Sanuja Jayatilake, Mark Lowenberg, Benjamin King Sutton Woods, Branislav Titurus

DOI Number: N/A

Conference number: IFASD-2024-166

This paper conceptually explores the potential of exploiting resonant and anti-resonant interactions of force transmissibility functions to suppress responses under external (gust-like) excitation in High Aspect Ratio Wings (HARW). By considering a half-fuselage and wing configuration with a strut incorporating an inerter, it is shown numerically that the anti-resonant regions of the inertial load response of the fuselage can be tailored by augmenting the inertial characteristics of the original configuration. Whilst this was parametrically achieved by varying the inertance of the strut-device, the analytical examination of the underlying contributing factors to anti-resonance recognized a significant influence from the high-frequency non-resonant modes. The demonstrated approach, which achieved frequency-localized suppression of the fuselage responses, could improve ride comfort and reduce specific structural load transmission in HARW aircraft. At the same time, it is stipulated that the same modal inertia-based response tailoring could be aimed at reducing variety of other critical loads such as wing root bending moments.

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In Categories: 1. IFASD 2024, 1.Events, Dynamic Loads
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