Numerical and experimental investigation into failure of T700/bismaleimide composite T-joints under tensile loading

被引：34

作者：

Wu, Hai ^{[1
]}

Xiao, Jiayu ^{[1
]}

Xing, Suli ^{[1
]}

Wen, Siwei ^{[1
]}

Yang, Fubiao ^{[1
]}

Yang, Jinshui ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

COMPOSITE STRUCTURES | 2015年 / 130卷

关键词：

Carbon fiber reinforced polymer composites; Tsai-Wu failure criterion; Cohesive zone model; Failure mode; T-joints; Delamination; COHESIVE-ZONE MODELS; SPECIMENS; MECHANISMS; ELEMENT; GROWTH; DCB;

D O I：

10.1016/j.compstruct.2015.04.019

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A finite element model for a composite T-joint structure under tensile loading has been established to simulate and analyze failure mechanisms, carrying capacities, in-plane and interlaminar damage behaviors based on the Tsai-Wu failure criterion and a cohesive zone model. Strains on the stress-concentration zone of the T-joint structure during loading were measured to validate the FEM model. The results showed that the simulated results had a good agreement with that of the measurements. The carrying capacity of the composite T-joint is mainly determined by failure modes, which can be changed by reducing fillet-filling ratio in the fillet of the T-joint and initiation and propagation paths of delamination cracks between the fillet and the L-ribs. The maximum tensile load of the T-joint calculated by FEM methods was 1854N, while the experimental value was 1862N. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：63 / 74

页数：12

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