Design Of Frame Type Floating Raft System And Its Isolation Characteristics Analysis

As an important branch of the field in vibration and noise control, vibration isolationtechnology has important scientific significance and broad prospects of application, floatingraft isolation system is an effective isolation device. it is constituted with floating raft onwhich the several apparatus are installed flexibly and the floating raft is mounted on the baseflexibly. It is known that how to control vibration and how to reduce noise by floating raftisolation system are the hot topics. According to the characteristics of the floating raftisolation system, a new type of a frame floating raft isolation system is designed and itsdynamic characteristics are analyzed. The contents and achievements in this paper are thefollowing aspects:First, to the simple model the vibration isolation theory and power flow transmissiontheory of floating raft vibration isolation system are studied, which provides the theoreticalbasis for evaluating effect of the floating raft vibration isolation.Second, the modeling methods for dynamics of floating raft system are introduced andcomparisons among the methods are carried out. Base on those a new type of framefloating raft system is designed, the finite element modeling method is chosen to model theframe floating raft and the dynamics of the frame raft is analyzed.Third, the dynamics of the frame floating raft system is carried out by the modalanalysis method, and the design rationality of the intermediate frame raft is ensured.Fourth, several type of slap frame floating raft system are designed, syntonic responsesof the frame floating raft system is analyzed by ANSYS, the isolation characteristics is checked and evaluated, and some improvements of the isolation system are put forward.