Optimization and lightweight design of fretting fatigue performance of riveting holes in fiber metal laminates

doi:10.19936/j.cnki.2096-8000.20220328.004

Abstract

Abstract: In order to improve the fretting fatigue performance of the riveted structure of FMLs, the Smith-Waston-Topper (SWT) model based on the critical plane method was constructed to predict the crack initiation location and life of a riveted hole. The effects of design variables such as plate width W/D, end distance E/D, preload P and friction coefficient f on the SWT fretting damage are analyzed. The research results show that the fatigue damage parameter is the largest at the contact edge of the rivet and the FML. As the plate width and end distance increase, SWT fatigue damage parameters decrease. The increase of preload and friction coefficient contributes to the reduction of SWT fatigue damage parameters and the increase of specific load. A four-factor three-level quadratic orthogonal combination test design is carried out, and the SWT fatigue damage parameter is reduced by 47% compared to that without optimization. Finally, given the critical SWT damage parameters, lightweight design is carried out according to factors such as weight and critical load, and a reasonable Glare laminate method is selected.

Key words: FML, rivet joint, fretting fatigue characteristics, life prediction, orthogonal test, composites

CLC Number:

TB332

ZENG Xin, WANG Xiao-xiao, PING Xue-cheng, GUO Qian, HUANG Qi-heng. Optimization and lightweight design of fretting fatigue performance of riveting holes in fiber metal laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(3): 29-37.

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