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Structure borne sound investigation of a light weight floor with the help of Markov chain walking patterns

Bard, Delphine LU and Claesson, Jimmy (2009) 16th International Congress on Sound and Vibration 2009, ICSV 2009 5. p.2982-2987
Abstract

Each person has a very individual way of walking, though persons having the same sex and the same height, weight and age are likely to have similarities in the angle of the feet and the length of the stride. To simulate this, a number of Markov chains, that describe the stride, were created from experiments with 150 different males. The Markov chains were then used to create an artificial person for simulations, with a height of between 181-185 cm and a weight of 80 kg, which was to walk over the length of the floor. Each stride contained both heel and toe excitation defined based on the mean value of each concurrent stride. The floor in the simulation, created with the help of FEM, is a lightweight floor built out of wooden beams and... (More)

Each person has a very individual way of walking, though persons having the same sex and the same height, weight and age are likely to have similarities in the angle of the feet and the length of the stride. To simulate this, a number of Markov chains, that describe the stride, were created from experiments with 150 different males. The Markov chains were then used to create an artificial person for simulations, with a height of between 181-185 cm and a weight of 80 kg, which was to walk over the length of the floor. Each stride contained both heel and toe excitation defined based on the mean value of each concurrent stride. The floor in the simulation, created with the help of FEM, is a lightweight floor built out of wooden beams and particle board on top. This system was chosen due to its low weight per square meter compared to the weight of the walking person which therefore can be set in motion more easily. From the FEM simulation the velocity of all points of the floor was extracted. The velocity was then used to calculate the radiated sound pressure from the floor to different points on the floor below. The radiation from the different points of the floor will be presented graphically for 3 different measurement points.

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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
16th International Congress on Sound and Vibration 2009, ICSV 2009
volume
5
pages
6 pages
publisher
The International Institute of Acoustics and Vibration
conference name
16th International Congress on Sound and Vibration 2009, ICSV 2009
conference location
Krakow, Poland
conference dates
2009-07-05 - 2009-07-09
external identifiers
  • scopus:84871441280
ISBN
9781615677368
language
English
LU publication?
yes
id
fe032871-4803-4e21-a85a-73aec542b319
date added to LUP
2019-05-21 15:32:30
date last changed
2021-05-25 04:12:42
@inproceedings{fe032871-4803-4e21-a85a-73aec542b319,
  abstract     = {<p>Each person has a very individual way of walking, though persons having the same sex and the same height, weight and age are likely to have similarities in the angle of the feet and the length of the stride. To simulate this, a number of Markov chains, that describe the stride, were created from experiments with 150 different males. The Markov chains were then used to create an artificial person for simulations, with a height of between 181-185 cm and a weight of 80 kg, which was to walk over the length of the floor. Each stride contained both heel and toe excitation defined based on the mean value of each concurrent stride. The floor in the simulation, created with the help of FEM, is a lightweight floor built out of wooden beams and particle board on top. This system was chosen due to its low weight per square meter compared to the weight of the walking person which therefore can be set in motion more easily. From the FEM simulation the velocity of all points of the floor was extracted. The velocity was then used to calculate the radiated sound pressure from the floor to different points on the floor below. The radiation from the different points of the floor will be presented graphically for 3 different measurement points.</p>},
  author       = {Bard, Delphine and Claesson, Jimmy},
  booktitle    = {16th International Congress on Sound and Vibration 2009, ICSV 2009},
  isbn         = {9781615677368},
  language     = {eng},
  month        = {12},
  pages        = {2982--2987},
  publisher    = {The International Institute of Acoustics and Vibration},
  title        = {Structure borne sound investigation of a light weight floor with the help of Markov chain walking patterns},
  volume       = {5},
  year         = {2009},
}