On the membrane approximation for thin elastic shells in the hyperbolic case.

Título original
Título inglés	On the membrane approximation for thin elastic shells in the hyperbolic case.
Título español	Aproximación de membrana para cubiertas elásticas laminares en el caso hiperbólico.
Autor/es	Sánchez-Palencia, E.
Organización	Lab. Modél. Mécan. Univ. Pierre et Marie Curie, París, Francia
Revista	0214-3577
Publicación	1993, 6 (2): 311-331, 13 Ref.
Tipo de documento	articulo
Idioma	Inglés
Resumen inglés	We consider the variational formulation of the problem of elastic shells in the membrane approximation, when the medium surface is hyperbolic. It appears that the corresponding bilinear form behaves as some kind of two-dimensional elasticity without shear rigidity. This amounts to saying that the membrane behaves rather as a net made of elastic strings disposed along the asymptotic curves of the surface than as an elastic two-dimensional medium. The mathematical and physical reasons of this behavior are explained and consequences are thrown concerning the admissible applied forces and the behavior of the solutions. The normal component of the displacement is somewhat non smooth. Our approach gives a description of the problem in somewhat general situations concerning the boundary conditions, whereas the classical approach in terms of a hyperbolic system of total order 4 with 2 double characteristics (the asymptotic lines) only works in the case when the boundary conditions lead to either Cauchy or Goursat problems.
Clasificación UNESCO	330501 ; 220503
Palabras clave español	Estructuras laminares ; Cubiertas y tejados ; Elasticidad ; Estudio físico matemático ; Membranas
Código MathReviews	MR1269760
Código Z-Math	Zbl 0809.73042
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