Effects of Pre-Stressed Conditions on the Dynamic and Acoustic Behavior of Composite Sandwich Panels
Piero CHIAIA, Matteo FILIPPI, Alfonso PAGANI, Erasmo CARRERA
Abstract. Lightweight sandwich panels are widely used in aeronautical engineering for their high specific strength, stiffness, and multifunctional performance. Their applications have expanded from interior components to secondary and even primary load-bearing structures, as they offer excellent acoustic insulation and cabin noise and vibration reduction. Recent research focuses on enhancing acoustic performance through modified core materials, geometries, or absorptive layers. The present work is devoted to the development of high-fidelity multilayered plate models within the Carrera Unified Formulation (CUF) methodology, including the description of the physical nonlinearities of soft cores using a hyperelastic constitutive law. Within this framework, the linearized modal and frequency response analyses of lightweight sandwich structures with soft cores are proposed, examining the influence of prestress on natural frequencies, transmission ratios, and overall dynamical properties.
Keywords
Sandwich Panel, Higher-Order Models, Dynamic Analysis, Vibroacoustic Analysis
Published online 7/20/2026, 5 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Piero CHIAIA, Matteo FILIPPI, Alfonso PAGANI, Erasmo CARRERA, Effects of Pre-Stressed Conditions on the Dynamic and Acoustic Behavior of Composite Sandwich Panels, Materials Research Proceedings, Vol. 69, pp 303-307, 2026
DOI: https://doi.org/10.21741/9781644904251-54
The article was published as article 54 of the book CEAS – AIDAA Conference 2025
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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