Singular Problems in Shell Theory : Computing and Asymptotics
Overview
Thin shells are three-dimensional structures with a dimension (the thickness) small with respect to the two others.Such thin structures are widely used in automobileandaviation industries, or in civil engineering, because they provide animportantsti?ness, due to theircurvature, with a small weight. Fig. 0.1. Airbus A380 Fig. 0.2. Hemispherical roof (Marseille, France) One ofthechallenges is often to reduce the weight (andconsequently the thickness)oftheshells, preservingtheirsti?ness.So that it is essential to have 1 accuratemodelsforthinandevenverythinshells, andtobeabletocomputethe displacements resultingfromagivenloading.In particular, singularities leading to fractures in some cases must be absolutely predicted a priori and ofcourse avoided (see Fig.0.3 forexample). Since the pioneeringmodels of Novozhilov-Donnell 81] and Koiter 65] 66], numerous works havebeen devoted to establish linear and non linear elastic shell model usingdirect orsurfacic approaches 18] 25] 100]. More recently, the asymptoticmethods 87] havebeen used, to try tojustify rigorously, fromthe three-dimensional equations, the shell models obtained by direct approaches - lying onapriori assumption, andto construct new models 54] 55]. This way, 1 Very thin shells are present in certain domains of industry, as plastic ?lms for pa- aging or for electronics, streched sails, or even very thin metal sheets obtained by drawing. E. Sanchez-Palencia et al.: Singular Problems in Shell Theory, LNACM 54, pp. 1-11.
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Details
- ISBN-13: 9783642138140
- ISBN-10: 3642138144
- Publisher: Springer
- Publish Date: August 2010
- Dimensions: 9.21 x 6.14 x 0.69 inches
- Shipping Weight: 1.25 pounds
- Page Count: 266
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