2009
DOI: 10.1007/s00466-009-0396-1
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Developments in the application of the generalized finite element method to thick shell problems

Abstract: This paper develops and analyzes two techniques to extend the use of generalized finite element method techniques to structural shell problems. The first one is a procedure to define local domains for enrichment functions based on the use of pseudo-tangent planes. The second one is a procedure for imposing homogeneous essential boundary conditions and treatment of boundary layer problems by utilizing special functions. The main idea supporting the pseudo-tangent proposition is the separation of the geometric d… Show more

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Cited by 9 publications
(4 citation statements)
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“…In this way, the enriched function is preserved throughout the domain. For arbitrarily shaped domains, where the boundary segments are neither straight nor parallel to a given coordinate axis, the procedure proposed in Garcia et al (2009) can be used, where the partition of unity associated to the boundary node is substituted by it multiplied by a ramp function which is zero at the boundary.…”
Section: Numerical Resultsmentioning
confidence: 99%
“…In this way, the enriched function is preserved throughout the domain. For arbitrarily shaped domains, where the boundary segments are neither straight nor parallel to a given coordinate axis, the procedure proposed in Garcia et al (2009) can be used, where the partition of unity associated to the boundary node is substituted by it multiplied by a ramp function which is zero at the boundary.…”
Section: Numerical Resultsmentioning
confidence: 99%
“…Barcellos et al (2009) develops a C k continuous finite element formulation for the Kirchhoff laminate model. A procedure to define richer approximate subspaces for shell structures and the treatment of the boundary layer phenomenon is addressed by Garcia et al (2009).…”
Section: Generalized Finite Element Methodsmentioning
confidence: 99%
“…Therefore, the Dirichlet boundary conditions cannot be directly imposed, making special procedures necessary to impose them. One efficient procedure to impose these conditions is through the so-called boundary functions, as developed by Garcia (2003) and Garcia et al (2009).…”
Section: Generalized Finite Element Methodsmentioning
confidence: 99%
“…Extrinsic enrichment is characterized by adding unknowns to the nodes, such that each additional unknown is associated with a new applied enrichment functions (see, for instance, [24][25][26][27][28]). Therefore, the PoU functions can be called "pasting functions" as they bring about implicit domain discretization (defining compact supports), merge various local approximations by performing an unbiased average, and determine their order or continuity across element boundaries [29].…”
Section: Recent Developments On Mesh-based Approximantsmentioning
confidence: 99%