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A Symmetric Tangent Operator Recovery via Quasi-Coulomb Model for Frictional Contact Between Solids in Large Deformation Analysis
Garcìa Garino, Carlos; Ponthot, Jean-Philippe; Boman, Romain et al.
1999In ECCM’99, European Conference on Computational Mechanics
Peer reviewed
 

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Keywords :
Friction; Contact; Plasticity; Large deformations
Abstract :
[en] Frictional contact interfaces have to be modeled in practice when industrial problems such as metal forming operations, crashworthiness, and so on, have to be simulated. Usually a Coulomb model is used in order to describe the constitutive law for the frictional case. Following a standard plasticity approach to Coulomb law a non-symmetric tangent operator is found, and so a non-symmetric solver has to be used in order to take full advantage of consistent operators. With respect to symmetric ones, these non-symmetric operators lead to prohibitive computational times. However, in practice different schemes have been proposed in order to recover the symmetric operator, and consequently, use a symmetric solver. In this work an alternative approach based on an idea due to Garcia Garino and Oliver [33] is defined in order to avoid to deal with non-symmetric solvers and thus save a large amount of computational time, which renders the computational simulation more attractive to industry. Applications to metal forming simulations and crashworthiness analysis are envisaged.
Disciplines :
Mechanical engineering
Author, co-author :
Garcìa Garino, Carlos;  Instituto Tecnologico Universitario, UNC, Mendoza, Argentina
Ponthot, Jean-Philippe  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Boman, Romain  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Oliver, Javier;  Instituto Tecnologico Universitario, UNC, Mendoza, Argentina
Language :
English
Title :
A Symmetric Tangent Operator Recovery via Quasi-Coulomb Model for Frictional Contact Between Solids in Large Deformation Analysis
Publication date :
August 1999
Event name :
ECCM’99, European Conference on Computational Mechanics
Event place :
München, Germany
Event date :
Aug 31 - Sep 3, 1999
By request :
Yes
Audience :
International
Main work title :
ECCM’99, European Conference on Computational Mechanics
Peer reviewed :
Peer reviewed
Available on ORBi :
since 16 July 2009

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