Rigid body formulation in a finite element context with contact interaction

Autor(es)

Refachinho de Campos, Paulo R. ^[1] ; Neto, Alfredo Gay ^[1]

Afiliação do(s) autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: COMPUTATIONAL MECHANICS; v. 62, n. 6, p. 1369-1398, DEC 2018.
• Citações Web of Science: 1

Resumo

The present work proposes a formulation to employ rigid bodies together with flexible bodies in the context of a nonlinear finite element solver, with contact interactions. Inertial contributions due to distribution of mass of a rigid body are fully developed, considering a general pole position associated with a single node, representing a rigid body element. Additionally, a mechanical constraint is proposed to connect a rigid region composed by several nodes, which is useful for linking rigid/flexible bodies in a finite element environment. Rodrigues rotation parameters are used to describe finite rotations, by an updated Lagrangian description. In addition, the contact formulation entitled master-surface to master-surface is employed in conjunction with the rigid body element and flexible bodies, aiming to consider their interaction in a rigid-flexible multibody environment. New surface parameterizations are presented to establish contact pairs, permitting pointwise interaction in a frictional scenario. Numerical examples are provided to show robustness and applicability of the methods. (AU)

• Processo FAPESP: 16/14230-6 - Generalização da formulação "master-master" para a mecânica computacional do contato
• Beneficiário: Alfredo Gay Neto
• Modalidade de apoio: Bolsas no Exterior - Pesquisa