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  4. Opportunities and Limitations of Structural Intensity Calculation regarding Uncertainties in the NVH design of Complex Vehicle Body Structures
 
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2015
Conference Paper
Title

Opportunities and Limitations of Structural Intensity Calculation regarding Uncertainties in the NVH design of Complex Vehicle Body Structures

Abstract
The calculation of the structural intensity allows for a better understanding of the NVH behavior of complex structures as it shows vibratory energy flows between an excitation and radiating areas. However, the information gathered is underlying aleatory and epistemic uncertainties and needs to be dealt with carefully. In this paper two aspects are discussed: Firstly how the structural intensity calculation helps to reduce uncertainty in NVH design and secondly what currently existing uncertainties need to be considered and how they can be further reduced. This does not only include an improvement of the current calculation process itself but also an extension towards an integrated, holistic calculation of vibratory energetic quantities for structure-borne and air-borne sound.
Author(s)
Stoewer, Torsten
BMW, München
Ebert, Johannes
BMW, München
Melz, Tobias  
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Mainwork
Uncertainty in mechanical engineering II  
Conference
International Conference on Uncertainty in Mechanical Engineering (ICUME) 2015  
DOI
10.4028/www.scientific.net/AMM.807.78
Language
English
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Keyword(s)
  • structural intensity

  • energy flow

  • NVH

  • FEM

  • uncertainty

  • acoustic

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