Vibration transmission between two reinforced concrete beams with surface-to-surface contact conditions

Filippoupolitis, M and Hopkins, C ORCID: 0000-0002-9716-0793 (2019) Vibration transmission between two reinforced concrete beams with surface-to-surface contact conditions. In: ICA, 2019-9-9 - 2019-9-13, Aachen.

Text Filippoupolitis & Hopkins Vibration - FEM - two reinforced concrete beams with surface contact condition ICA 2019.pdf - Published version Download (1MB) | Preview

Abstract

To detect human survivors trapped in buildings after earthquakes by using structure-borne sound it is necessary to have knowledge of vibration transmission in collapsed and fragmented reinforced-concrete buildings. In this paper, Statistical Energy Analysis (SEA) is used to model vibration transmission between two reinforced concrete beams with surface-to-surface contact conditions. Experimentally validated Finite Element Models (FEM) of two elastically connected beams were used to carry out a Monte Carlo simulation with 30 beam junctions. Coupling loss factors were determined from the FEM data using Experimental SEA (ESEA) and these were compared against theoretical models based on a lump spring connector. Results are shown for bending modes, torsional modes and the combination of all modes. For only bending or torsional waves, close agreement was achieved between FEM ESEA and the analytical model up to the frequency where half the bending or torsional wavelength equaled the longest side of the contact area. When all wave types were combined, reasonable agreement could still be achieved but only at low-frequencies.

Item Type:	Conference or Workshop Item (Unspecified)
Depositing User:	Symplectic Admin
Date Deposited:	13 Sep 2019 07:18
Last Modified:	27 Apr 2024 12:18
DOI:	10.18154/RWTH-CONV-239313
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3054457