T-spline-based isogeometric analysis is applied to frictionless contact problems between deformable bodies in the context of large deformations. The continuum is discretized with cubic T-splines and cubic NURBS. A Gauss-point-to-surface formulation is combined with the penalty method to treat the contact constraints in the discretized setting. It is demon- strated that analysis-suitable T-splines, coupled with local refinement, accurately approx- imate contact pressures with far fewer degrees of freedom than NURBS. Both two- and three-dimensional examples are presented. Additionally, all T-spline analysis models are generated using commercially available T-spline modeling software without intermediate mesh generation or geometry clean-up steps.

Isogeometric large deformation frictionless contact using T-splines

DIMITRI, ROSSANA;DE LORENZIS, Laura;ZAVARISE, Giorgio
2014-01-01

Abstract

T-spline-based isogeometric analysis is applied to frictionless contact problems between deformable bodies in the context of large deformations. The continuum is discretized with cubic T-splines and cubic NURBS. A Gauss-point-to-surface formulation is combined with the penalty method to treat the contact constraints in the discretized setting. It is demon- strated that analysis-suitable T-splines, coupled with local refinement, accurately approx- imate contact pressures with far fewer degrees of freedom than NURBS. Both two- and three-dimensional examples are presented. Additionally, all T-spline analysis models are generated using commercially available T-spline modeling software without intermediate mesh generation or geometry clean-up steps.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/383590
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