VERIFICATION OF JOHNSON-COOK MATERIAL MODEL CONSTANTS OF AA2024-T3 FOR USE IN FINITE ELEMENT SIMULATION OF FRICTION STIR WELDING AND ITS UTILIZATION IN SEVERE PLASTIC DEFORMATION PROCESS MODELLING

Sanjeev N K, Vinayak Malik, H. Suresh Hebbar

Abstract: Friction Stir Welding (FSW) is a solid state joining process which is gaining significance in many joining applications. The increased use of various commercial Finite Element (FE) packages are also aiding in widening the applicability of FSW by simulating the process for better understanding. However, reliability and accuracy of estimated results depend much on the selected modeling approach and governing equations. The principal equations that govern modeling of FSW are the material model and the friction model. This paper aims in discussing the influence of Johnson–Cook material model constants reported in literature on results obtained from FE simulations of FSW using ABAQUS. The current study also helps in extending the screened and identified constants of Johnson-Cook material model to processes undergoing severe plastic deformation.

Keywords: FE modeling, FSW, Coupled Eulerian Lagrangian, Johnson-Cook Material Model, ABAQUS

DOI: https://doi.org/10.15623/ijret.2014.0306017