Wave scattering in coupled composite plates

Aimakov, Nurkanat; Tanner, Gregor; Chronopoulos, Dimitrios

Abstract

Establishing the wave propagation characteristics at plate junctions is of great importance in the prediction of vibrational energy transmission across complex structures. A hybrid approach combining the finite element (FE) and the wave finite element (WFE) method at interconnects between flat, isotropic plates has recently been established for calculating reflection and transmission coefficients. The method is based on modelling joints such as an L-shaped joint with FE with boundary conditions given by the solutions of the WFE method for the infinite plate. We extend this method to study two dimensional anisotropic plates. Numerical results for the bending wave transmission across coplanar and L-shaped junctions are presented. Comparisons of numerically predicted scattering coefficients with analytical solutions for selected structures are used to validate the model. The results obtained are important for Statistical Energy Analysis (SEA) and Dynamical Energy Analysis (DEA) based calculations of wave energy distribution of the full structure.

Citation

Aimakov, N., Tanner, G., & Chronopoulos, D. (2019). Wave scattering in coupled composite plates. In Proceedings of Internoise 2019 , The 48th International Congress and Exhibition on Noise Control Engineering

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: Inter.noise 2019, 48th International Congress and Exhibition on Noise Control Engineering
• Start Date: Jun 16, 2019
• End Date: Jun 19, 2019
• Acceptance Date: Apr 15, 2019
• Online Publication Date: Sep 30, 2019
• Publication Date: Sep 30, 2019
• Deposit Date: Jun 16, 2021
• Publicly Available Date: Jun 21, 2021
• Series Title: Inter-Noise. International Conference on Noise Control Engineering
• Series ISSN: 0105-175X
• Book Title: Proceedings of Internoise 2019 , The 48th International Congress and Exhibition on Noise Control Engineering
• ISBN: 9788487985317
• Keywords: structure-borne sound; wave and finite element method; composites
• Public URL: https://nottingham-repository.worktribe.com/output/5688836
• Related Public URLs: http://www.sea-acustica.es/fileadmin/INTERNOISE_2019/Enter.htm
• Additional Information: Paper 1713