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Communication Dans Un Congrès Année : 2010

A 3D contact smoothing method based on quasi-C1 interpolation and normal voting - Application to 3D forging and rolling

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Résumé

This paper describes the effect of tool discretization accuracy on the simulation of forming processes, especially for processes where the contact area is quite small with respect to the component size. For smoothing contact surface discretized by linear triangles, an algorithm is followed to develop a higher order quadratic interpolation of the curved surface from the positions and normal vectors of the nodes, as proposed by Nagata. Normal vectors are calculated at each node from the existing discretized surface by considering a patch of surrounding elements. This is accomplished by the mean of normal voting strategy. The efficiency and reliability of the resulting contact model are checked through several examples like indenting and ironing a bulk parallelepiped. It is also applied to complex ring rolling, form rolling and extrusion problems
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Dates et versions

hal-00524178 , version 1 (07-10-2010)

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Maha Hachani, Lionel Fourment. A 3D contact smoothing method based on quasi-C1 interpolation and normal voting - Application to 3D forging and rolling. NUMIFORM 2010: Proceedings of the 10th International Conference on Numerical Methods in Industrial Forming Processes Dedicated to Professor O. C. Zienkiewicz (1921–2009), Jun 2010, Pohang, North Korea. pp.Pages 487-495, ⟨10.1063/1.3457594⟩. ⟨hal-00524178⟩
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