DYMAT 2009
Volume 2, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 1383 - 1389
Section Constitutive Modeling
Published online 15 September 2009
DYMAT 2009 (2009) 1383-1389
DOI: 10.1051/dymat/2009195

Advanced experimental investigation and numerical simulation of polycarbonate behaviour at different strain-rate and temperature

M. Peroni, L. Peroni and M. Avalle

Dept. of Mechanics, Politecnico di Torino – Duca degli Abruzzi 24, 10129 Torino, Italy

Published online: 15 September 2009

Modelling the mechanical behaviour of plastics in simulating large strains and large displacements (as in impact simulations) is a complex task due to the highly non-linear characteristics of these materials. Moreover, non negligible influences of strain-rate, multiaxial loading, and temperature are present and must be taken into account accordingly. This work presents some results about the modelling of these effects for a thermoplastic used in automotive components. The model was developed based on experimental results obtained in different loading conditions, with different temperature and strain-rate. In this work the characterization of a polycarbonate for automotive applications has been carried out. A detailed experimental tests campaign covering the main influencing factors has been first fulfilled. The experimental results were used to obtain parameters for a suitable model implemented in a numerical code. The explicit and implicit LS-DYNA solvers for dynamic simulations have been used. Good fitting between numerical and simulation results has been obtained and the results provide a very useful tool for the design of plastic body parts.

© EDP Sciences 2009