Hostname: page-component-77c89778f8-cnmwb Total loading time: 0 Render date: 2024-07-17T10:43:04.987Z Has data issue: false hasContentIssue false

On a Signorini problem for inclusions in shells

Published online by Cambridge University Press:  26 September 2008

A. M. Khludnev
Affiliation:
Lavrentyev Institute of Hydrodynamics, Novosibirsk, 630090, Russia

Abstract

We consider an equilibrium problem for a thin inclusion in a shell. The faces of the inclusion are assumed to satisfy a non-penetration condition, which is an inequality imposed on the tangential shell displacements. The properties of the solution are studied, in particular, the smoothness of the stress field in the vicinity of the inclusion. The tangential displacements are proved to belong to the space H2 near the internal points of the inclusion. The character of the contact between the inclusion faces is described in terms of a suitable non-negative measure. The stability of the solution is investigated for small perturbations to the inclusion geometry.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Banichuk, N. V. (1970). The small parameter method of finding a curvilinear crack shape. Trans. USSR Academy of Sciences. Mechanics of Solid 2, 130137 (in Russian).Google Scholar
Cherepanov, G. P. (1979). Mechanics of Brittle Fracture. McGraw-Hill.Google Scholar
Donnell, L. H. (1976). Beams, Plates and Shells. McGraw-Hill.Google Scholar
Elliott, C. M. & Ockendon, J. R. (1982). Weak and variational methods for moving boundary problems. Pitman Research Notes in Math. 59.Google Scholar
Fichera, G. (1972). Boundary value problems of elasticity with unilateral constraints. In: Handbuch der Physik, Band 6a/2. Springer-Verlag.Google Scholar
Goldshtein, R. & Entov, V. (1989). Qualitative Methods in Continuum Mechanics. Nauka (in Russian).Google Scholar
Grisvard, P. (1989). Singularities en elasticite. Arch. Rational Mech. Anal. 107, 157180.CrossRefGoogle Scholar
Khludnev, A. M. (1992). On extreme crack shapes in a plate. Trans. Russian Academy of Sciences. Mechanics of Solid (1), 170176 (in Russian).Google Scholar
Khludnev, A. M. (1994). Existence of extreme unilateral cracks in a plate. Control and Cybernetics 23 (3), 453460.Google Scholar
Khludnev, A. M. (1995). Contact problem for a shallow shell having a crack. Appl. Math. Mech. 59 (2), 318326 (in Russian).Google Scholar
Khludnev, A. M. (1983). A contact problem of a linear elastic body and a rigid punch (variational approach). Appl. Math. Mech. 47 (6), 9991005 (in Russian).Google Scholar
Kikuchi, N. & Oden, J. T. (1988). Contact problems in elasticity: A study of variational inequalities and finite element methods. SIAM Studies in Applied Mathematics. SIAM.Google Scholar
Kondratiev, V. A., Kopaček, J. & Oleinik, O. A. (1982). On behaviour of solutions to the second order elliptic equations and elasticity equations in a neighbourhood of boundary points. Proc. Petrovsky's Seminar. Moscow University Publishers 8, 135152 (in Russian).Google Scholar
Landkof, N. S. (1995). Foundations of Modern Potential Theory. Springer-Verlag.Google Scholar
Morozov, N. F. (1984). Mathematical Foundations of the Crack Theory. Nauka (in Russian).Google Scholar
Nicaise, S. (1992). About the Lame system in a polygonal or polyhedral domain and a coupled problem between the Lame system and the plate equation. 1. Regularity of the solutions. Annali Scuola Norm. Super Pisa, serie IV 19, 327361.Google Scholar
Vol'mir, A. S. (1972). Nonlinear Dynamics of Plates and Shells. Nauka (in Russian).Google Scholar