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RESEARCH PAPERS

Automation and Assessment of Augmented Lagrangian Algorithms for Frictional Contact Problems

[+] Author and Article Information
T. A. Laursen, V. G. Oancea

Department of Civil and Environmental Engineering, Duke University, Box 90287, Durham, NC 27708-0287

J. Appl. Mech 61(4), 956-963 (Dec 01, 1994) (8 pages) doi:10.1115/1.2901586 History: Received July 16, 1993; Revised December 15, 1993; Online March 31, 2008

Abstract

In recent work, the augmented Lagrangian approach to large deformation frictional contact problems has been advocated for finite element calculations. The resulting algorithms have been shown to facilitate accurate constraint enforcement in a robust manner, while providing an effective technique for removal of the nonsymmetry associated with most frictional constitutive laws. In this work, we examine automation schemes for the algorithm, such that multipliers can be determined to a specified degree of accuracy without user intervention. The performance of the resulting automatic augmentation algorithm is then examined, providing important information about practical attributes of the procedure.

Copyright © 1994 by The American Society of Mechanical Engineers
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