Vis enkel innførsel

dc.contributor.advisorHauge, Monsnb_NO
dc.contributor.authorMagnor, Williamnb_NO
dc.date.accessioned2014-12-19T12:28:35Z
dc.date.available2014-12-19T12:28:35Z
dc.date.created2013-08-29nb_NO
dc.date.issued2013nb_NO
dc.identifier644197nb_NO
dc.identifierntnudaim:9183nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/241750
dc.description.abstractIn integrity assessments, residual stresses have a significant effect on the crack driving force. In fracture assessments according to BS 7910 residual stresses are treated conservatively, and is often assumed to be equal to the material yield strength. In this work, a finite element model of a cracked steel plate was used to study the contribution to crack driving force from residual stresses. Residual stresses were introduced by the eigenstrain method and nodes were released to create cracks. Crack depths, a, up to 20 mm, crack lengths, 2c, up to 50 mm and through thickness cracks were investigated. Solutions were compared to reference solutions with the same crack dimensions, but no residual stress. Corresponding fracture assessments according to BS 7910 were performed to illustrate the difference in crack driving force between FEM and BS 7910. The dimensionless parameter R, was developed during this work and denotes the effect of residual stresses. R can be computed both for results from FEM and BS 7910. It can be seen that R depend on crack parameters and decrease as load increase. Generally, R is significantly higher for solutions according to BS 7910.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for produktutvikling og materialernb_NO
dc.titleEffect of Residual Stresses on Fracture Resistance of Arctic Structuresnb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber94nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for produktutvikling og materialernb_NO


Tilhørende fil(er)

Thumbnail
Thumbnail
Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel