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 / A. Carminelli; G. Catania. - ELETTRONICO. - 1:(2009), pp. 1-9. (Intervento presentato al convegno Proceedings of the ASME 2009 Design Engineering Technical Conferences & Computers and Ingormation in Engineering Conference (IDETC2009) tenutosi a San Diego, CA, Usa nel August 30 - Sept. 2, 2009) [10.1115/DETC2009-87232].
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.