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dc.contributor.advisorFry, Gary T
dc.creatorKiani, Maysam
dc.date.accessioned2019-03-07T15:52:14Z
dc.date.available2019-05-01T06:09:53Z
dc.date.created2017-05
dc.date.issued2017-02-01
dc.date.submittedMay 2017
dc.identifier.urihttp://hdl.handle.net/1969.1/174896
dc.description.abstractA 3D finite element model is constructed in ABAQUS® to simulate the stress/strain fields that take place under the rolling-contact of railway wheels on rails. This FE model constitutes a faithful replica of a railway wheel that is rolled on a rail segment using a hard-contact over-closure relationship and an elastoplastic material model with isotropic and kinematic hardening. This material model predicts the wheel’s stabilized steady-state structural response using a multiaxial critical-plane fatigue model that accounts for the effect of residual stresses. The steady-state stress/strain response of the wheel is post-processed using algorithms written in MatLab® to obtain state-of-the-art analytical predictions of subsurface micro-crack initiation within the railway wheel. Finally, based on the results obtained from the crack initiation study, a pre-cracked multiscale model is constructed to investigate the influence of a subsurface crack on the wheel’s stress fields.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectMulti-scale modeling
dc.subjectCritical-plane method
dc.subjectSubsurface cracks
dc.subjectWheel fatigue
dc.subjectFatigue life assessment
dc.titleMulti-Scale Fatigue Damage Life Assessment of a Railway Wheel Using a Critical-Plane Model
dc.typeThesis
thesis.degree.departmentCivil Engineering
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorTexas A & M University
thesis.degree.nameDoctor of Philosophy
thesis.degree.levelDoctoral
dc.contributor.committeeMemberJones, Harry L
dc.contributor.committeeMemberKeating, Peter B
dc.contributor.committeeMemberHanifah Muliana, Anastasia
dc.type.materialtext
dc.date.updated2019-03-07T15:52:14Z
local.embargo.terms2019-05-01
local.etdauthor.orcid0000-0001-9123-7895


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