Contact between rolling beams and flat surfaces

Autor(es)

Gay Neto, Alfredo ^[1] ; Pimenta, Paulo M. ^[1] ; Wriggers, Peter ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Polytech Sch, Sao Paulo - Brazil

^[2] Leibniz Univ Hannover, D-30167 Hannover - Germany

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING; v. 97, n. 9, p. 683-706, MAR 2 2014.
• Citações Web of Science: 12

Resumo

This work presents a new approach to model the contact between a circular cross section beam and a flat surface. In a finite element environment, when working with beam elements in contact with surfaces, it is common to consider node or line to surface approaches for describing contact. An offset can be included in normal gap function due to beam cross section dimensions. Such a procedure can give good results in frictionless scenarios, but the friction effects are not usually properly treated. When friction plays a role (e.g., rolling problems or alternating rolling/sliding) more elaboration is necessary. It is proposed here a method that considers an offset not only in normal gap. The basic idea is to modify the classical definition of tangential gap function in order to include the effect of rigid body rotation that occurs in a rolling scenario and, furthermore, consider the moment of friction force. This paper presents the new gap function definition and also its consistent linearization for a direct implementation in a Newton-Raphson method to solve nonlinear structural problems modeled using beam elements. The methodology can be generalized to any interaction involving elements with rotational degrees of freedom. Copyright (c) 2013 John Wiley \& Sons, Ltd. (AU)

• Processo FAPESP: 12/09912-0 - Dinâmica não linear de risers incluindo o contato unilateral com o fundo do mar
• Beneficiário: Alfredo Gay Neto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 12/21167-8 - Técnicas para a análise computacional do problema de contato em risers
• Beneficiário: Alfredo Gay Neto
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado