Asymptotic analysis of linearly elastic shells: error estimates in the membrane case
Abstract
International audienceThe linear static problem for a thin shell made of a homogeneous and isotropic elastic material is analyzed. It is assumed that the shell thickness is constant, the neutral shell surface S\coloneq\bftheta(\omega) is bounded connected and elliptic and the shell edge is clamped. The solution of the three-dimensional problem is compared with the solution \bfzeta of the corresponding two-dimensional membrane problem. The following estimate is proved for small enough: ||{\bf u}(\epsilon)-\bfzeta ||_ {H^1(\Omega)\times H^1(\Omega)\times L^2(\Omega)}\le C\epsilon^a,\quad a={1\over6},\tag1where . Here \bftheta\colon\ \omega\to{\bf R}^3 is a mapping of class , the external body forces with , and \bfzeta(y,x_3)=\bfzeta(y)\in{\bf H}^2(\Omega). It is also shown that inequality (1) cannot hold with even for smooth enough functions- info:eu-repo/semantics/article
- Journal articles
- Shells
- elasticity
- asymptotics
- error estimates
- three-dimensional model
- [MATH]Mathematics [math]
- [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP]
- [MATH.MATH-FA]Mathematics [math]/Functional Analysis [math.FA]
- [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph]
- [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Mechanics of the solides [physics.class-ph]