Computational Assesment of Remaining Load Carrying Capacity of Pipes with Areal Surface Defects

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F09%3A00161489" target="_blank" >RIV/68407700:21220/09:00161489 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Computational Assesment of Remaining Load Carrying Capacity of Pipes with Areal Surface Defects

Popis výsledku v původním jazyce

This paper reports on two criteria for burst pressure prediction of pipe with the areal surface defect. The criteria deal with defects in internally pressured pipes without significant global bending loads. On the basis of the experimental analysis relatively simple methodologies of prediction were designed. They are based on finite element (FE) analysis. Concept of presented methodologies is based on similarity of stress, strain and material state when plastic collapse starts in the defect domain. Thesimilarity is expressed in terms of simple one-parametric criteria: (i) geometry and topology of the domain at which the plastic state of material is reached, (ii) amount of specific energy dissipated by plastic deformation in the regions, where the ratio of energy dissipated by plastic deformation compared to elastic stress energy is too high. Calibration of these methodologies is based on burst tests of DN800 pipes made of X60 steel with artificial defects.

Název v anglickém jazyce

Computational Assesment of Remaining Load Carrying Capacity of Pipes with Areal Surface Defects

Popis výsledku anglicky

This paper reports on two criteria for burst pressure prediction of pipe with the areal surface defect. The criteria deal with defects in internally pressured pipes without significant global bending loads. On the basis of the experimental analysis relatively simple methodologies of prediction were designed. They are based on finite element (FE) analysis. Concept of presented methodologies is based on similarity of stress, strain and material state when plastic collapse starts in the defect domain. Thesimilarity is expressed in terms of simple one-parametric criteria: (i) geometry and topology of the domain at which the plastic state of material is reached, (ii) amount of specific energy dissipated by plastic deformation in the regions, where the ratio of energy dissipated by plastic deformation compared to elastic stress energy is too high. Calibration of these methodologies is based on burst tests of DN800 pipes made of X60 steel with artificial defects.

Druh

D - Stať ve sborníku

CEP obor

JR - Ostatní strojírenství

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI1%2F458" target="_blank" >FR-TI1/458: Koncový stupeň parní turbíny s vysokou účinností a průtočností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the ASME Pressure Vessels and Piping Conference

ISBN

978-0-7918-3854-9

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

American Society Of Mechanical Engineers - ASME

Místo vydání

New York

Místo konání akce

Praha

Datum konání akce

26. 7. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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