Análise elasto-plástica da propagação de trincas não-passantes em estruturas de superfície utilizando elementos escalares

The purpose of this work is to analyse the behaviour of surface structures with part-through surface crack. The structure is modeled using degenerated tri-dimensional quadratic finite elements in conjuntion with line-spring elements for crack simulation. The analysis is performed considering linear elasticity resulting in the avaluation of the stress intensity factor KI. For the non linear elasto-plastic case, the release rate potential energy in the crack, known as J-integral is evaluated. ln both cases, the crack opening displacements (C.O.D.) are calculated. The hipothesis and formulations are presented, as well as the general aspects of the computational implementation. Some exemples are discussed and results compared with other solutions. This work ends with a discussion of these advantages and limitations of the studied model and further developments.

Grantor dc:publisher

Universidade Federal do Rio de Janeiro

Year dc:date.issued

1986

Author dc:creator

• Souza, Luiz Antonio de

Advisor dc:contributor.advisor

• Ebecken, Nelson Francisco Favilla

• Engenharia Civil

Statement dc:rights

• Acesso Aberto

Language dc:language

por

Handle dc:identifier.uri

http://hdl.handle.net/11422/3679

OAI identifier oai:identifier

oai:pantheon.ufrj.br:11422/3679