2026-09-20T17:08:26Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/72883 2023-07-11 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Dual Boundary Element Method Tortorelli, Daniel A. Koehler, Daniel 2015-01-21T19:49:10Z 2015-01-21T19:49:10Z 2014-12 2015-01-21 2014-12 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. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2014-09-26T18:08:55Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Koehler_Daniel.pdf: 824613 bytes, checksum: 9b5e5838759abfbac4048f14bc107c03 (MD5) Made available in DSpace on 2015-01-21T19:49:10Z (GMT). No. of bitstreams: 1 Daniel_Koehler.pdf: 799513 bytes, checksum: 50a24ae3424e63d0777045d93d5b48a6 (MD5) http://hdl.handle.net/2142/72883 en Copyright 2014 Daniel G. Koehler semi-infinite edge cracks hypersingular integration The dual boundary element method applied to semi-infinite surface cracks in two-dimensions text Mechanical Sci & Engineering 1917 Mechanical Engineering 0133 University of Illinois at Urbana-Champaign Thesis M.S. MS:Mechanical Engineerng -UIUC 10KS0133MS