Abstract
In order to control the pipe vibration, the performance of flexible connection with vibration isolation mass in impeding vibration wave propagation is studied. Based on the principle of impedance mismatching and numerical analysis method, the influences of vibration isolation mass and rotational inertia on the vibration wave propagation in pipe were discussed. The results show that the isolation mass is good at reducing the vibration of wave transmission in intermediate and high frequency domain. Meanwhile, The larger rotational inertia of the isolation mass, the better the damping effect. A useful reference was provided for the application of flexible connection to the vibration isolation and noise reduction of ship pipe.
Highlights
With the advancement of science and technology, the number of equipments installed in ships and submarines are increasing
Research on the characteristics of pipe vibration impeded by vibration isolation mass can help the engineer to design the vibration isolation mass of pipe, reduce the structural vibration propagated through the piping system, and improve the acoustic stealth performance of the vessel
The performance of flexible connection with vibration isolation mass in impeding vibration wave propagation is studied in this paper
Summary
With the advancement of science and technology, the number of equipments installed in ships and submarines are increasing. Research on the characteristics of pipe vibration impeded by vibration isolation mass can help the engineer to design the vibration isolation mass of pipe, reduce the structural vibration propagated through the piping system, and improve the acoustic stealth performance of the vessel. Vibration isolation mass mainly causes the impedance mismatch by leading to the discontinuity of the mass or rigidity of the steady structure , thereby reflecting the incident wave effectively. For the application of vibration isolation mass in the pipe, Yang et al [8] studied the characteristic of vibration propagated in fluid-filled pipe and the vibration reduction effect of vibration isolation mass on the fluid-filled pipe by the experimental method. Based on the principle of impedance mismatching and numerical analysis method, the influences of vibration isolation mass and rotational inertia on the vibration wave propagation in pipe were discussed in this paper. Some useful reference were provided for the engineering to design the pipe system of ship and submarine
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