Applications of a hybrid method to a plate with simply supported boundary conditions

Churchill, Claire; Meggitt, Joshua W R; Wong-Mcsweeney, Daniel; Cox, Trevor J; Woodcock, James

Abstract

* The EN12354 building acoustics prediction standards are based on the statistical energy analysis (SEA) method. In a traditional SEA path analysis, lightweight or heavyweight materials have different principal paths that determine the sound insulation for the specified building acoustics frequency range (50Hz-5000Hz). Different building materials require different applications of the engineering method (EN12354) to determine in-situ sound insulation with flanking. A hybrid method, such as the (finite element method) FEM-SEA hybrid approach, offers an alternative theoretical framework to predict in situ sound insulation with the capacity to combine vastly different methods. In a hybrid model, different power flow contributions (due to the deterministic and direct-field energies) are naturally separated into different matrices. This work investigates the feasibility of using a hybrid model to predict sound insulation. The hybrid method is applied to three different materials. These models are compared against traditional SEA and infinite plate models.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 10th Convention of the European Acoustics Association (Forum Acusticum)
• Acceptance Date: Jul 10, 2023
• Online Publication Date: Sep 11, 2023
• Publication Date: Sep 11, 2023
• Deposit Date: Sep 28, 2023
• Publicly Available Date: Oct 2, 2023
• Journal: Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023
• DOI: https://doi.org/10.61782/fa.2023.0186
• Keywords: sound insulation (SI); hybrid model; building acoustics
• Related Public URLs: https://www.fa2023.org/