Structural integrity assessment of cracked composite plate under aeroelastic loading by means of XFEM

Abdullah, Nur Azam and Curiel-Sosa, J.L. and Wirawan, Nanda and Akbar, Mahesa (2018) Structural integrity assessment of cracked composite plate under aeroelastic loading by means of XFEM. In: 6th International Conference Integrity-Reliability-Failure, 22-26 Jul 2018, Lisbon, Portugal.

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Abstract

In this paper, a novel procedure to analyse dynamic crack under aeroelastic loading by means of XFEM and Doublet Lattice Method (DLM) - FEM coupling is presented. The present work performed a new investigation on the crack propagation on the composite plate exerted by the unsteady aerodynamic loading during the cruise speed. The study on whether the failure due to instability, i.e., flutter, comes first or the crack propagates first until the structural failure is focused. The flutter speed is determined, and the maximum cruise speed is assessed based on the regulation guided by the FAR 23. The proposed method is used to solve the limitation in XFEM within Abaqus that only general static and implicit dynamic analysis can be performed. As the propagation of crack should be analyzed, the composite plate is assigned based on the energy release rate (ERR) of that type of material. The influence of a crack growth on a composite plate at cruise speed is shown in some details. Despite the fact that the crack is propagated at this speed, with initial crack ratio of 0.25, the crack has just grown slightly.

Item Type:	Conference or Workshop Item (Speech/Talk)
Additional Information:	8760/74973
Uncontrolled Keywords:	flutter, composite, time-domain response, aerodynamic load, XFEM
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr. Nur Azam Abdullah
Date Deposited:	21 Oct 2019 10:41
Last Modified:	21 Oct 2019 10:41
URI:	http://irep.iium.edu.my/id/eprint/74973

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