A Study of Load Carrying Capacity of cracked Weld Joint using Finite Element Analysis

Static Stress and dynamic modal analysis gives   the idea for strength of the joints.  Any failure in the analysis is catastrophic to the functioning of the structure/machine.  This can be eliminated by proper stress and dynamic analysis.  Cracks will happen in the welds after certain cycles of working. The present study is to find the effect of crack on load carrying capacity of the joint and its stress behaviour in the junction. The results shows parabolic reduction of strength with the propagation of crack which indicates failure propagation is more with increased cracking.  Also stress behaviour across the cross section also changes with the crack propagation and results shows maximum concentration at the bottom region which is totally different from the full contact problem