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Coupling elements for substructure modelling of lightweight multi-storey buildings

Flodén, Ola LU ; Persson, Kent LU and Sandberg, Göran LU (2014) International Modal Analysis Conference (IMAC) XXXII In Dynamics of Coupled Structures Volume 1. p.113-124
Abstract (Swedish)
Abstract in Undetermined

Accurately modelling the dynamic behaviour of multi-storey buildings in wood requires the geometry involved to be represented in great detail, resulting in systems having many millions of degrees of freedom. Consequently, there is a need for model order reduction and the methodology of substructure modelling is employed here to create reduced models for analysis of low-frequency vibrations. The full finite element model of a building is divided into substructures

which are reduced in size before being assembled to form the global model. The efficiency of the reduced models is strongly dependent on the number of degrees of freedom at the interface surfaces of the substructures, why it may be... (More)
Abstract in Undetermined

Accurately modelling the dynamic behaviour of multi-storey buildings in wood requires the geometry involved to be represented in great detail, resulting in systems having many millions of degrees of freedom. Consequently, there is a need for model order reduction and the methodology of substructure modelling is employed here to create reduced models for analysis of low-frequency vibrations. The full finite element model of a building is divided into substructures

which are reduced in size before being assembled to form the global model. The efficiency of the reduced models is strongly dependent on the number of degrees of freedom at the interface surfaces of the substructures, why it may be necessary to perform interface reduction of some sort. Multi-storey buildings in wood are often constructed with

elastomer layers separating the structural components, these offering a natural choice of dividing the buildings into substructures. In this paper, the methodology of introducing a condensation node is adopted for employing interface reduction at the interfaces between the elastomer layers and the structural components in wood. Different methods of coupling the condensation node to the interface surfaces were compared in a test model consisting of a floor-ceiling structure in wood, where the floor and the ceiling are separated by elastomer blocks. It was concluded that a rigid coupling is the most appropriate choice for the interface surfaces of the elastomer blocks, while a distributed coupling provides the most accurate results for the interface surfaces of the floor and the ceiling. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Multi-storey buildings, Vibrations, Finite element method, Substructure modelling, Interface reduction
in
Dynamics of Coupled Structures
editor
Allen, Matt; Mayes, Randy and Rixen, Daniel
volume
Volume 1
pages
113 - 124
publisher
Springer
conference name
International Modal Analysis Conference (IMAC) XXXII
external identifiers
  • Scopus:84988700613
ISBN
978-3-319-04500-9
language
English
LU publication?
yes
id
0e2087b9-bb1b-4b45-b549-d3457be9dabb (old id 4376676)
date added to LUP
2014-03-28 10:33:04
date last changed
2016-10-13 04:50:46
@misc{0e2087b9-bb1b-4b45-b549-d3457be9dabb,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
Accurately modelling the dynamic behaviour of multi-storey buildings in wood requires the geometry involved to be represented in great detail, resulting in systems having many millions of degrees of freedom. Consequently, there is a need for model order reduction and the methodology of substructure modelling is employed here to create reduced models for analysis of low-frequency vibrations. The full finite element model of a building is divided into substructures<br/><br>
which are reduced in size before being assembled to form the global model. The efficiency of the reduced models is strongly dependent on the number of degrees of freedom at the interface surfaces of the substructures, why it may be necessary to perform interface reduction of some sort. Multi-storey buildings in wood are often constructed with<br/><br>
elastomer layers separating the structural components, these offering a natural choice of dividing the buildings into substructures. In this paper, the methodology of introducing a condensation node is adopted for employing interface reduction at the interfaces between the elastomer layers and the structural components in wood. Different methods of coupling the condensation node to the interface surfaces were compared in a test model consisting of a floor-ceiling structure in wood, where the floor and the ceiling are separated by elastomer blocks. It was concluded that a rigid coupling is the most appropriate choice for the interface surfaces of the elastomer blocks, while a distributed coupling provides the most accurate results for the interface surfaces of the floor and the ceiling.},
  author       = {Flodén, Ola and Persson, Kent and Sandberg, Göran},
  editor       = {Allen, Matt and Mayes, Randy and Rixen, Daniel},
  isbn         = {978-3-319-04500-9},
  keyword      = {Multi-storey buildings,Vibrations,Finite element method,Substructure modelling,Interface reduction},
  language     = {eng},
  pages        = {113--124},
  publisher    = {ARRAY(0x895db80)},
  series       = {Dynamics of Coupled Structures},
  title        = {Coupling elements for substructure modelling of lightweight multi-storey buildings},
  volume       = {Volume 1},
  year         = {2014},
}