Augmented Lagrangian Formulation
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Numerical modeling of contact problems with the finite element method utilizing a B-Spline surface for contact surface smoothing
Abstract The basic aim of this work is to present a method to treat structural mechanics problems dealing with tridimensional contact and large elastic deformations. The formulation presented in this article offers a B-Spline based discretization for the contact surface, which solves the continuity problems presented by the classic Lagrangian contact element
Lat. Am. j. solids struct.. Publicado em: 23/07/2018
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2. Mecanical and numerical models to unidimensional flexible structures / Modelos mecânicos e numéricos para estruturas flexíveis unidimensionais
Apresentamos um modelo matemático geral, baseado na teoria de Cosserat para estruturas flexíveis unidimensionais, em regime de deslocamentos finitos e sujeitas a restrições unilaterais. Ao modelo geral agregamos a hipótese de inextensibilidade e, desprezando os efeitos do cisalhamento e das forças inerciais, formulamos o problema variacionalmente tanto
Publicado em: 2007
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3. Contact with friction using the augmented Lagrangian Method: a conditional constrained minimization problem
This work presents a formulation of the contact with friction between elastic bodies. This is a non linear problem due to unilateral constraints (inter-penetration of bodies) and friction. The solution of this problem can be found using optimization concepts, modelling the problem as a constrained minimization problem. The Finite Element Method is used to co
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000