Fastener fatigue fracture analysis and life prediction of composite connection structure

Jingchao Wei; Su Cao; Tianjiao Qu; Linan Cheng; Xiangming Chen

doi:10.1117/12.2685962

28 July 2023 Fastener fatigue fracture analysis and life prediction of composite connection structure

Jingchao Wei, Su Cao, Tianjiao Qu, Linan Cheng, Xiangming Chen

Proceedings Volume 12756, 3rd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2023); 127564J (2023) https://doi.org/10.1117/12.2685962
Event: 2023 3rd International Conference on Applied Mathematics, Modelling and Intelligent Computing (CAMMIC 2023), 2023, Tangshan, China

Abstract

According to the two failure mechanisms of fatigue fracture of fasteners, the fatigue damage evolution equation of microcrack initiation and propagation of fasteners is proposed, and the crack initiation life and crack propagation life models are deduced. After superposition, the fatigue model of fastener fracture failure is obtained. Based on the fatigue test results, two widely used fatigue life models (exponential and power functions) are compared. The results show that the exponential type and power function type only fit the test data without considering the different failure modes of the structure. Based on the failure mechanism, the fitting results of the model are in good agreement with the experimental results, and have great reference value in the design of fatigue structure.

Citation Download Citation

Jingchao Wei, Su Cao, Tianjiao Qu, Linan Cheng, and Xiangming Chen "Fastener fatigue fracture analysis and life prediction of composite connection structure", Proc. SPIE 12756, 3rd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2023), 127564J (28 July 2023); https://doi.org/10.1117/12.2685962

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