AUTOMATION AND ASSESSMENT OF AUGMENTED LAGRANGIAN ALGORITHMS FOR FRICTIONAL CONTACT PROBLEMS

Citation
Ta. Laursen et Vg. Oancea, AUTOMATION AND ASSESSMENT OF AUGMENTED LAGRANGIAN ALGORITHMS FOR FRICTIONAL CONTACT PROBLEMS, Journal of applied mechanics, 61(4), 1994, pp. 956-963
Citations number
21
Categorie Soggetti
Mechanics
ISSN journal
00218936
Volume
61
Issue
4
Year of publication
1994
Pages
956 - 963
Database
ISI
SICI code
0021-8936(1994)61:4<956:AAAOAL>2.0.ZU;2-B
Abstract
In recent work, the augmented Lagrangian approach to large deformation frictional contact problems has been advocated for finite element cal culations. The resulting algorithms have been shown to facilitate accu rate constraint enforcement in a robust manner, while providing an eff ective technique for removal of the nonsymmetry associated with most f rictional constitutive laws. In this work, we examine automation schem es for the algorithm, such that multipliers can be determined to a spe cified degree of accuracy without user intervention. The performance o f the resulting automatic augmentation algorithm is then examined, pro viding important information about practical attributes of the procedu re.