Structural-Borne Noise Prediction Using Measured Acceleration Data
碩士 === 國立海洋大學 === 造船工程學系 === 85 === This thesis presents a method to predict noise level by measured acceleration data. The methodis based on computed natural vibrational modes of the radiator in connection with the BoundaryElement Method....
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1997
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| Online Access: | http://ndltd.ncl.edu.tw/handle/46953840135466994193 |
| Summary: | 碩士 === 國立海洋大學 === 造船工程學系 === 85 === This thesis presents a method to predict noise
level by measured acceleration data. The methodis based on
computed natural vibrational modes of the radiator in connection
with the BoundaryElement Method. A singular Value Decomposition
is applied to determine the surface response of the radiator
under a mono-frequency in a sense of least mean-square error.
Once the surface normal velocity is determined by the SVD the
radiated acoustic power is computed accordingly.It is
demonstrated that the accuracy of the computed radiated pressure
is due to the selection of those natural vibration modes which
radiateacoustic powers.
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