Implicit 2D Numerical Simulation of Materials Submitted to High Strain Rates Including Fracture

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Abstract:

In this paper, we present a general consistent numerical formulation able to take into account strain rate and thermal effects of the material behavior. A thermomechanical implicit approach for element erosion to model material failure is also presented. The numerical model will be illustrated by applications both from the metal forming and the impact domain. All these physical phenomena have been included in an implicit dynamic oriented object finite element code (implemented at LTAS-MN²L, University of Liège, Belgium) named Metafor [1].

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Key Engineering Materials (Volumes 535-536)

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80-84

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January 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] METAFOR, home made Finite Element Code http: /www. ltas-mnl. ulg. ac. be/dokuwiki/doku. php?id=metafor: start.

Google Scholar

[2] Jeunechamps P. -P. and Ponthot J. -P., An efficient implicit approach for the thermomechanical behavior of materials submitted to high strain rates, J. de Phys. IV, Vol. 134, 2006, pp.515-520.

DOI: 10.1051/jp4:2006134079

Google Scholar

[3] Belytschko T. and Lin J. A 3D impact penetration algorithm with erosion, Comp. & Structures, 25 (1987), 95-104.

Google Scholar

[4] Børvik T., Hopperstad O., Dey S., Pizzinato E., Langseth M. and Albertini C., Strength and ductility of Weldox 460 E steel at high strain rates, elevated temperatures and various stress triaxialities, Engineering Fractures Mechanics, Vol. 72, 2005, pp.1071-1087.

DOI: 10.1016/j.engfracmech.2004.07.007

Google Scholar

[5] Armero F. and Simo J., A new unconditionally stable fractional step method for non-linear coupled thermomechanical problems, Int. J. Numer. Methods Engrg., 35 (1992), 737-766.

DOI: 10.1002/nme.1620350408

Google Scholar

[6] Chung J. and Hulbert G., A time integration algorithms for structural dynamics with improved numerical dissipations: the generalized-α method, J. of Applied Mech. 60 (1993), 371-375.

DOI: 10.1115/1.2900803

Google Scholar

[7] Mediavilla J. and Peerlings R. and Geers M., A Robust and Consistent Remeshing-Transfer Operator for Ductile Fracture Simulations, Computers & Structures, 84 (2006), 604-623.

DOI: 10.1016/j.compstruc.2005.10.007

Google Scholar

[8] Johnson, G. and Cook, W., 1985. Fracture characteristics of three metals subjected to various strains, strain rates, temperatures, and pressures, Eng. Fracture Mechanics, Vol. 21, pp.31-48.

DOI: 10.1016/0013-7944(85)90052-9

Google Scholar