Multi-scale friction modeling for manufacturing processes: The boundary layer regime


Hol, J. and Karupannasamy, D.K. and Meinders, V.T. (2012) Multi-scale friction modeling for manufacturing processes: The boundary layer regime. In: 5th International Conference of Tribology in Materials and Processing, 2012-06-04 - 2012-08-04, Notre Dame, Indiana (pp. 1 - 10 (cd)).

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Abstract:This paper presents a multi-scale friction model for largescale forming simulations. A friction framework has been developed including the effect of surface changes due to normal loading and straining the underlying bulk material. A fast and
efficient translation from micro to macro modeling, based on stochastic methods, is incorporated to reduce the computational effort. Adhesion and ploughing effects have been accounted for to characterize friction conditions on the micro scale. A discrete model has been adopted which accounts for the formation of contact patches ploughing through the contacting material. To simulate metal forming processes a coupling has been made with an implicit Finite Element code. Simulations on a typical metal formed product shows a distribution of friction values.
The modest increase in simulation time, compared to a standard Coulomb-based FE simulation, proves the numerical feasibility of the proposed method.
Item Type:Conference or Workshop Item
Copyright:© 2012 ASME
Engineering Technology (CTW)
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