Advances on Modelling of the Tool/Workpiece Interface during High Shear Processing
Understanding and prediction of physical phenomena in different scales at the same time that are taking place at the tool/workpiece interface during high shear processing is done in different ways combining the latest finite element (FE) and discrete element (DE) analysis technology. The high shear processing is observed during hot rolling of aluminium, when it produces a highly deformed subsurface layer; and also during friction stir welding (FSW), when it results in significant heat generation and flow. The FE analysis is used for macro-scale simulation while the DE method is applied to simulate meso-scale phenomena taking place in the thin, sometimes a few micron thicknesses, surface layer. Different FE models and numerical techniques combined with DE based transient dynamics approaches are discussed in this work.
Jian-Feng Nie and Allan Morton
M. Krzyzanowski and M. W. Rainforth, "Advances on Modelling of the Tool/Workpiece Interface during High Shear Processing ", Materials Science Forum, Vols. 654-656, pp. 1634-1637, 2010