Application of displacement and traction boundary integral equations for fracture mechanics analysis

dc.contributor.advisor Thomas J. Rudolphi
dc.contributor.author Youn, Seungwon
dc.contributor.department Aerospace Engineering
dc.date 2018-08-22T21:57:56.000
dc.date.accessioned 2020-06-30T07:03:37Z
dc.date.available 2020-06-30T07:03:37Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 1993
dc.date.issued 1993
dc.description.abstract <p>A general formulation by dual boundary integral equations and a computational solution algorithm for the general mixed-mode crack in a linearly elastic, isotropic medium is presented. Traction boundary integral equations are collocated at the points on one crack surface while displacement boundary integral equations are collocated at the opposite points on the other surface to ensure a unique solution. The hypersingular and strongly singular integrals in the traction and displacement boundary integral equations are regularized before the numerical implementation. The singular integration elements on both crack surfaces are replaced by smooth curved auxiliary surfaces to avoid the direct integration over the singular elements. Usage of these detoured auxiliary contours is justified by certain identities of the fundamental solutions. Convergence tests for integration order and subdivision of the auxiliary surface elements were performed. To demonstrate the accuracy and efficiency of the present technique, the deformation and the stress intensity factors for two- and three-dimensional embedded and edge crack problems are given.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/10290/
dc.identifier.articleid 11289
dc.identifier.contextkey 6399197
dc.identifier.doi https://doi.org/10.31274/rtd-180813-9631
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/10290
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/63420
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/10290/r_9335039.pdf|||Fri Jan 14 18:17:38 UTC 2022
dc.subject.disciplines Applied Mechanics
dc.subject.keywords Aerospace engineering and engineering mechanics
dc.subject.keywords Engineering mechanics
dc.title Application of displacement and traction boundary integral equations for fracture mechanics analysis
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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