Opportunities and Limitations of Structural Intensity Calculation Regarding Uncertainties in the NVH Design of Complex Vehicle Body Structures

Torsten Stoewer; Johannes Ebert; Tobias Melz

doi:10.4028/www.scientific.net/AMM.807.78

Paper Titles

Fluid-Structure Interaction Simulation of an Aortic Phantom with Uncertain Young's Modulus Using the Polynomial Chaos Expansion
p.34

Investigation of Uncertainty Sources of Piezoresistive Silicon Based Stress Sensor
p.45

Comparison of a New Passive and Active Technology for Vibration Reduction of a Vehicle under Uncertain Load
p.57

Model Verification and Validation of a Piezo-Elastic Support for Passive and Active Structural State Control of Beams with Circular Cross-Section
p.67

Opportunities and Limitations of Structural Intensity Calculation Regarding Uncertainties in the NVH Design of Complex Vehicle Body Structures
p.78

Uncertainty in Product Modelling within the Development Process
p.89

Uncertainty Scaling – Motivation, Method and Example Application to Aload Carrying Structure
p.99

An Approach to Using Elemental Interfaces to Assess Design Clarity
p.109

Orbital Forming of Flange Parts under Uncertainty
p.121

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 807Opportunities and Limitations of Structural...

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.

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Periodical:

Applied Mechanics and Materials (Volume 807)

Pages:

78-86

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.807.78

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Online since:

November 2015

Authors:

Torsten Stoewer*, Johannes Ebert, Tobias Melz

Keywords:

Acoustics, Energy Flow, FEM, NVH, Structural Intensity, Uncertainty

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