Model of Fatigue life Degradation of Crankshaft

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18440%2F18%3A50015070" target="_blank" >RIV/62690094:18440/18:50015070 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.wseas.org/multimedia/journals/mechanics/2018/a385111-097.pdf" target="_blank" >http://www.wseas.org/multimedia/journals/mechanics/2018/a385111-097.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Model of Fatigue life Degradation of Crankshaft

Popis výsledku v původním jazyce

This article is dedicated to modeling and simulation of fatigue degradation of crankshaft. In this article is discussed model of crankshaft which is damaged during its service life. Specially authors consider in their work the fatigue damage influenced by the vibration during traffic. The fatigue damage is considerable problem in engineering and can cause catastrophic accidents, also this accidents can caused fatal injury of personnel. The crankshafts are subjected to the intensive multiaxial loading during its working life and crankshaft failure is much more frequent cause of the accident, during the engine service parts except cylinder rupture. Therefore great effort is devout to the fatigue resistance improvement and proper method of fatigue life modeling. In recent work, relatively new approach for fatigue crack modeling is discussed and its application on specific problem of crankshaft in four cylinder engine. Experimental part of this study is based on measurement of vibration on the crankshaft. The experimental device was used with down-scaled model of engine to reveal influence of vibration. The majority of fatigue crack models are working with predefined boundary length of crack. This length makes possible to distinguish between the different phases of crack growth, i.e. different crack growth mechanism. The method used in this work is based on another approach. The fatigue crack is simulated in this way: (1) the crack grew throughout the whole crankshaft volume controlled by nucleation mechanism, (2) by propagation mechanism. Thus two different fatigue curves are obtained and merged in one final fatigue curve. This method is in compliance with data obtained experimentally.

Název v anglickém jazyce

Model of Fatigue life Degradation of Crankshaft

Popis výsledku anglicky

This article is dedicated to modeling and simulation of fatigue degradation of crankshaft. In this article is discussed model of crankshaft which is damaged during its service life. Specially authors consider in their work the fatigue damage influenced by the vibration during traffic. The fatigue damage is considerable problem in engineering and can cause catastrophic accidents, also this accidents can caused fatal injury of personnel. The crankshafts are subjected to the intensive multiaxial loading during its working life and crankshaft failure is much more frequent cause of the accident, during the engine service parts except cylinder rupture. Therefore great effort is devout to the fatigue resistance improvement and proper method of fatigue life modeling. In recent work, relatively new approach for fatigue crack modeling is discussed and its application on specific problem of crankshaft in four cylinder engine. Experimental part of this study is based on measurement of vibration on the crankshaft. The experimental device was used with down-scaled model of engine to reveal influence of vibration. The majority of fatigue crack models are working with predefined boundary length of crack. This length makes possible to distinguish between the different phases of crack growth, i.e. different crack growth mechanism. The method used in this work is based on another approach. The fatigue crack is simulated in this way: (1) the crack grew throughout the whole crankshaft volume controlled by nucleation mechanism, (2) by propagation mechanism. Thus two different fatigue curves are obtained and merged in one final fatigue curve. This method is in compliance with data obtained experimentally.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

WSEAS transactions on applied and theoretical mechanics

ISSN

1991-8747

e-ISSN

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Svazek periodika

13

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

GR - Řecká republika

Počet stran výsledku

6

Strana od-do

175-180

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85061289371