Publication Details

Numerical formulations and algorithms for solving contact problems in metal forming simulation

L. Fourment, J. L. Chenot, K. Mocellin
Journal:International Journal for Numerical Methods in Engineering
Volume: 46, Number: 9, page: 1435-1462, November 1999

    Abstract    
The problem of contact between a part and a tool or between two deforming bodies is analysed in view of metal-forming processes. For simplicity, only the case of viscoplastic materials is considered. The velocity formulation is presented. The contact with a rigid tool is considered first and various forms of contact formulations are described: nodal contact, integral or discrete formulation with a penalty or with a Lagrange multiplier method. The time integration is considered which results in various explicit or implicit contact formulations. A special attention is paid to the contact between two deforming bodies or to the self-contact when a fold is generated in the work-piece. Some 2-D and 3-D application examples illustrate the effectiveness of the proposed formulations and algorithms.
Keyword: finite element; metal forming; contact; friction; deformable
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