Self-contact modeling on beams experiencing loop formation

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: COMPUTATIONAL MECHANICS; v. 55, n. 1, p. 193-208, JAN 2015.
• Citações Web of Science: 21

Resumo

Many engineering scenarios involve contact between beam structures or, eventually, self-contact. Specifically when dealing with a beam submitted to large torsion loads and considering large displacements and rotations, it is possible to occur self-contact. Beams with low bending stiffness loaded with large torsion can present a loop, followed by self-contact and sometimes a snarl formation. This work presents a numerical model and numerical procedures to solve such a kind of self-contact in beams under loop formation. Numerical examples are presented in the context of initially straight nitinol beams. Numerical tests showed that friction may influence loop and snarling formation. Numerical models could predict self-contact occurrence events with good agreement with experimental results already published in literature. Snarling patterns (when occurred) were also predicted correctly, but with delay when compared to experiments. This delay showed to be friction-dependent. (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: 14/11910-0 - 11th World Congress on Computational Mechanics
• Beneficiário: Alfredo Gay Neto
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Exterior