Research of Random Vibration Response of Space Pipeline Structure and Vibration Control Technology
During the flight process,the pipeline structure of the aircraft will produce a great vibration response,which may lead to fracture failure in serious cases.Vibration control is the main way to delay the failure of pipeline structure and improve the reliability.In this paper,through boundary simplification and welding position modeling,a three-dimensional dynamic model of complex space pipeline structure is established.The maximum error of the modal simulation results is less than 3%compared with the experimental modal results.On this basis,the metal shock absorb-er is used to control the vibration.Through calculation,the vibration reduction efficiency of space pipeline structure be-fore and after using metal shock absorber is 8.46%under random vibration load.The actual damping efficiency of the metal shock absorber reached 14.26%through the test.The results of calculation and test show that the metal shock ab-sorber can significantly reduce the vibration response of complex space pipeline structures.
vibration controlpipeline structuremetal shock absorbersrandom vibration test
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