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Multilayer-laminated damper

A shock absorber and laminated technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve problems such as high cost and cases without mature applications

Active Publication Date: 2012-10-10
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its cost is high, and there is no mature application case at present

Method used

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  • Multilayer-laminated damper
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  • Multilayer-laminated damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: closed interface structure

[0022] Such as figure 2 , image 3 As shown, the laminated damping shock absorber 5 is made of multiple layers of thin steel sheets rolled into a plurality of concentric barrel-shaped steel rings, which are packaged; the thin steel sheet material can be structural steel, or it can be Spring steel; said sheet steel profile, such as figure 2 As shown, the single layer is unfolded into a rectangle 502; after rolling, the cross-section is a barrel shape 501; its interface is closed; the suit assembly method requires adjacent single-layer rectangular steel sheets to differ in length by 2π of the thickness of the steel sheet times, such as Figure 6 As shown, wherein, 4n is the number of laminated layers, n is a natural number, and t is the thickness of a single layer of laminated sheets; the installation azimuth of the interface should be installed at equal intervals along the circumferential direction according to the number o...

Embodiment 2

[0024] Embodiment 2: Open interface structure

[0025] The structure described in this example differs from Embodiment 1 only in the form of a single-layer lamination interface, such as Figure 4 shown. The single-layer lamination is unfolded into a rectangle 504 , and after being rolled, it is shaped like a barrel with a notch, and the joint is an opening 503 . Such as Figure 5 As shown, the multi-layer laminated damping shock absorber 5 of the open interface structure of the present invention has 8 laminated layers, and the installation angle at the interface can be evenly spaced at 360° / 8=45°, or as Figure 5 The intervals shown are 90 degrees in sequence, and the positions of the interfaces are shown in 513-520, so that the requirements of structural isotropy and easy installation can be met at the same time. The number of steel sheet layers should be an integer multiple of the natural number four, such as Figure 6 shown.

[0026] The open structure has greater elas...

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Abstract

The invention discloses a multilayer-laminated damper which is formed by nesting a plurality of concentric cylindrical steel rings made of multiple layers of coiled thin steel sheets. The thin steel sheets can be made of structural steel or spring steel. Each thin steel sheet which is unfolded is rectangular, and is cylindrical after being coiled. The joint of each coiled cylindrical steel sheet can be closed or open. The nesting way requires the fact that length difference of each two adjacent rectangular steel sheets is 2Pi times of the thickness of each steel sheet. Mounting positional angles of the joints need to be peripherally arranged at equal angular intervals according to the number of layers of the steel sheets. When the number of the layers of the steel sheets is an integral multiple of 4, the mounting positional angles of the joints can be arranged at intervals of 90 degrees sequentially. The multilayer-laminated damper is simple in structure, convenient to mount, reliable in performance and capable of meeting shock absorption needs of a rotor system under different work conditions.

Description

technical field [0001] The invention belongs to the technical field of rotor power machinery vibration reduction, and relates to a multi-layer laminated damping vibration absorber, in particular to a damping vibration reduction device used in an aeroengine or a gas turbine rotor system. Background technique [0002] In the design of rotor power machinery, the rotor vibration reduction design is one of the key technologies related to the success of the whole machine design. In the modern design, the combination of elastic support and various damping structures is often used to ensure the stability of the rotor. According to the vibration control method, it can be divided into active control and passive vibration reduction. The former often needs to be combined with an electronic control device to monitor the rotor state in real time, predict the state, take measures to prevent and control, etc., to achieve the effect of suppressing vibration in advance. Its cost is high, an...

Claims

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Application Information

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IPC IPC(8): F16F7/00F16F1/02
Inventor 陈巍郭宝亭
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI