Numerical Inspection based on Quasi-Static Analysis using Rousselier Damage Model for Aluminium Wingbox Aircraft Structure

The present paper illustrates a modelling technique of void damage prediction using constitutive Rousselier damage model in wingbox aircraft structure. The high possibility of aluminium wingbox structure to deform during operating become a driving force in this study. The Rousselier model is impleme...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1106; no. 1; pp. 12013 - 12024
Main Authors Ahmad, M.I.M., Curiel-Sosa, J.L., Akbar, M., Abdullah, N.A.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2018
Subjects
Aircraft accidents & safety
Aircraft structures
Aluminum
Commuter aircraft
Damage assessment
Damage detection
Finite element method
Inspection
Mathematical models
Stress concentration
Ultimate loads
Wing boxes
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Summary:The present paper illustrates a modelling technique of void damage prediction using constitutive Rousselier damage model in wingbox aircraft structure. The high possibility of aluminium wingbox structure to deform during operating become a driving force in this study. The Rousselier model is implemented by the user-defined material subroutine UMAT in the ABAQUS / Standard. The wingbox is a part of a commercially-made commuter aircraft prototype, in which steady aerodynamic pressure is applied as the quasi-static, ranging from cruise load factor until the ultimate load factor. This analysis is divided into three assessments: load factor assessment, damage detection and implementation of Rousselier-UMAT-XFEM (RuX) model solution. The results indicate the maximum stress concentration occurs at the bottom-root part of the skin. The void volume fraction and the crack grow as the load factor increases to the ultimate load factor. A comparison with the literature is shown in some details.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1106/1/012013