发明名称 |
STRUCTURE COMPRISING A ROTOR AND FIXED PERTURBATION SOURCES AND METHOD FOR REDUCING VIBRATIONS IN SAID STRUCTURE |
摘要 |
<p>A method of reducing vibration in a structure comprising at least one rotor ( 101 <SUB>j</SUB>) and a fixed set of sources of disturbance ( 102 <SUB>j</SUB>) liable to give rise to disturbances in the fluid flow ( 11 ) that cause the rotor to vibrate, the method comprising a step of distributing the fixed sources of disturbance angularly in non-uniform manner so as to reduce the amplitude of excitation as seen by the rotor, and a step which consists in verifying that the maximum amplitude of a response of the rotor to the excitation is obtained by: determining a first signal whose Fourier transform corresponds to the frequency spectrum of the excitation in the event of the fixed sources of disturbance being distributed in a predetermined angular distribution; by modifying the first signal into a second signal adapted to said selected angular distribution for the fixed sources of disturbance; by determining the frequency spectrum of the excitation by calculating the Fourier transform of the second signal; and by calculating the response of the rotor to the excitation on the basis of the frequency spectrum of the excitation.</p> |
申请公布号 |
EP1386058(B2) |
申请公布日期 |
2010.01.20 |
申请号 |
EP20020738237 |
申请日期 |
2002.05.10 |
申请人 |
SNECMA |
发明人 |
BERTHILLIER, MARC;CLOAREC, YVON;SEINTURIER, ERIC |
分类号 |
F01D5/10;F01D25/04;F04D29/54;F04D29/66;F16F15/20 |
主分类号 |
F01D5/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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