Numerical modeling

Friction stir welding

FSW of Aluminum with PP : Joining different parts that too made of different materials is one of the essential steps while designing/engineering of materials. Presently, the energy-efficient low-weight automotive and aerospace components consist of many classes of materials, such as metals, polymers, ceramics, etc. Efficient and reliable joining of such materials of varied nature is a daunting task. We have demonstrated, for the first time, joining of a metal (aluminum) and a polymer (Polypropylene, pp) using mechanical friction.

Modeling and Simulation of advanced manufacturing processes

Modeling and Simulation of advanced manufacturing processes

Heat transfer modeling of dissimilar FSW of Al 6061/AZ31 using experimentally measured thermo-physical properties

A heat transfer numerical model is developed for friction stir welding of dissimilar materials Al 6061 and AZ31 alloy. Thermo-physical properties were experimentally determined for the stir zone and compared with the base alloys. Experimentally …

Numerical model for prediction of tool wear and worn-out pin profile during friction stir welding

Understanding tool wear during friction stir welding (FSW) is important for joining of high melting point metallic (HMPM) materials. Heat transfer and material flow based models developed in past have improved understanding of the FSW process. …

Quantitative wear analysis of H13 steel tool during friction stir welding of Cu-0.8%Cr-0.1%Zr alloy

Joining of high strength materials using friction stir welding (FSW) is difficult due to severe tool wear and change in the shape/size of the tool. However, quantitative understanding of tool wear during FSW of high melting point metallic materials …

A framework for shear driven dissolution of thermally stable particles during friction stir welding and processing

A framework is proposed to explain the dissolution and fragmentation of particles during friction stir welding and processing. Two major mechanisms dissolve the particle during the process: (i) thermally activated diffusion, and (ii) dislocation and …