Levold et al 2013a - Revision history

Scipediacontent at 21:19, 28 January 2021

2021-01-28T21:19:24Z

Scipediacontent: Scipediacontent moved page Draft Content 325187962 to Levold et al 2013a

2021-01-21T12:52:16Z

Scipediacontent moved page Draft Content 325187962 to Levold et al 2013a

Scipediacontent: Created page with " == Abstract == Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating..."

2021-01-21T12:52:13Z

Created page with " == Abstract == Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating..."

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== Abstract ==

Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating a complex stress and strain history. In this study experiments and numerical simulations have been carried out to investigate the impact of a pipeline which is subsequently hooked and released. Material and component tests have been performed to investigate the behaviour during impact, and to observe if/when fracture occurs. The pipes were first impacted in a pendulum accelerator at varying velocities before they were pulled straight in a tension machine. Fracture was found in the impacted area of all the pipes during straightening. Material tests were done to determine the characteristics of the X65 grade steel. Numerical simulations showed excellent compliance with the impact phase, while the load level in the stretching phase was a bit overestimated.Copyright Â© 2013 by ASME

== Original document ==

The different versions of the original document can be found in:

* [http://hdl.handle.net/11250/2484077 http://hdl.handle.net/11250/2484077]

* [http://pdfs.semanticscholar.org/f68f/d2a009fec3be29293d37159e1dd590718cb5.pdf http://pdfs.semanticscholar.org/f68f/d2a009fec3be29293d37159e1dd590718cb5.pdf]

* [http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2013-11277/4427207/v02bt02a034-omae2013-11277.pdf http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2013-11277/4427207/v02bt02a034-omae2013-11277.pdf],
: [http://dx.doi.org/10.1115/omae2013-11277 http://dx.doi.org/10.1115/omae2013-11277]

* [http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1786182 http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1786182],
: [https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2013/55331/V02BT02A034/270514 https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2013/55331/V02BT02A034/270514],
: [https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1786182 https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1786182],
: [https://brage.bibsys.no/xmlui/handle/11250/2484077 https://brage.bibsys.no/xmlui/handle/11250/2484077],
: [https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2484077 https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2484077],
: [https://academic.microsoft.com/#/detail/2085836197 https://academic.microsoft.com/#/detail/2085836197]

← Older revision		Revision as of 21:19, 28 January 2021
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	== Abstract ==		== Abstract ==

−	Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating a complex stress and strain history. In this study experiments and numerical simulations have been carried out to investigate the impact of a pipeline which is subsequently hooked and released. Material and component tests have been performed to investigate the behaviour during impact, and to observe if/when fracture occurs. The pipes were first impacted in a pendulum accelerator at varying velocities before they were pulled straight in a tension machine. Fracture was found in the impacted area of all the pipes during straightening. Material tests were done to determine the characteristics of the X65 grade steel. Numerical simulations showed excellent compliance with the impact phase, while the load level in the stretching phase was a bit overestimated.Copyright Â© 2013 by ASME	+	Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating a complex stress and strain history. In this study experiments and numerical simulations have been carried out to investigate the impact of a pipeline which is subsequently hooked and released. Material and component tests have been performed to investigate the behaviour during impact, and to observe if/when fracture occurs. The pipes were first impacted in a pendulum accelerator at varying velocities before they were pulled straight in a tension machine. Fracture was found in the impacted area of all the pipes during straightening. Material tests were done to determine the characteristics of the X65 grade steel. Numerical simulations showed excellent compliance with the impact phase, while the load level in the stretching phase was a bit overestimated.Copyright © 2013 by ASME

← Older revision	Revision as of 12:52, 21 January 2021
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