Fatigue testing of metric bolts fitted with lip-type nuts
The paper addresses the effect of the external shape of lip-type nuts on the fatigue strength of commercial M10 bolts loaded in tension. Evolving from the standard configuration, six nut geometries are compared, characterized by lips of different shape (cylindrical, tapered or both) and length. Test...
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ftunivmodena:oai:iris.unimore.it:11380/1250137 2024-02-11T09:59:12+01:00 Fatigue testing of metric bolts fitted with lip-type nuts Dragoni E. Dragoni, E. 1994 http://hdl.handle.net/11380/1250137 eng eng Publ by ASME place:New York, NY, United States ispartofbook:Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE Proceedings of the 13th International Conference on Offshore Mechanics and Arctic Engineering volume:3 firstpage:229 lastpage:233 http://hdl.handle.net/11380/1250137 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0028202024 info:eu-repo/semantics/conferenceObject 1994 ftunivmodena 2024-01-23T23:24:53Z The paper addresses the effect of the external shape of lip-type nuts on the fatigue strength of commercial M10 bolts loaded in tension. Evolving from the standard configuration, six nut geometries are compared, characterized by lips of different shape (cylindrical, tapered or both) and length. Testing and statistical treatment of the data are performed in accordance with a JSME standard involving 14 specimens for each geometry. Within the class of merely cylindrical lips, only limited advantages over the standard assembly are detected. In particular, the bolt strength remains mostly unaffected by lengthening of the lip beyond one third of the nut height. Conversely, tapering of the lip end so as to thin its wall around the entry section of the bolt results in substantial improvements. In this case, the strength increase is roughly proportional to the taper length. Adoption of a tapered lip covering two thirds of the nut height enhances the bolt strength by about one fourth with respect to the standard geometry. Conference Object Arctic Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
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Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
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ftunivmodena |
language |
English |
description |
The paper addresses the effect of the external shape of lip-type nuts on the fatigue strength of commercial M10 bolts loaded in tension. Evolving from the standard configuration, six nut geometries are compared, characterized by lips of different shape (cylindrical, tapered or both) and length. Testing and statistical treatment of the data are performed in accordance with a JSME standard involving 14 specimens for each geometry. Within the class of merely cylindrical lips, only limited advantages over the standard assembly are detected. In particular, the bolt strength remains mostly unaffected by lengthening of the lip beyond one third of the nut height. Conversely, tapering of the lip end so as to thin its wall around the entry section of the bolt results in substantial improvements. In this case, the strength increase is roughly proportional to the taper length. Adoption of a tapered lip covering two thirds of the nut height enhances the bolt strength by about one fourth with respect to the standard geometry. |
author2 |
Dragoni, E. |
format |
Conference Object |
author |
Dragoni E. |
spellingShingle |
Dragoni E. Fatigue testing of metric bolts fitted with lip-type nuts |
author_facet |
Dragoni E. |
author_sort |
Dragoni E. |
title |
Fatigue testing of metric bolts fitted with lip-type nuts |
title_short |
Fatigue testing of metric bolts fitted with lip-type nuts |
title_full |
Fatigue testing of metric bolts fitted with lip-type nuts |
title_fullStr |
Fatigue testing of metric bolts fitted with lip-type nuts |
title_full_unstemmed |
Fatigue testing of metric bolts fitted with lip-type nuts |
title_sort |
fatigue testing of metric bolts fitted with lip-type nuts |
publisher |
Publ by ASME |
publishDate |
1994 |
url |
http://hdl.handle.net/11380/1250137 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
ispartofbook:Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE Proceedings of the 13th International Conference on Offshore Mechanics and Arctic Engineering volume:3 firstpage:229 lastpage:233 http://hdl.handle.net/11380/1250137 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0028202024 |
_version_ |
1790595163663368192 |