Principios variacionales y soluciones numéricas en elasto-visco-plasticidad

In the first part of this work a viscoplastic model is studied and it is shown how the viscoplasticity theory can be used not only to model this behavior but also to model plasticity as well as creep. The mixed-initial boundary value problem in elasto/viscoplasticity is presented for the case of quasi-static iso- thermal process and infinitesimal deformations. Different variational formulations related to the above boundary value problan are also deduced. A numerical algorithm based on the Finit Element Method and the Euler's Method, for the spacial and time cretizations respectively is presented. The algorithm in then used to obtain approximate solutions in elasto-plasticity, secundary creep and elasto/ viscoplasticity problems.

Grantor dc:publisher

Universidade Federal do Rio de Janeiro

Year dc:date.issued

1980

Author dc:creator

• Taroco, Edgar

Advisor dc:contributor.advisor

• Feijóo, Raul Antonino

• Viscoplsticidade das estruturas
• Resistência dos materiais
• Método dos elementos finitos

Statement dc:rights

• Acesso Aberto

Language dc:language

spa

Handle dc:identifier.uri

http://hdl.handle.net/11422/3576

OAI identifier oai:identifier

oai:pantheon.ufrj.br:11422/3576