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Listar por palabra clave "NURBS"

Mostrando ítems 1-6 de 6

An Isogeometric Element Formulation for Linear Two-Dimensional Elasticity Based on the Airy Equation

Held, Susanne; Dornisch, Wolfgang; Azizi, Nima (Editorial Universitat Politècnica de València, 2022-05-11)

[EN] The aim of this work is to derive a formulation for linear two-dimensional elasticity using just one degree of freedom. This degree of freedom is used to directly discretize the Airy bipotential equation, which ...
Contact problem modelling using the Cartesian grid Finite Element Method

Navarro Jiménez, José Manuel (Universitat Politècnica de València, 2019-07-29)

[ES] La interacción de contacto entre sólidos deformables es uno de los fenómenos más complejos en el ámbito de la mecánica computacional. La resolución de este problema requiere de algoritmos robustos para el tratamiento ...
Curvilinear mesh generation for CAD models involving trimmed, periodic and degenerated surfaces

De Miguel Barcena, Rodrigo (Universitat Politècnica de València, 2020-07-27)

[EN] The development and implementation of new capabilities to a linear elastic method for curve high-order 3D mesh generation, is described. The new features include the treatment of degenerated surfaces and an updated ...
Exact 3D boundary representation in finite element analysis based on Cartesian grids independent of the geometry

Marco Alacid, Onofre; Sevilla, R.; Zhang, Yongjie; Ródenas, J.J.; Tur Valiente, Manuel (Wiley, 2015-08)

[EN] This paper proposes a novel Immersed Boundary Method where the embedded domain is exactly described by using its Computer-Aided Design (CAD) boundary representation with Non-Uniform Rational B-Splines (NURBS) or ...
On the effect of the contact surface definition in the Cartesian grid finite element method

Navarro-Jiménez, José-Manuel; Tur Valiente, Manuel; Fuenmayor Fernández, Francisco-Javier; Ródenas, Juan José (Springer-Verlag, 2018)

[EN] The definition of the surface plays an important role in the solution of contact problems, as the evaluation of the contact force is based on the measure of the gap between the solids. In this work three different ...
Robust h-adaptive meshing strategy considering exact arbitrary CAD geometries in a Cartesian grid framework

Marco, O.; Ródenas, J.J.; Navarro-Jiménez, J.M.; Tur Valiente, Manuel (Elsevier, 2017)

[EN] Geometry plays a key role in contact and shape optimization problems in which the accurate representation of the exact geometry and the use of adaptive analysis techniques are crucial to obtaining accurate ...