This paper presents a Point Based (PB) spline degenerate shell finite element model to analyze the behavior of thin and moderately thick-walled structures. Complex shapes are modeled with several B-spline patches assembled as in conventional finite element technique. The refinement of the solution is carried out by superimposing a tensorial set of B-spline functions on a patch and employing the PB-spline generalization. The domains for the numerical integration are defined by making use of the retained tensorial framework. Some numerical examples are presented. Considerations regarding strengths and limits of the approach then follow.

PB-spline finite element shell modeling and refinement technique

CARMINELLI, ANTONIO;CATANIA, GIUSEPPE
2009

Abstract

This paper presents a Point Based (PB) spline degenerate shell finite element model to analyze the behavior of thin and moderately thick-walled structures. Complex shapes are modeled with several B-spline patches assembled as in conventional finite element technique. The refinement of the solution is carried out by superimposing a tensorial set of B-spline functions on a patch and employing the PB-spline generalization. The domains for the numerical integration are defined by making use of the retained tensorial framework. Some numerical examples are presented. Considerations regarding strengths and limits of the approach then follow.
2009
Proceedings of the ASME 2009 Design Engineering Technical Conferences & Computers and Ingormation in Engineering Conference (IDETC2009)
1
9
A. Carminelli; G. Catania
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/77372
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