Simulations of Mechanical Response of Superelastic NiTi Helical Spring and its Relation to Fatigue Resistance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00429386" target="_blank" >RIV/68378271:_____/14:00429386 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/14:00429386 RIV/68407700:21340/14:00227902 RIV/49777513:23640/14:43922658

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11665-014-0906-y" target="_blank" >http://dx.doi.org/10.1007/s11665-014-0906-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11665-014-0906-y" target="_blank" >10.1007/s11665-014-0906-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simulations of Mechanical Response of Superelastic NiTi Helical Spring and its Relation to Fatigue Resistance

Popis výsledku v původním jazyce

Behavior of NiTi shape memory alloys under complex loading is still a subject of both experimental and theoretical investigations. One of the simplest geometries, in which the material is loaded in combined mode and which has also several practical applications, is a simple helical spring. In this contribution, mechanical response of NiTi superelastic spring is analyzed in detail by numerical simulation and the results are compared to experiments. The simulations show complex stress state, which develops during spring stretching. Analyzing fatigue tests with respect to simulated behavior allowed us to find relation between fatigue resistance and periodic changes in volume fraction of martensite induced by cyclic mechanical loading. The work also underlines an extension of the range of stroke amplitudes guaranteeing enhanced life performance of the spring when material transforms through the R-phase.

Název v anglickém jazyce

Simulations of Mechanical Response of Superelastic NiTi Helical Spring and its Relation to Fatigue Resistance

Popis výsledku anglicky

Behavior of NiTi shape memory alloys under complex loading is still a subject of both experimental and theoretical investigations. One of the simplest geometries, in which the material is loaded in combined mode and which has also several practical applications, is a simple helical spring. In this contribution, mechanical response of NiTi superelastic spring is analyzed in detail by numerical simulation and the results are compared to experiments. The simulations show complex stress state, which develops during spring stretching. Analyzing fatigue tests with respect to simulated behavior allowed us to find relation between fatigue resistance and periodic changes in volume fraction of martensite induced by cyclic mechanical loading. The work also underlines an extension of the range of stroke amplitudes guaranteeing enhanced life performance of the spring when material transforms through the R-phase.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Engineering and Performance

ISSN

1059-9495

e-ISSN

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Svazek periodika

23

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

2591-2598

Kód UT WoS článku

000339010700045

EID výsledku v databázi Scopus

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