High-frequency structure- and air-borne sound transmission for a tractor model using Dynamical Energy Analysis

Hartmann, Timo; Morita, Satoshi; Tanner, Gregor; Chappell, David J.

Abstract

Dynamical Energy Analysis (DEA) is a mesh-based high frequency method for modelling structure borne sound in complex built-up structures. Vibro-acoustic simulations are performed directly on finite element meshes, circumventing the need for re-modelling strategies. DEA provides detailed spatial information about the vibrational energy distribution within a complex structure in the mid-to-high frequency range. We will present here progress in the development of the DEA method towards handling complex FE-meshes including Rigid Body Elements and sound radiation. We also provide, for the first time, a detailed comparison of the simulations with measurements on a complex engineering structure consisting of the chassis and cabin of a tractor. Both structure borne vibrations and sound pressure levels (SPL) inside the cabin were considered. For the latter, a combined DEA/SEA analysis has been developed. The simulation results compare favourably with measurement results, both for vibration levels measured across the structure and for SPLs inside the cabin.

Citation

Hartmann, T., Morita, S., Tanner, G., & Chappell, D. J. (2019). High-frequency structure- and air-borne sound transmission for a tractor model using Dynamical Energy Analysis. Wave Motion, 87, 132-150. https://doi.org/10.1016/j.wavemoti.2018.09.012

• Journal Article Type: Article
• Acceptance Date: Sep 12, 2018
• Online Publication Date: Sep 27, 2018
• Publication Date: 2019-04
• Deposit Date: Apr 30, 2019
• Publicly Available Date: Feb 18, 2021
• Journal: Wave Motion
• Print ISSN: 0165-2125
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 87
• Pages: 132-150
• DOI: https://doi.org/10.1016/j.wavemoti.2018.09.012
• Keywords: General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/1878741
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0165212518303913?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: High-frequency structure- and air-borne sound transmission for a tractor model using Dynamical Energy Analysis; Journal Title: Wave Motion; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.wavemoti.2018.09.012; Content Type: article; Copyright: © 2018 Elsevier B.V. All rights reserved.