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Equivalent modeling and vibration reduction analysis of wing crane engine hanger structure

Update:29-11-2019
Summary:

In order to verify the vibration reduction effect of wi […]

In order to verify the vibration reduction effect of wing crane engine hanger structure on engine vibration transmission, it is necessary to carry out relevant structural dynamic analysis. According to the actual engine hanger structure, the equivalent model of hanger structure is established by software, and the vibration modal analysis is carried out. Under the measured loads of three typical engine conditions (take-off, cruising and idle speed), the damping characteristics of the hanger structure are analyzed, and the relationship between the damping effect of the hanger structure and the dynamic stiffness of the structure is studied. The results show that the structural design of the engine hanger has a good damping effect, but the high frequency damping effect of the hanger is slightly reduced because the dynamic stiffness of the hanger increases with the frequency of the excitation force.

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