Application of a non-invasive form finding algorithm to the ring compression test with varying friction coefficients

Landkammer, P. and Steinmann, P. (2015) Application of a non-invasive form finding algorithm to the ring compression test with varying friction coefficients. Key Engineering Materials, 651-3, pp. 1381-1386. (doi: 10.4028/www.scientific.net/KEM.651-653.1381)

Abstract

It is a great challenge in the development of functional components to determine the optimal blank design (material configuration) of a workpiece according to a specific forming process, while knowing the desired target geometry (spatial configuration). A new iterative non-invasive algorithm, which is purely based on geometrical considerations, is developed to solve inverse form finding problems. The update-step is performed by mapping the nodal spatial difference vector, between the computed spatial coordinates and the desired spatial target coordinates, with a smoothed deformation gradient to the discretized material configuration. The iterative optimization approach can be easily coupled non-invasively via subroutines to arbitrary finite element codes such that the pre-processing, the solving and the post-processing can be performed by the habitual simulation software. This is exemplary demonstrated by an interacting between Matlab (update procedure) and MSC. MarcMentat (forming simulation). The algorithm succeeds for a parameter study of a ring compression test within nearly linear convergence rates, despite highly deformed elements and tangential contact with varying friction parameters.

• Item Type: Articles
• Additional Information: 18th International ESAFORM Conference on Material Forming, ESAFORM 2015; Graz; Austria; 15 April 2015 through 17 April 2015.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Steinmann, Professor Paul
• Authors: Landkammer, P., and Steinmann, P.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: Key Engineering Materials
• Publisher: Trans Tech Publications
• ISSN: 1013-9826
• ISSN (Online): 1662-9795