Annular wavy periodic floating raft

Abstract

The invention discloses an annular wavy periodic floating raft, comprising an upper panel, a plurality of juxtaposed intermediate annular wavy structural members and a lower panel, wherein a stabilizing ring is arranged in the middle of the annular wavy structural members to increase structural rigidity and stability; The small panel of each annular wavy structure is connected with the upper paneland the lower panel. The annular wavy periodic floating raft of the invention has high initial stiffness, can effectively absorb vibration energy, and has good recovery after tension and compression;meanwhile, when the vibration propagates along the height direction through the annular wavy structure, the stopband characteristics of the periodic structure are formed and the waveform conversion occurs, so that the vibration is greatly attenuated and the safety and reliability are strong. The invention also discloses a manufacturing method of an annular wavy periodic floating raft.

Description

technical field [0001] The invention relates to a periodic floating raft and a vibration isolation design method thereof, in particular to an annular wave-shaped periodic floating raft and a manufacturing method thereof, belonging to the technical field of ship floating raft vibration isolation. Background technique [0002] With the development of society and the advancement of science and technology, modern ships have higher and higher requirements for vibration and noise indicators. For large-scale marine power equipment, it often produces large vibration and radiation noise during normal operation, and it is necessary to carry out vibration isolation and noise reduction treatment for these power equipment. The floating raft is a vibration isolation device applied to ship power equipment that appeared in the 1960s and 1970s. Generally, it can reach a vibration level drop of 36dB-46dB, and the vibration isolation effect is good. It has achieved a wide range of vibration is...

AI Technical Summary

Problems solved by technology

However, because the invention does not have circumferential symmetry, the "well"-shaped structure is more prone to the problem of excessive structural deformation due to uneven force than the circular structure, so that when designing the structure, it is necessary to design the structure according to the specific vibration isolation equipment. design, the design workload is large; and its preparation method is relatively complicated, the preparation requirements and steps are relatively cumbersome, and it is not popular, so the invention is limited to the application in the aerospace field

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