A stress magnification factor for plates with welding-induced curvatures
| openaire: EC/H2020/723246/EU//RAMSSES The fatigue strength of thin-walled structures can be reduced significantly by non-linear secondary bending effects resulting from geometrical imperfections such as axial and angular misalignments. The welding-induced distortions can cause a critical increase...
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/101406 2023-05-15T14:24:45+02:00 A stress magnification factor for plates with welding-induced curvatures Mancini, Federica Remes, Heikki Romanoff, Jani Department of Mechanical Engineering Marine Technology Aalto-yliopisto Aalto University 2020-08 https://aaltodoc.aalto.fi/handle/123456789/101406 en eng info:eu-repo/grantAgreement/EC/H2020/723246/EU//RAMSSES International Conference on Ocean, Offshore and Arctic Engineering Mancini , F , Remes , H & Romanoff , J 2020 , ' A stress magnification factor for plates with welding-induced curvatures ' , Paper presented at International Conference on Ocean, Offshore and Arctic Engineering , Fort Lauderdale , United States , 03/08/2020 - 07/08/2020 . PURE UUID: 14964de8-46f5-4415-a365-4af4265462a2 PURE ITEMURL: https://research.aalto.fi/en/publications/a-stress-magnification-factor-for-plates-with-weldinginduced-curvatures(14964de8-46f5-4415-a365-4af4265462a2).html PURE LINK: https://event.asme.org/OMAE-2020 https://aaltodoc.aalto.fi/handle/123456789/101406 URN:NBN:fi:aalto-2020123160227 closedAccess 216 Materials engineering Stress magnification factor welding distortion thin plate non-linear geometry non-ideal boundary conditions A4 Artikkeli konferenssijulkaisussa 2020 ftaaltouniv 2022-12-15T19:31:53Z | openaire: EC/H2020/723246/EU//RAMSSES The fatigue strength of thin-walled structures can be reduced significantly by non-linear secondary bending effects resulting from geometrical imperfections such as axial and angular misalignments. The welding-induced distortions can cause a critical increase of the structural hot-spot stress in the vicinity of the weld. Traditionally, the classification society rules for the fatigue strength assessment of welded ship structures suggest an analytical formula for a stress magnification factor 푘푚 for axial and angular misalignment under axial loading condition. Recently, the well-known analytical solution for the angular misalignment has been extended to account for the curvature effect. The present paper analyses the effect of non-ideal, intermediate boundary conditions between fixed and pinned ends. In this regard, the fixity factors ρ (with 0 ≤ 휌 ≤ 1 from ideally pinned to clamped conditions) are introduced in order to model the actual constraint on the rotation close to the ends. Under tension, a non-negligible decrease of the 푘푚 factor is observed in relation to the reduction of the fixity factor at the welded end, while the fixity factor related to the loaded end has a minor effect on the 푘푚 factor. Under compression, the reduction of the beam end fixity factors results into lower buckling resistance. Peer reviewed Other/Unknown Material Arctic Aalto University Publication Archive (Aaltodoc) |
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Open Polar |
collection |
Aalto University Publication Archive (Aaltodoc) |
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ftaaltouniv |
language |
English |
topic |
216 Materials engineering Stress magnification factor welding distortion thin plate non-linear geometry non-ideal boundary conditions |
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216 Materials engineering Stress magnification factor welding distortion thin plate non-linear geometry non-ideal boundary conditions Mancini, Federica Remes, Heikki Romanoff, Jani A stress magnification factor for plates with welding-induced curvatures |
topic_facet |
216 Materials engineering Stress magnification factor welding distortion thin plate non-linear geometry non-ideal boundary conditions |
description |
| openaire: EC/H2020/723246/EU//RAMSSES The fatigue strength of thin-walled structures can be reduced significantly by non-linear secondary bending effects resulting from geometrical imperfections such as axial and angular misalignments. The welding-induced distortions can cause a critical increase of the structural hot-spot stress in the vicinity of the weld. Traditionally, the classification society rules for the fatigue strength assessment of welded ship structures suggest an analytical formula for a stress magnification factor 푘푚 for axial and angular misalignment under axial loading condition. Recently, the well-known analytical solution for the angular misalignment has been extended to account for the curvature effect. The present paper analyses the effect of non-ideal, intermediate boundary conditions between fixed and pinned ends. In this regard, the fixity factors ρ (with 0 ≤ 휌 ≤ 1 from ideally pinned to clamped conditions) are introduced in order to model the actual constraint on the rotation close to the ends. Under tension, a non-negligible decrease of the 푘푚 factor is observed in relation to the reduction of the fixity factor at the welded end, while the fixity factor related to the loaded end has a minor effect on the 푘푚 factor. Under compression, the reduction of the beam end fixity factors results into lower buckling resistance. Peer reviewed |
author2 |
Department of Mechanical Engineering Marine Technology Aalto-yliopisto Aalto University |
format |
Other/Unknown Material |
author |
Mancini, Federica Remes, Heikki Romanoff, Jani |
author_facet |
Mancini, Federica Remes, Heikki Romanoff, Jani |
author_sort |
Mancini, Federica |
title |
A stress magnification factor for plates with welding-induced curvatures |
title_short |
A stress magnification factor for plates with welding-induced curvatures |
title_full |
A stress magnification factor for plates with welding-induced curvatures |
title_fullStr |
A stress magnification factor for plates with welding-induced curvatures |
title_full_unstemmed |
A stress magnification factor for plates with welding-induced curvatures |
title_sort |
stress magnification factor for plates with welding-induced curvatures |
publishDate |
2020 |
url |
https://aaltodoc.aalto.fi/handle/123456789/101406 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/723246/EU//RAMSSES International Conference on Ocean, Offshore and Arctic Engineering Mancini , F , Remes , H & Romanoff , J 2020 , ' A stress magnification factor for plates with welding-induced curvatures ' , Paper presented at International Conference on Ocean, Offshore and Arctic Engineering , Fort Lauderdale , United States , 03/08/2020 - 07/08/2020 . PURE UUID: 14964de8-46f5-4415-a365-4af4265462a2 PURE ITEMURL: https://research.aalto.fi/en/publications/a-stress-magnification-factor-for-plates-with-weldinginduced-curvatures(14964de8-46f5-4415-a365-4af4265462a2).html PURE LINK: https://event.asme.org/OMAE-2020 https://aaltodoc.aalto.fi/handle/123456789/101406 URN:NBN:fi:aalto-2020123160227 |
op_rights |
closedAccess |
_version_ |
1766297221436801024 |