A NOTE ON THE TREATMENT OF FRICTIONLESS CONTACT BETWEEN NONSMOOTH SURFACES IN FULLY NONLINEAR PROBLEMS

Citation
Ta. Laursen et S. Govindjee, A NOTE ON THE TREATMENT OF FRICTIONLESS CONTACT BETWEEN NONSMOOTH SURFACES IN FULLY NONLINEAR PROBLEMS, Communications in numerical methods in engineering, 10(11), 1994, pp. 869-878
Citations number
8
Categorie Soggetti
Mathematical Method, Physical Science",Mathematics,Engineering
ISSN journal
10698299
Volume
10
Issue
11
Year of publication
1994
Pages
869 - 878
Database
ISI
SICI code
1069-8299(1994)10:11<869:ANOTTO>2.0.ZU;2-I
Abstract
An approach is presented for the formulation of the unilateral contact constraint in the presence of contact surface discontinuities. Such d iscontinuities may be due to physical corners on the surfaces of conta cting bodies, or may be introduced by a discretization process (e.g. f inite elements). It is asserted that a strong analogy exists between t his problem and the one describing inelastic evolution in the presence of a discontinuous yield surface. This analogy is exploited to produc e an effective treatment of the frictionless corner problem, complete with an effective augmented Lagrangian implementation for accurate con straint enforcement.