OPTIMAL DESIGN OF DYNAMIC ABSORBERS FOR REDUCTION OF THE VIBRATION AND THE INTERIOR NOISE OF A CYLINDRICAL SHELL
碩士 === 國立中央大學 === 機械工程學系 === 84 === A closed cylindrical shell is used as a simple model of the fuselageof an aircraft. For reducing the vibration of the fuselage and the resultant sound pressure due to propellers, several dynamic absorbers are attached t...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
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| Online Access: | http://ndltd.ncl.edu.tw/handle/01318186876537066265 |
| Summary: | 碩士 === 國立中央大學 === 機械工程學系 === 84 === A closed cylindrical shell is used as a simple model of the
fuselageof an aircraft. For reducing the vibration of the
fuselage and the resultant sound pressure due to propellers,
several dynamic absorbers are attached to the shell. In the
report, the vibration and the interior sound field are devived
analytically by using the technique of subsystem synthesis and
model expansion, where the external distributed forces are
chosen according to experimental data of a real aircraft. The
optimal design of the absorbers for the above mentioned purpose
is investigated. The absorbers after designed can greatly
improve the performance.
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