Equations for efficient cycle-by-cycle computation of fatigue crack retardation and acceleration due to amplitude changes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU151924" target="_blank" >RIV/00216305:26210/24:PU151924 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68081723:_____/24:00588515
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0167844224002969" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167844224002969</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tafmec.2024.104547" target="_blank" >10.1016/j.tafmec.2024.104547</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Equations for efficient cycle-by-cycle computation of fatigue crack retardation and acceleration due to amplitude changes
Popis výsledku v původním jazyce
The paper presents an efficient methodology for computation of the evolution of the fatigue crack retardation and acceleration effects due to crack closure during variable amplitude loading. The presented approach can lead to a very effective tool for estimation of residual fatigue life of engineering structures. Conventionally, consideration of variable-amplitude loading is either computationally too demanding, such as in finite element modelling, or challenging to unify the strip-yield model with another computational code. The simple analytical formulae available in literature are based on residual stress, which does not describe correctly the delayed retardation effect and in some cases it can be non-conservative. This work presents simple analytical equations describing the development of the crack closure based on the results of the strip-yield model for amplitude changes at the load ratio R = 0.1. The parabolic function enables simple computation of the maximum crack closure occurring after an overload without running any simulation. The equations also enable computation of crack closure behaviour following amplitude changes with the consideration of various cyclic material properties reflected in the tuneable ratio between the monotonic and cyclic plastic zone sizes.
Název v anglickém jazyce
Equations for efficient cycle-by-cycle computation of fatigue crack retardation and acceleration due to amplitude changes
Popis výsledku anglicky
The paper presents an efficient methodology for computation of the evolution of the fatigue crack retardation and acceleration effects due to crack closure during variable amplitude loading. The presented approach can lead to a very effective tool for estimation of residual fatigue life of engineering structures. Conventionally, consideration of variable-amplitude loading is either computationally too demanding, such as in finite element modelling, or challenging to unify the strip-yield model with another computational code. The simple analytical formulae available in literature are based on residual stress, which does not describe correctly the delayed retardation effect and in some cases it can be non-conservative. This work presents simple analytical equations describing the development of the crack closure based on the results of the strip-yield model for amplitude changes at the load ratio R = 0.1. The parabolic function enables simple computation of the maximum crack closure occurring after an overload without running any simulation. The equations also enable computation of crack closure behaviour following amplitude changes with the consideration of various cyclic material properties reflected in the tuneable ratio between the monotonic and cyclic plastic zone sizes.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20306 - Audio engineering, reliability analysis
Návaznosti výsledku
Projekt
<a href="/cs/project/GA22-28283S" target="_blank" >GA22-28283S: Oxidy indukované zavírání trhliny a jeho dopady na únavovou životnost mechanických komponent (OXILAP)</a><br>
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Theoretical and Applied Fracture Mechanics
ISSN
0167-8442
e-ISSN
1872-7638
Svazek periodika
133
Číslo periodika v rámci svazku
104547
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
13
Strana od-do
„“-„“
Kód UT WoS článku
001284022900001
EID výsledku v databázi Scopus
2-s2.0-85197086259