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Experimental and numerical investigation of Mode-I & Mode-II fatigue crack growth in unidirectional composites using XIGA-CZM approach
被引:15
|作者:
Kaushik, Vikas
[1
]
Ghosh, Anup
[1
]
机构:
[1] Indian Inst Technol Kharagpur, Aerosp Engn Dept, Kharagpur 721302, W Bengal, India
关键词:
Fibre bridging effect;
Cohesive zone modelling (CZM);
Fatigue crack growth;
Extended Isogeometric Analysis (XIGA);
Fractography;
DELAMINATION PROPAGATION;
CARBON/EPOXY COMPOSITE;
ISOGEOMETRIC ANALYSIS;
DRIVEN DELAMINATION;
SIMULATION METHOD;
FRACTURE;
METHODOLOGY;
PREDICTION;
ELEMENTS;
D O I:
10.1016/j.ijfatigue.2019.105461
中图分类号:
TH [机械、仪表工业];
学科分类号:
0802 ;
摘要:
This article presents an investigation of interlaminar fatigue crack growth in unidirectional (AS4/914) composites. Influence of fibre bridging on Mode-I interfacial fatigue properties is investigated under increased loading displacement and constant R-ratio. Significant shift is Paris law resistance curves represents the influence of fibre bridging in DCB specimen. Mode-II fatigue tests are carried out on precracked ENF specimens. A new set of interfacial fatigue properties are generated and incorporated into numerical formulation. Numerical simulations are carried out with combined framework of XIGA-CZM. Numerical prediction of crack propagation shows good agreement with the experimental results. Fractography is carried out using SEM.
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页数:12
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