Welding Process Simulation Model for Temperature and Residual Stress Analysis

Welding is widely used in all the fabrication processes for the development of structural components. An accurate and physically suitable heat flux simulation model is to be given as input for analysis of welding processes. The outcome of the heat input is structural deformation and residual stress formation. The temperature and residual stress modelling is one of the complex process which utilise the weld parameters and material properties at higher temperatures. A representation of heat flux model is developed using heat source with constant and uniformly applied condition. Present work is done with cylindrical heat flux model further a realistic model is possible by combining present with other heat flux models, such as Gaussian. The temperature distribution and stress analysis has been carried out with developed model by using the temperature dependent material properties for Stainless steel SS304. This work can be used for selecting process parameters for reducing structural distortion and residual stresses by simulation process. In this paper temperature and residual stresses are discussed.