Series-parallel tuned inertial damper

Abstract

The invention provides a serial-parallel tuned inertial damper, which includes: a shell body, a shearing rotating member and a screw rod, the shell body has a cavity, and an inner support sleeve is provided at the bottom of the cavity, and the shell An accommodating space is formed between the inner wall of the body and the inner support sleeve to contain the viscous medium; the shearing rotating member is rotatably arranged in the cavity and above the inner supporting sleeve, and the shearing rotating member is provided with a rotating slice to Shearing the viscous medium produces a damping effect, the screw rod is passed through the shell body and extends into the sleeve, and is screwed with the shearing rotating member to convert the axial movement of the screw rod into the rotating motion of the shearing rotating member, Due to its own viscous characteristics, the viscous medium produces a drag force distributed over the entire circumference of the rotating slice, thus forming a large torque on the rotating shaft, and this torque is transformed into a large obstacle after shearing the rotating part. The damping force of the axial movement of the screw rod acts on the engineering structure.

Description

Series-parallel tuned inertial damper technical field [0001] The invention belongs to the technical field of engineering structure vibration control, in particular to a series-parallel tuned inertial mass damper. Background technique Structural vibration control is a theoretical and engineering problem that is widely used and interdisciplinary in many disciplines. It is a measure to make the dynamic response of the structure meet a certain threshold, that is, to meet the engineering requirements. There are many types and control objectives There are many different ways to achieve it. At present, domestic and foreign attach great importance to this problem, and scientific research and engineering personnel have already carried out research on this kind of problem. Numerous studies, experiments and engineering applications. From the angle of control process to external energy demand, structural vibration control can be divided into: passive structural control, active ...

AI Technical Summary

Problems solved by technology

But at the same time, the traditional viscous shear damper has the following disadvantages: first, the damper itself has a certain internal stiffness, which weakens its damping effect; The reason may lead to the mutual collision of slices inside the damper, which greatly shortens the service life, and even directly makes the device fail; third, the damping force asymmetry problem, the vertical shear between the slices of the traditional viscous shear damper and the viscous medium shear movement, when the shear plate is immersed in the viscous medium when it is compressed, the shear area increases, while the area decreases when it is tensioned, which leads to the asymmetry of the mechanical properties of the traditional viscous shear damper under tension and compression , this phenomenon is most significant when the displacement amplitude is large

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