Modelling vibration transmission on frameworks of beams using Advanced Statistical Energy Analysis



Hopkins, C ORCID: 0000-0002-9716-0793 and Wang, X
(2016) Modelling vibration transmission on frameworks of beams using Advanced Statistical Energy Analysis. In: Internoise 2016, 2016-8-22 - 2016-8-24.

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Abstract

To account for indirect coupling and high propagation losses on frameworks of coupled beams, Advanced Statistical Energy Analysis (ASEA) has been used to study bending and torsional wave models, and bending and longitudinal wave models on frameworks of beams. At high-frequencies, Timoshenko theory was incorporated into ASEA by changing the group velocity used to calculate the coupling loss factors, but maintaining the Euler-Bernoulli beam transmission coefficients. Comparisons of FEM, SEA and ASEA show that high propagation losses can occur with a rectangular beam frame, while tunneling exists in a three-bay linear grillage which has relatively short beam lengths. Unlike SEA, ASEA is shown to be able to account for the indirect coupling and these losses. For a three-bay linear grillage, comparisons with FEM show that ASEA is able to predict the response on the 'perfectly periodic' structure as well as a more realistic engineering structure with uncertainty in the Young's modulus.

Item Type: Conference or Workshop Item (Unspecified)
Depositing User: Symplectic Admin
Date Deposited: 02 Sep 2016 09:02
Last Modified: 19 Jan 2023 07:30
URI: https://livrepository.liverpool.ac.uk/id/eprint/3003092