Integral failure criteria in numerical low-temperature strength calculations of marine facilities
Object and purpose of research. This paper studies welded structures of marine facilities operating at the temperature of -40 °С and lower. To justify necessary strength margins, new international and Russian standards for strength and reliability of Arctic oil & gas facilities require ultimate...
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ftdoajarticles:oai:doaj.org/article:e24337f793f54dab87278759ff6607c4 2023-05-15T15:01:48+02:00 Integral failure criteria in numerical low-temperature strength calculations of marine facilities Gennady B. Kryzhevich 2018-02-01T00:00:00Z https://doi.org/10.24937/2542-2324-2018-1-383-29-42 https://doaj.org/article/e24337f793f54dab87278759ff6607c4 EN RU eng rus Krylov State Research Centre http://transactions-ksrc.ru/eng/archive/Integral-failure-criteria-in-numerical-low-temperature-strength-calculations-of-marine-facilities/ https://doaj.org/toc/2542-2324 https://doaj.org/toc/2618-8244 2542-2324 2618-8244 doi:10.24937/2542-2324-2018-1-383-29-42 https://doaj.org/article/e24337f793f54dab87278759ff6607c4 Труды Крыловского государственного научного центра, Vol 383, Iss 1, Pp 29-42 (2018) limit structural strength strength criteria strength of Arctic marine facilities low-temperature strength cold resistance of structures Naval architecture. Shipbuilding. Marine engineering VM1-989 article 2018 ftdoajarticles https://doi.org/10.24937/2542-2324-2018-1-383-29-42 2022-12-31T00:58:50Z Object and purpose of research. This paper studies welded structures of marine facilities operating at the temperature of -40 °С and lower. To justify necessary strength margins, new international and Russian standards for strength and reliability of Arctic oil & gas facilities require ultimate structural strength calculations taking into account possible deteriorationin plasticity and fracture resistance of materials and welds. However, these requirements still cannot be implemented because, as yet, there is still no answer to the fundamental question: how to formulate failure criteria when structure comes to its limit state? Along with it, current regulations of Classification societies about fracture resistance of welds for these structures usually cannot be fulfilled due to a number of technological and economic reasons, and the formalist approach to this matter implicates prohibition for these structures to operate at low temperatures. The purpose of this study is to develop criteria of brittle and ductile strength at low temperatures, so as to solve key questions about limit strength of welded structures, based on a new procedure of direct FEM-based static strength calculation of welded structures taking into account realistically achievable fracture resistance and plasticity levels of the material used in welds. Materials and methods. Strength calculation method envisages FEM-based procedures in combination with verification methods for strength of steel structures as per integral criteria of brittle failure and limit plastic straining.Main results. Integral brittle and ductile failure criteria developed in this study are intended for limit structural strength assessments. It has been shown that these new integral criteria for limit strength considerably increase accuracy of calculations and ensure proper selection of materials, manufacturing technologies and optimal design of marine structures operating at low temperatures. Conclusion. Newly developed brittle and ductile failure criteria for ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Transactions of the Krylov State Research Centre 1 383 29 42 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
limit structural strength strength criteria strength of Arctic marine facilities low-temperature strength cold resistance of structures Naval architecture. Shipbuilding. Marine engineering VM1-989 |
spellingShingle |
limit structural strength strength criteria strength of Arctic marine facilities low-temperature strength cold resistance of structures Naval architecture. Shipbuilding. Marine engineering VM1-989 Gennady B. Kryzhevich Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
topic_facet |
limit structural strength strength criteria strength of Arctic marine facilities low-temperature strength cold resistance of structures Naval architecture. Shipbuilding. Marine engineering VM1-989 |
description |
Object and purpose of research. This paper studies welded structures of marine facilities operating at the temperature of -40 °С and lower. To justify necessary strength margins, new international and Russian standards for strength and reliability of Arctic oil & gas facilities require ultimate structural strength calculations taking into account possible deteriorationin plasticity and fracture resistance of materials and welds. However, these requirements still cannot be implemented because, as yet, there is still no answer to the fundamental question: how to formulate failure criteria when structure comes to its limit state? Along with it, current regulations of Classification societies about fracture resistance of welds for these structures usually cannot be fulfilled due to a number of technological and economic reasons, and the formalist approach to this matter implicates prohibition for these structures to operate at low temperatures. The purpose of this study is to develop criteria of brittle and ductile strength at low temperatures, so as to solve key questions about limit strength of welded structures, based on a new procedure of direct FEM-based static strength calculation of welded structures taking into account realistically achievable fracture resistance and plasticity levels of the material used in welds. Materials and methods. Strength calculation method envisages FEM-based procedures in combination with verification methods for strength of steel structures as per integral criteria of brittle failure and limit plastic straining.Main results. Integral brittle and ductile failure criteria developed in this study are intended for limit structural strength assessments. It has been shown that these new integral criteria for limit strength considerably increase accuracy of calculations and ensure proper selection of materials, manufacturing technologies and optimal design of marine structures operating at low temperatures. Conclusion. Newly developed brittle and ductile failure criteria for ... |
format |
Article in Journal/Newspaper |
author |
Gennady B. Kryzhevich |
author_facet |
Gennady B. Kryzhevich |
author_sort |
Gennady B. Kryzhevich |
title |
Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
title_short |
Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
title_full |
Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
title_fullStr |
Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
title_full_unstemmed |
Integral failure criteria in numerical low-temperature strength calculations of marine facilities |
title_sort |
integral failure criteria in numerical low-temperature strength calculations of marine facilities |
publisher |
Krylov State Research Centre |
publishDate |
2018 |
url |
https://doi.org/10.24937/2542-2324-2018-1-383-29-42 https://doaj.org/article/e24337f793f54dab87278759ff6607c4 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Труды Крыловского государственного научного центра, Vol 383, Iss 1, Pp 29-42 (2018) |
op_relation |
http://transactions-ksrc.ru/eng/archive/Integral-failure-criteria-in-numerical-low-temperature-strength-calculations-of-marine-facilities/ https://doaj.org/toc/2542-2324 https://doaj.org/toc/2618-8244 2542-2324 2618-8244 doi:10.24937/2542-2324-2018-1-383-29-42 https://doaj.org/article/e24337f793f54dab87278759ff6607c4 |
op_doi |
https://doi.org/10.24937/2542-2324-2018-1-383-29-42 |
container_title |
Transactions of the Krylov State Research Centre |
container_volume |
1 |
container_issue |
383 |
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29 |
op_container_end_page |
42 |
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1766333806728445952 |