The dual boundary element method applied to semi-infinite surface cracks in two-dimensions

The goal of his thesis is to evaluate the stress intensity factors (SIF) for surface cracks in semi-infinite solids via the DBEM. We first detail the derivations of the boundary element and dual boundary element methods. The main difficulty with these methods are integrations of the singular integrals which cannot be accuartely evaluated via standard Gauss quadrature schemes. An analytical integration scheme has therefore been implemented to overcome this difficulty. The SIFs are recovered as a post-processing step using the crack tip opening displacement method. A computer code using FORTRAN.90 is developed to verify the effectiveness of the DBEM and its application to fracture problems.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Koehler, Daniel

Contributors dc:contributor

• Tortorelli, Daniel A.

• Dual Boundary Element Method
• semi-infinite edge cracks
• hypersingular integration

Statement dc:rights

• Copyright 2014 Daniel G. Koehler

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/72883

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/72883