Particle damping three-way steady oscillation plate with combination of electromagnetic induction

Abstract

The invention relates to a particle damping three-way steady oscillation plate having a flat plate structure having a certain thickness and has the inside with a cavity. The inner cavity of the steadyoscillation plate is divided into a plurality of small cavities by cavity partition boards, wherein the small cavities include closed small cavities and open cavities; damping particle cavities are arranged in the closed small cavities and are filled with damping particles; and vibration reducing units for damping under all-direction water flow impacts are arranged in the open cavities. The vibration reducing units include cavity rotating axles fixedly connected in the open cavities, cavity rotation impellers installed at the cavity rotating axles movably, and a plurality of damping particlecavities fixed to the cavity rotation impellers; and damping particles are installed in the damping particle cavities. According to the steady oscillation plate, under excitation of the ocean, the water flow is drained by particle damping impellers, the impellers are driven to rotate and thus internal particles rotate to cause the electromagnetic induction energy consumption and the friction collision of particles and the boundary so as to consume the kinetic energy of the structure, so that the initial vibration is reduced significantly.

Description

technical field [0001] The invention belongs to the field of marine engineering vibration control, in particular to a particle damping three-way stabilizing plate combined with electromagnetic induction. Background technique [0002] As offshore platforms move to farther seas, the disadvantages of non-floating offshore platforms that increase engineering cost and construction complexity are gradually exposed, and are gradually replaced by semi-submersible offshore platforms that are more adaptable. Compared with other commonly used platforms, the semi-submersible platform has the characteristics of strong wind shock resistance, strong wave shock capability and wide range of uses, and has gradually become the mainstream platform for deep sea drilling. However, due to the limited draft of the semi-submersible platform and the low water retention efficiency of the vertical support columns of the semi-submersible platform, the problems of stability and sway vibration will signif...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of insufficient sway control, insufficient additional mass, limited damping and damping direction, and low structural safety of the stabilization plate in the application of the existing stabilization plate in the semi-submersible offshore platform, and provides a Combined with the particle damping three-way stabilizing plate of electromagnetic induction, the stabilizing plate has strong sway and heave control capabilities, high structural safety, good stability, and simple process

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