Development of Fracture Model for Laser Screw Welding

Abstract

This paper describes development of the Laser Screw Welding (hereinafter LSW) fracture model and validation of the model with experimental results. It is an issue in vehicle development that fracture model of LSW which can be welded in short pitch and with large clearance allowance have not been developed with being strengthened safety requirements in recent years. Since unknown material is created by stirring various molten metals composing of plates in joining, LSW fractures in various modes. Therefore fracture model was estimated difficult to develop. A model was developed to simulate fracture mode bifurcations and was validated with experiment results.