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Influence of Seals in Sound Insulation Prediction of Steel Double Panel Doors
Research Areas
  • Regional geography
The study of sound insulation door is divided in two paths: structural transmission trough the door leaf and leak transmission trough the slits. To predict structural sound insulation in double panel steel door the Sharp¿s model was used. Factors such as cavity sound absorption, interpanel connections in the door edges and sound barrier in cavity are included in this model. Jones¿ theory was used to predict leak transmission which assumes perfect transmission trough slits. Hongisto¿s model was used to calculate total sound insulation using Sharp¿s and Jones¿ models. The mean goal of this paper is to show accurate prediction models for high sound insulation door design under laboratory conditions with bigger quantity of seal models compared with Hongisto¿s research. Using these models designers can save costs in mass increase or seal selection. To compare laboratory results with Hongisto¿s Model a high structural transmission loss door was used to study the influence of sealing in high insulation doors (level effect). Several seal models were used to compare laboratory results with Hongisto¿s Model. Different combinations of adjustable side and top double neoprene, single and double floor neoprene and cushion bronze seals were used. These seals had different installation and sealing principle. Hongisto¿s model showed to be a good prediction model, because it gives ± 5 dB error in a wide frequency range (160 Hz ¿ 2000 Hz) in the most seal combinations. When cushion bronze seals are only used in the door perimeter and double floor neoprene, Hongisto¿s model is not accurate. Finally, it was found that adjustment, material, and seal combination as well as sealing principle are very important factors to be considered when Hongisto¿s prediction model is used.
19th International Congress on Acoustics (ICA 2007)
Madrid, España
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  • Autor: Manuel Recuero Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Investigación en Instrumentación y Acústica Aplicada (I2A2)
  • Centro o Instituto I+D+i: Instituto Universitario de Investigación del Automóvil (INSIA)
  • Departamento: Ingeniería Mecánica y de Fabricación
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