4:15 PM - 4:30 PM
[11011-15-04] Fatigue life improvement of welded joint by controlled shape and application of fatigue life prediction method considering cyclic elasto-plasticity response. (Proceedings of Symposium on Applied Mechanics)
Keywords:Crack initiation life, Crack propagation life, Fatigue SS model
The present study focuses on the shape effect on fatigue crack initiation and propagation life of welded joints considering the cyclic plasticity behavior of weld heat-affected zone (HAZ) by considering a cyclic plasticity accumulation during fatigue loading, which is a main cause of crack initiation. Cyclic plasticity behaviour including cyclic hardening and softening together was investigated with an unconventional elasto-plasticity model called the Fatigue subloading surface model and extended to include both elastic boundary and cyclic damage concepts.