Article (Scientific journals)
A quadratic contact element passing the patch test
Nguyen, Duc-Tué; Rauchs, Gast; Ponthot, Jean-Philippe
2016In Key Engineering Materials, 681, p. 47-85
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Keywords :
numerical simulation; contact element,; virtual slave node method; node-to-segment; patch test; penalty algorithm
Abstract :
[en] For the two dimensional contact modeling, the standard node-to-segment quadratic contact elements are known to exhibit oscillations of the contact pressure. This situation is particularly critical when using the penalty method with a high penalty parameter because the amplitude of the oscillations increase with increasing penalty parameter. The aim of this article is to present a method for removing the oscillations of contact pressure observed while using quadratic contact element. For this purpose, the nodal forces at the slave and at the master nodes need to be evaluated appropriately. One possibility is to develop a suitable procedure for computing the nodal forces. In that sake, we selected the approach first proposed in [35] in an appropriate manner. After presenting the improved quadratic contact element, some numerical examples are illustrated in this paper to compare the standard quadratic node-to-segment element with the proposed element. The examples show that the proposed element can strongly reduce the oscillating contact pressure for both plane and curved contact surfaces.
Disciplines :
Mechanical engineering
Author, co-author :
Nguyen, Duc-Tué;  Bosch Vietnam
Rauchs, Gast;  Department of Materials Research and Technology, Luxembourg Institute of Science and Technology, 41 Brillstrooss, L-4422 Bieles, Luxembourg
Ponthot, Jean-Philippe  ;  Université de Liège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A quadratic contact element passing the patch test
Publication date :
2016
Journal title :
Key Engineering Materials
ISSN :
1013-9826
eISSN :
1662-9795
Publisher :
Trans Tech Publications, Aedermannsdorf, Switzerland
Special issue title :
Wear and Contact Mechanics II
Volume :
681
Pages :
47-85
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 February 2016

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