Equations for efficient cycle-by-cycle computation of fatigue crack retardation and acceleration due to amplitude changes
The result's identifiers
Result code in 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>
Alternative codes found
RIV/68081723:_____/24:00588515
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Equations for efficient cycle-by-cycle computation of fatigue crack retardation and acceleration due to amplitude changes
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20306 - Audio engineering, reliability analysis
Result continuities
Project
<a href="/en/project/GA22-28283S" target="_blank" >GA22-28283S: Oxide-induced crack closure and its implications for lifetime prediction of mechanical components (OXILAP)</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Theoretical and Applied Fracture Mechanics
ISSN
0167-8442
e-ISSN
1872-7638
Volume of the periodical
133
Issue of the periodical within the volume
104547
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
„“-„“
UT code for WoS article
001284022900001
EID of the result in the Scopus database
2-s2.0-85197086259