Počet záznamů: 1
Numerical estimation of the fatigue crack front shape for a specimen with finite thickness
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SYSNO ASEP 0385371 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Numerical estimation of the fatigue crack front shape for a specimen with finite thickness Tvůrce(i) Ševčík, Martin (UFM-A) RID
Hutař, Pavel (UFM-A) RID, ORCID
Zouhar, Michal (UFM-A)
Náhlík, Luboš (UFM-A) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. International Journal of Fatigue. - : Elsevier - ISSN 0142-1123
Roč. 39, č. 1 (2012), s. 75-80Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Crack front shape ; Vertex singularity ; Fatigue crack ; Stress singularity exponent Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GA101/09/0867 GA ČR - Grantová agentura ČR GA106/09/1954 GA ČR - Grantová agentura ČR CEZ AV0Z2041904 - UFM-A UT WOS 000301684400012 DOI 10.1016/j.ijfatigue.2011.03.010 Anotace An iterative process for the estimation of a fatigue crack front based on linear elastic fracture mechanics using values of the stress singularity exponent is presented. Based on the assumption of a constant stress singularity exponent along the crack front, a numerical approach leading to crack shape determination is suggested and applied. The crack front was approximated by a spline curve. In each node defining the crack front the stress singularity exponent was estimated and a complete crack front shape was found. The difference between thin and thick specimens is then described and discussed. The approach presented leads to better estimation of the crack front shape for structures with different thicknesses and a more accurate determination of fatigue crack fracture parameters. The results presented can be helpful for a better understanding of fatigue failure and more reliable prediction of residual lifetime. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1