Title: Implicit and explicit techniques for localised-incremental forging processes analysis by computer aided engineering

Authors: Ana María Camacho; Marta María Marín; Claudio Bernal; Miguel Angel Sebastián

Addresses: Department of Manufacturing Engineering, National Distance University of Spain (UNED), C/ Juan del Rosal 12, Ciudad Universitaria, E 28040, Madrid, Spain ' Department of Manufacturing Engineering, National Distance University of Spain (UNED), C/ Juan del Rosal 12, Ciudad Universitaria, E 28040, Madrid, Spain ' Department of Manufacturing Engineering, National Distance University of Spain (UNED), C/ Juan del Rosal 12, Ciudad Universitaria, E 28040, Madrid, Spain ' Department of Manufacturing Engineering, National Distance University of Spain (UNED), C/ Juan del Rosal 12, Ciudad Universitaria, E 28040, Madrid, Spain

Abstract: Two finite element simulation techniques are applied for the analysis of a basic operation in LIF processes. Implicit and explicit numerical methodologies are used by Abaqus/standard and Abaqus/explicit solvers, respectively. The most suitable mesh and geometry of the punch have been chosen among different ones according to the computation time, accuracy of results and forming capability. Once the mesh and the geometry of the punch are chosen, a single operation is simulated by means of both implicit and explicit FE models. Experimental tests were also conducted. Forces and geometrical profiles were compared among those obtained by experiments and simulations and the results show good correspondence. The explicit FE model looks robust enough to use the same modelling parameters in further studies, where explicit methodology is expected to be mandatory due to multiple-strokes operations.

Keywords: computer aided engineering; CAE; finite element method; FEM; numerical simulation; explicit technique; implicit technique; localised incremental forging; LIF; metal forming; experimental validation; wax; punch geometry.

DOI: 10.1504/IJCAET.2015.068331

International Journal of Computer Aided Engineering and Technology, 2015 Vol.7 No.2, pp.207 - 221

Published online: 31 Mar 2015 *

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