Banca de DEFESA: ANTONIO RIBEIRO SANTOS JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ANTONIO RIBEIRO SANTOS JUNIOR
DATA : 13/12/2018
HORA: 09:00
LOCAL: Sala de Videoconferência Hernani Sobral da Escola Politécnica da UFBA
TÍTULO:

Element Method, Finite Contact Problem, Structural Dynamics, B-Spline.

PALAVRAS-CHAVES:

Element Method, Finite Contact Problem, Structural Dynamics, B-Spline.

PÁGINAS: 188
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
ESPECIALIDADE: Mecânica das Estruturas
RESUMO:

In this research the theoretical basis on the formulation of the problem of mechanical contact with friction for three-dimensional solids is presented, based on the mechanics of the continuum, the study of the nonlinear dynamics and its applications in the study of mechanical contact in the regime of large deformations. The formulation of the mechanics of the solids using the weak form is developed, obtaining the balance equilibrium equation of the moments, by the energy equation model of a Neo-Hookian material with hyperelastic properties. The Lagrangian Increased method is applied to the numerical solution of the contact problem and, in addition, the B-Spline contact element is substituted for the Lagrangian contact element, aiming at the use of a smooth and curved surface obtained from of the master surface softened by the B-Spline curve. Initially, a mechanical contact program in Programming Language C is implemented using the tetrahedral finite element replacing the hexahedral element. Next, we proceed with the study of the dynamics of the structures, developing a dynamic analysis for the mechanical contact. To complete, the algorithm of the dynamic analysis of the mechanical contact is developed and implemented in the computational code. The Newmark Method is used in the time integration for the dynamic analysis. At the end of the work, modeling of examples is presented, analyzing the effect of mechanical contact with dynamics between deformable bodies.

MEMBROS DA BANCA:
Presidente - 1675606 - ALEX ALVES BANDEIRA
Interno - 2256014 - MARCO TULIO SANTANA ALVES
Externo à Instituição - JOSE MÁRIO FEITOSA LIMA - UEFS