Fatigue crack propagation behavior and life prediction of 2024-O aluminum alloy FSW joints
The crack propagation behavior of 2024-O high-profile aluminum alloy friction stir welding prefabricated cracks in the weld nugget region,heat-affected region and perpendicular to the weld direction is analyzed through experiments and the method based on FRANC 3D and ABAQUS co-simulation,and the life prediction was carried out.The results show that the simulation results of crack propagation path and crack propagation rate in three regions are in good agreement with the experimental results.The crack propagation life of prefabricated cracks in three regions from low to high is weld core region,heat affected region,perpendicular to the weld.The relative error between the life prediction results of three kinds of samples and the test results by FRANC 3D is about 5%,which verifies the accuracy and feasibility of the co-simulation method to simulate the crack propagation behavior and life prediction of high-distribution aluminum alloy friction stir welding in different regions of welded joints.
万方数据
维普
