Fatigue behaviour analysis of aluminium alloy riveted single-shear lap joints

Analysing the dynamic response, the fatigue failure process of aluminium alloy riveted single-shear lap joints is quantitatively described. Firstly, numerical analysis of hysteretic loops based on MATLAB is proposed, and cyclic relative displacement amplitude, stiffness and dissipated energy are calculated. Secondly, the service behaviour corresponding to the evolution of relative displacement amplitude and dissipated energy is analysed and verified by finite element simulation. Finally, based on the evolution of cyclic compression stiffness, the cycles corresponding to crack initiation, as well as slow and rapid propagation, are calculated and verified by observing crack growth propagation through interruption tests.

Automated summary

This study quantitatively describes the fatigue failure process of aluminium alloy riveted single-shear lap joints by analyzing the dynamic response. Firstly, a numerical analysis method based on MATLAB is proposed to calculate the cyclic relative displacement amplitude, stiffness, and dissipated energy. Secondly, the service behavior corresponding to the evolution of relative displacement amplitude and dissipated energy is analyzed and verified through finite element simulation. Finally, the cycles corresponding to crack initiation, slow and rapid propagation are calculated and verified by observing crack growth propagation through interruption tests based on the evolution of cyclic compression stiffness.