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Sensitivity Study of Different Damping Treatments Using Simulation and Physical Testing Methodologies on Structure Borne Driver’s Ear Noise Performance in a Premium Hatchback Car
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 09, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Effective damping treatment of the BIW panels of a vehicle is one of the important NVH enablers to attenuate in-cab structure borne noise and panel vibrations. Adding these damping treatments using physical testing methods at a later stage in a vehicle development program may lead to sub-optimal configuration, mass and cost of these treatments. To counter this, a validated simulation based approach to determine damping treatments must be deployed much upfront in a vehicle development program. Effectiveness of a damping treatment depends on identification of most appropriate application locations on the BIW panels of a vehicle being designed and at the same time on employing most appropriate materials having desired properties for these treatments.
For identifying optimized locations of damping treatments in the development of a new Tata car program, simulation based composite modal strain energy method and physical test based sound intensity mapping technique were deployed. In earlier stages of development, much before the physical prototypes of the car were available, the damping treatment locations and appropriate materials were proposed using simulation methodology. Effectiveness of these identified locations was established through simulating body attachment point noise transfer functions (NTFs). Final damping locations were arrived at based on comprehensive study of these simulation results. Subsequently, sensitivities of different damping treatment materials available in market were studied to arrive at the most effective application of these damping treatments. Once the physical prototypes were built later in the program, these identified locations were validated through physical testing using sound intensity mapping method. The results correlated well with the simulation. Appropriate conclusions based on this study were made.
CitationRaghuvanshi, J., Palsule, A., Bodhale, N., Kharade, A. et al., "Sensitivity Study of Different Damping Treatments Using Simulation and Physical Testing Methodologies on Structure Borne Driver’s Ear Noise Performance in a Premium Hatchback Car," SAE Technical Paper 2019-26-0196, 2019, https://doi.org/10.4271/2019-26-0196.
Data Sets - Support Documents
|Unnamed Dataset 1|
- Terashi , S. , Asai , M. , and Naito , J. Damping Analysis of Body Panels for Vehicle Interior Noise Reduction SAE Technical Paper 891135 1989 10.4271/891135
- Subramanian , S. , Surampudi , R. , Thomson , K. , and Vallurupalli , S. Optimization of Damping Treatment for Structure Borne Noise Reduction SAE Technical Paper 2003-01-1592 2003 10.4271/2003-01-1592
- He , H. , Zhang , Q. , and Fridrich , R. Vehicle Panel Vibro-Acoustic Behavior and Damping SAE Technical Paper 2003-01-1406 2003 10.4271/2003-01-1406
- Arunkumar , S. , Saisankaranarayana , K. , and Hatti , K. Noise Reduction at Source for a Vehicle Using Free Layer Damper SAE Technical Paper 2011-26-0067 2011 10.4271/2011-26-0067
- Akanda , A. and Goetchius , G. Representation of Constrained/Unconstrained Layer Damping Treatments in FEA/SEA Vehicle System Models: A Simplified Approach SAE Technical Paper 1999-01-1680 1999 10.4271/1999-01-1680