Zkoušky na miniaturních discích a jejich modelování při podmínkách konstantního zatížení

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00324093" target="_blank" >RIV/68081723:_____/08:00324093 - 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

Small Punch Testing and Its Numerical Simulations under Constant Force Conditions

Popis výsledku v původním jazyce

Comparison of results of small punch tests on miniaturized discs under constant force with their simulation by means of FEM is presented. Heat resistant steel of type CSN 41 5313 (EN 10CrMo9-10) was selected for our investigations. Small punch tests as well as necessary conventional creep tests on massive specimens were performed at 873 K. For simulations, the Norton power-law and the exponential relationships were applied in the FEM model of the SPT arrangement. Parameters of both relationships were derived from stress dependences of minimum creep rate obtained from conventional creep tests. While at higher loads the Norton power-law yields results more comparable with those obtained from experiments, at lower loads the exponential relationship givesbetter results. Investigation also confirms the simple relation between stress in conventional tests and force in small punch tests resulting in identical time to fracture of both types of tests.

Název v anglickém jazyce

Small Punch Testing and Its Numerical Simulations under Constant Force Conditions

Popis výsledku anglicky

Comparison of results of small punch tests on miniaturized discs under constant force with their simulation by means of FEM is presented. Heat resistant steel of type CSN 41 5313 (EN 10CrMo9-10) was selected for our investigations. Small punch tests as well as necessary conventional creep tests on massive specimens were performed at 873 K. For simulations, the Norton power-law and the exponential relationships were applied in the FEM model of the SPT arrangement. Parameters of both relationships were derived from stress dependences of minimum creep rate obtained from conventional creep tests. While at higher loads the Norton power-law yields results more comparable with those obtained from experiments, at lower loads the exponential relationship givesbetter results. Investigation also confirms the simple relation between stress in conventional tests and force in small punch tests resulting in identical time to fracture of both types of tests.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Problemy pročnosti (Strength of Materials)

ISSN

0556-171X

e-ISSN

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Svazek periodika

391

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

UA - Ukrajina

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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