Publication detail
Simulation of Fatigue Crack Growth in the High Speed Machined Panel under the Constant Amplitude and Spectrum Loading
AUGUSTIN, P.
Czech title
Simulace šíření únavové trhliny ve vysokorychlostně obráběném panelu při zatěžování konstantní amplitudou a spektrem
English title
Simulation of Fatigue Crack Growth in the High Speed Machined Panel under the Constant Amplitude and Spectrum Loading
Type
conference paper
Language
en
Original abstract
The paper describes methodology of numerical simulation of fatigue crack growth under the constant amplitude and spectrum loading and its application on integrally stiffened panels made of 2024-T351 aluminium alloy using high speed cutting technique. Presented approach is based on the calculation of stress intensity factor function from finite element results, subsequent crack growth analyses were performed in NASGRO. For predictions of crack growth under the spectrum loading a sequence representing service loading of the transport airplane wing was prepared. Three crack growth models were applied: non-interaction, Willenborg and Strip Yield. Relatively large experimental program comprising both the constant amplitude and spectrum tests on integral panels and CCT specimens was undertaken in order to acquire crack growth rate data and enable verification of simulations.
Czech abstract
Příspěvek se zabývá numerickou simulací šíření únavové trhliny v integrálním vyztuženém panelu křídla vyrobeném vysokorychlostním obráběním ze slitiny 2024-T351 při zatěžování konstantním cyklem i poryvovým spektrem dopravního letounu uspořádaným do sekvence simulující jeho reálný provoz. Použitá metodika využívá MKP pro stanovení součinitele intenzity napětí, navazující výpočet šíření trhliny je proveden v programu NASGRO (non-interaction, Willenborgův a strip-yield model). Pro verifikaci výpočtů byly uskutečněny únavové zkoušky integrálních panelů a CCT vzorků.
English abstract
The paper describes methodology of numerical simulation of fatigue crack growth under the constant amplitude and spectrum loading and its application on integrally stiffened panels made of 2024-T351 aluminium alloy using high speed cutting technique. Presented approach is based on the calculation of stress intensity factor function from finite element results, subsequent crack growth analyses were performed in NASGRO. For predictions of crack growth under the spectrum loading a sequence representing service loading of the transport airplane wing was prepared. Three crack growth models were applied: non-interaction, Willenborg and Strip Yield. Relatively large experimental program comprising both the constant amplitude and spectrum tests on integral panels and CCT specimens was undertaken in order to acquire crack growth rate data and enable verification of simulations.
Keywords in Czech
únava, lomová mechanika, šíření trhliny, spektrum zatížení, integrální vyztužený panel
Keywords in English
fatigue, fracture mechanics, crack growth, spectrum loading, integrally stiffened panels
RIV year
2009
Released
27.05.2009
Publisher
Springer Science+Business Media
Location
Dodrecht
ISBN
978-90-481-2745-0
Book
Proceedings of the 25th Symposium of the International Committee on Aeronautical Fatigue
Pages from–to
1005–1018
Pages count
14
BIBTEX
@inproceedings{BUT33052,
author="Petr {Augustin},
title="Simulation of Fatigue Crack Growth in the High Speed Machined Panel under the Constant Amplitude and Spectrum Loading",
booktitle="Proceedings of the 25th Symposium of the International Committee on Aeronautical Fatigue",
year="2009",
month="May",
pages="1005--1018",
publisher="Springer Science+Business Media",
address="Dodrecht",
isbn="978-90-481-2745-0"
}