An Eulerian-Lagrangian finite element method for modeling crack growth in creeping materials

Ductile, history-dependent material behavior governs crack growth in metal structures that are exposed to high temperatures over extended periods, such as nuclear power plants and gas turbines. This study is concerned with the development of finite element solution methods for the analysis of quasi-static, ductile crack growth in history-dependent materials. The mixed Eulerian-Lagrangian description (ELD) kinematic model is shown to have several desirable properties for modeling inelastic crack growth. Accordingly, a variational statement based on the ELD for history-dependent materials is developed and a new moving-grid finite element method based on the variational statement is presented. The moving-grid finite element method is applied to the analysis of transient, quasi-static, mode-III crack growth in creeping materials.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Lee, Hae Sung

Contributors dc:contributor

• Haber, Robert B.

• Applied Mechanics
• Engineering, Civil

Statement dc:rights

• Copyright 1991 Lee, Hae Sung

Language dc:language

eng

Identifier

AAI9136648
(UMI)AAI9136648

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20376