Effect of material uncertainties on fatigue life calculations of aircraft fuselages: A cohesive element model

P. S. Koutsourelakis; K. Kuntiyawichai; G. I. Schuëller

doi:10.1016/j.engfracmech.2006.01.003

Effect of material uncertainties on fatigue life calculations of aircraft fuselages: A cohesive element model

P. S. Koutsourelakis, K. Kuntiyawichai, G. I. Schuëller

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris' law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zone in combination with an extrapolation scheme that makes the analysis over hundred of thousands of cycles computationally efficient. The effect of randomness in the cohesive strength is examined with respect to the total lifetime of the specimen.

Original language	English
Pages (from-to)	1202-1219
Number of pages	18
Journal	Engineering Fracture Mechanics
Volume	73
Issue number	9
DOIs	https://doi.org/10.1016/j.engfracmech.2006.01.003
State	Published - Jun 2006
Externally published	Yes

Keywords

Cohesive elements
Fatigue
Reliability
Uncertainties

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10.1016/j.engfracmech.2006.01.003

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title = "Effect of material uncertainties on fatigue life calculations of aircraft fuselages: A cohesive element model",

abstract = "The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris' law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zone in combination with an extrapolation scheme that makes the analysis over hundred of thousands of cycles computationally efficient. The effect of randomness in the cohesive strength is examined with respect to the total lifetime of the specimen.",

keywords = "Cohesive elements, Fatigue, Reliability, Uncertainties",

author = "Koutsourelakis, {P. S.} and K. Kuntiyawichai and Schu{\"e}ller, {G. I.}",

note = "Funding Information: This project was supported by the Austrian Science Foundation (FWF) under the contract P16769-N12. K. Kuntiyawichai acknowledges the financial support from the {\"O}sterreichischer Austauschdienst ( {\"O}AD ) for joining research at Institute of Engineering Mechanics, Leopold-Franzens University, Innsbruck, Austria, EU. ",

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AU - Schuëller, G. I.

N1 - Funding Information: This project was supported by the Austrian Science Foundation (FWF) under the contract P16769-N12. K. Kuntiyawichai acknowledges the financial support from the Österreichischer Austauschdienst ( ÖAD ) for joining research at Institute of Engineering Mechanics, Leopold-Franzens University, Innsbruck, Austria, EU.

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N2 - The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris' law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zone in combination with an extrapolation scheme that makes the analysis over hundred of thousands of cycles computationally efficient. The effect of randomness in the cohesive strength is examined with respect to the total lifetime of the specimen.

AB - The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris' law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zone in combination with an extrapolation scheme that makes the analysis over hundred of thousands of cycles computationally efficient. The effect of randomness in the cohesive strength is examined with respect to the total lifetime of the specimen.

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KW - Fatigue

KW - Reliability

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Effect of material uncertainties on fatigue life calculations of aircraft fuselages: A cohesive element model

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Keywords

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