Evolution control of cyclic softening of Inconel 718 under isothermal low-cycle fatigue loading by improved calculation of accumulated plastic strain

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00384524" target="_blank" >RIV/68407700:21220/25:00384524 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.ijpvp.2025.105583" target="_blank" >https://doi.org/10.1016/j.ijpvp.2025.105583</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijpvp.2025.105583" target="_blank" >10.1016/j.ijpvp.2025.105583</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evolution control of cyclic softening of Inconel 718 under isothermal low-cycle fatigue loading by improved calculation of accumulated plastic strain

Popis výsledku v původním jazyce

In this article, the approach for modelling the stress-strain response of Inconel 718 superalloy under isothermal Low-Cycle Fatigue (LCF) loading using the Prandtl operator approach is improved by introducing an enhanced evolution control of cyclic softening. The proposed improvement consists of an extended calculation of the accumulated plastic strain which now involves an energy conservation step during the calculation. The simulation power of the Prandtl model is especially improved in the area of increasing low plastic strain range magnitudes which are consistently evolving without regard to the variably changing loading regime. The prediction capability of the proposed model is demonstrated especially for block load tests where the highest discrepancies have been observed before the improvement. Evaluation of the agreement between the experimental observations and the simulations shows up to 6 % better agreement using the improved evolution control of cyclic softening.

Název v anglickém jazyce

Evolution control of cyclic softening of Inconel 718 under isothermal low-cycle fatigue loading by improved calculation of accumulated plastic strain

Popis výsledku anglicky

In this article, the approach for modelling the stress-strain response of Inconel 718 superalloy under isothermal Low-Cycle Fatigue (LCF) loading using the Prandtl operator approach is improved by introducing an enhanced evolution control of cyclic softening. The proposed improvement consists of an extended calculation of the accumulated plastic strain which now involves an energy conservation step during the calculation. The simulation power of the Prandtl model is especially improved in the area of increasing low plastic strain range magnitudes which are consistently evolving without regard to the variably changing loading regime. The prediction capability of the proposed model is demonstrated especially for block load tests where the highest discrepancies have been observed before the improvement. Evaluation of the agreement between the experimental observations and the simulations shows up to 6 % better agreement using the improved evolution control of cyclic softening.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA21-06645S" target="_blank" >GA21-06645S: Výzkum životnosti strojních součástí při víceosém teplotně-mechanickém zatěžování s proměnnou amplitudou</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

International Journal of Pressure Vessels and Piping

ISSN

0308-0161

e-ISSN

1879-3541

Svazek periodika

218

Číslo periodika v rámci svazku

105583

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001524394700001

EID výsledku v databázi Scopus

2-s2.0-105009341907