院

发表刊物：JOURNAL OF REINFORCED PLASTICS AND COMPOSITES

关键字：Finite element analysis bolted joints damage propagation explicit solver

摘要：A three-dimensional explicit finite element method was presented to investigate the bearing failure of single- and double-shear composite bolted joints. To predict the various failure modes of composite laminates, three-dimensional solid elements accompanied by mixed-mode failure criteria considering nonlinear shear behavior were employed in the model. A linear damage propagation law based on the fracture energy and the characteristic length was adopted to alleviate the mesh dependency. In addition, reduced integration elements were used in the models of single- and double-shear joints to avoid the overstiffness. The simulated models were implemented in the Abaqus/Explicit solver with a user-defined material subroutine. The numerical analysis run successfully without any convergence issues. The predictions of mechanical behavior agreed well with the experimental results, with typical damages in the laminates including matrix crack and fiber failure. The effect of secondary bending in the single-shear bolted joint was also analyzed in the explicit modeling.

ISSN号：0731-6844

是否译文：否

发表时间：2018-07-01

合写作者：Lu, Fangzhou,Cai, Deng'an,Tang, Ju,Li, Wenlong,Deng, Jian

通讯作者：周光明