Notch Strain Analysis of Cruciform Welded Joint using Nonlinear Kinematic Hardening Model

摘要: Several fatigue damages have recently been reported which cannot be resolved in the context of existing design procedure, and they are suspected to cracks induced by low cycle mechanism. To tackle problem, a series material tests together with carried out, elasto-plastic notch strain analysis using nonlinear kinematic hardening model has performed. The cyclic stress-strain curves obtained was calibrated based on data. Also, test non-load-carrying cruciform fillet welded joint performed regime. Then, analyses out find precise behavior at root joint. variation property from base metal via HAZ up weld taken into account spatial property. Then detail subjected repeated loading investigated further through comparison prediction Neuber`s rule. calibration commercial FE program ABAQUS.