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First Order Analysis for Automotive Body Structure Design - Part 4: Noise and Vibration Analysis Applied to a Subframe
Technical Paper
2004-01-1661
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
First Order Analysis (FOA) is useful for designing subunits in the mid-frequency range, as the layout and mounting positions can easily be decided at the conceptual design phase. In order to reduce vibration, we propose FOA for Noise and Vibration (NV) with the following characteristics. First, a dynamic beam element is formulated analytically using Euler's beam theory [1], so that a long uniform beam can express one element with high-order vibration. Second, power flow between potential energy and kinetic energy can be expressed as post-processing, so we can examine how to change or cut off the vibration energy path. In this paper, the above analysis is applied to a front subframe for the conceptual design of an automotive body structure.
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Citation
Nakagawa, T., Nishigaki, H., Tsurumi, Y., and Kikuchi, N., "First Order Analysis for Automotive Body Structure Design - Part 4: Noise and Vibration Analysis Applied to a Subframe," SAE Technical Paper 2004-01-1661, 2004, https://doi.org/10.4271/2004-01-1661.Also In
References
- Rayleigh J. W. S. “Theory of Sound,” 2nd 1 Dover Publ. New York 1945
- Noiseux D. U. “Measurement of Power Flow in Uniform Beams and Plates,” JASA 1 1 1970 238 247
- Pavic G. “Measurement of Structure Borne Wave Intensity, Part 1: Formulation of the Methods,” Journal of Sound and Vivration 49 2 1976 221 230
- Tsurumi Y. et al “First Order Analysis for Automotive Body Structure Design - part 2: Joint Analysis Considering Nonlinear Behavior,” SAE Paper, 2004-01-1659 2004