Walkers Approach and its Modification in the Haigh Diagram Construction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F02%3APU36547" target="_blank" >RIV/00216305:26210/02:PU36547 - 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

Walkers Approach and its Modification in the Haigh Diagram Construction

Popis výsledku v původním jazyce

Walkers Approach of the description of the influence of loading cycle asymmetry in the high-cycle region consists in multiplying by a factor of Pm where P is one of used asymmetry parameters, defined by the quotien of maximum stress and stress amplitude.This approach can be relatively simply generalized also for low-cycle region as shown by the authors last year. Certain difficulty appears for high values parameter P when an unacceptable relation UTS < sigma c Pm (sigma c means fatigue limit) can be obbtained. It has a very unpleasant consequence in the High diagram construction: the curve does not cross the UTS value on mean stress axis as asked. The paper proposes a modification which is identical with walkers approach for lower values of asymmetryparameter P and, on the other hand, does not allow to overstep the UTS value for high values of parameter P. The advantage of this modification is best presented in the Haigh diagram.

Název v anglickém jazyce

Walkers Approach and its Modification in the Haigh Diagram Construction

Popis výsledku anglicky

Walkers Approach of the description of the influence of loading cycle asymmetry in the high-cycle region consists in multiplying by a factor of Pm where P is one of used asymmetry parameters, defined by the quotien of maximum stress and stress amplitude.This approach can be relatively simply generalized also for low-cycle region as shown by the authors last year. Certain difficulty appears for high values parameter P when an unacceptable relation UTS < sigma c Pm (sigma c means fatigue limit) can be obbtained. It has a very unpleasant consequence in the High diagram construction: the curve does not cross the UTS value on mean stress axis as asked. The paper proposes a modification which is identical with walkers approach for lower values of asymmetryparameter P and, on the other hand, does not allow to overstep the UTS value for high values of parameter P. The advantage of this modification is best presented in the Haigh diagram.

Druh

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

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F03%2F1265" target="_blank" >GA106/03/1265: Vliv vybraných faktorů na únavové vlastnosti izotermicky zušlechtěné tvárné litiny</a><br>

Návaznosti

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

Rok uplatnění

2002

Kód důvěrnosti údajů

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

Název periodika

Zeszyty naukowe politechniki Opolskiej seria Mechanika

ISSN

1429-6055

e-ISSN

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Svazek periodika

17

Číslo periodika v rámci svazku

288/2002,

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

77-80

Kód UT WoS článku

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EID výsledku v databázi Scopus

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