Finite volume methods applied to the computational modelling of welding phenomena

Abstract

This paper presents the computational modelling of welding phenomena within a versatile numerical framework. The framework embraces models from both the fields of Computational Fluid Dynamics (CFD) and Computational Solid Mechanics (CSM). With regard to the CFD modelling of the weld pool fluid dynamics, heat transfer and phase change, cell-centred Finite Volume (FV) methods are employed. Alternatively, novel vertex-based FV methods are employed with regard to the elasto-plastic deformation associated with the CSM. The FV methods are included within an integrated modelling framework, PHYSICA, which can be readily applied to unstructured meshes. The modelling techniques are validated against a variety of reference solutions.

Residual stress simulation in thin and thick-walled stainless steel pipe welds including pipe diameter effects

“…The numerical simulation of the process of welding can take place in two alternative ways [3]. Firstly, the complex fluid and thermo-dynamics local to the weld pool are modelled by looking at the weld pool and the heat-affected zone (HAZ).…”

Numerical modelling of thermal phenomena in Yb:YAG laser welding process

“…Differential equations describing thermal phenomena in the discussed welding process are numerically solved using projection method with finite volume method (FVM) [12].…”

Evaluation of induced residual stresses on AISI 1020 low carbon steel plate from experimental and FEM approach during TIG welding process

“…Mohamed et al [15] reported that the behaviour of crack initiation until the fracture phase of a given metal under multiaxial stress condition is quite different from that of uniaxial stress condition, but both stress condition eventually result in fatigue damage which occurs depending on the direction of principal stress induced during loading by a number of independent forces. Taylor et al [16] explain that the thermal transient simulation of welding process can occur in two ways namely; the complex fluid and thermo-dynamics local to the weld pool are modelled by closely observing possible changes in the weld pool and the Heat Affected Zone (HAZ).…”