Complex Vibration Isolation System Vibration Transfer Characteristics

The study on the transmission of power flow in complex vibration system is a valuable research issue in vibration field and the key research in the vibration engineering field. With the background of National Nature Science Foundation of China, based on the mechanical vibration and noise control technology, the article carries out a research work on transmission of power flow in complex vibration system.Aimed at the multiple excitations, multiple mounts, multiple stages, and the asymmetry isolation system, A general model for complex flexible vibration system is established, which describes a count method of power flow. The transmission of power flow on each coupling interface is calculated. The mechanism of power flow on each subsystem is analysed. The general theory and method of vibration transmission on multiple stages isolation system is systemically summarized.Aimed at the enginery vibration, the transmission function of power flow on multiple mounts isolation system is advanced by dynamic tansmission matrix of each subsystem on isolation system and the influence of structural parameters on power flow is systemically studied, The conclusion provides a theoretical basis for the analysis of complex flexible vibration system.Aimed at design problems of raft setting in naval ships isolation system, a theoretical research model is advanced to transmission equation of power flow on input foundation. Power flow transmission spectrum is emulated and calculated. The coupling action of raft and foundation and influence of structural parameters on power flow transmission spectrum of system are discussed.The complex isolation model is advanced under the circumstance of considering of force and moment.The effect factors of power flow is analyzed,such as different force and parameters of system .The result will provide for vibration and noise analysis and optimum design of complicated system.