Method and device for suppression of vibration of rotor system with elastic support

A technology of elastic support and suppression band, which is applied in the field of machinery, can solve the problems of dry friction damping and rotor system vibration reduction, and achieve the effect of preventing instability vibration, broad application prospects, and easy control of damping

Inactive Publication Date: 2005-08-24
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no one has yet combined the problem of dry friction damping with vibration damping of the rotor system

Method used

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  • Method and device for suppression of vibration of rotor system with elastic support
  • Method and device for suppression of vibration of rotor system with elastic support
  • Method and device for suppression of vibration of rotor system with elastic support

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Embodiment Construction

[0018] In this embodiment, external damping caused by dry friction is introduced into the rotor system to reduce the vibration of the rotor system when passing a critical speed and improve the stability of the rotor system.

[0019] In this embodiment, according to the structure of the rotor system, a corresponding dry friction damper is designed, and a widely used squirrel-cage elastic support structure is adopted to establish a dry friction damper with a spring as force. In this embodiment, the relative motion between the dynamic and static friction plates in the dry friction damper is used to generate friction to provide external damping to the rotor system. The working method is that when the rotor does not vibrate, the elastic support is in a static state, and the If there is no relative displacement, there will be no friction; when the rotor vibrates, relative displacement will occur between the dynamic friction plate and the static friction plate on the elastic support e...

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Abstract

The invention is a method for preventing rotator system variation with flexible support and its device, aiming at solving the problems of high accuracy requirement and hard technique, by the relative movement of movable friction disc and still friction disc in dry friction damper to create frictional force, bring outer damping into the rotator system to decreased its variation in critical rotational speed, so that its stability is improved. The concrete method includes: mount movable friction disc and still friction disc onto axial, through pressure carried by force applicating and adjusting the pressure to change the damper value. After bringing into dry friction damper, the variation of rotator in critical rotational speed as well as its vibration can be prevented effectively; it has simple structure.

Description

(1) Technical field: [0001] The invention relates to the mechanical field, and relates to a method and a device for suppressing vibration of a rotor system with elastic support. (2) Technical background: [0002] With the rapid development of modern industrial technology, a large number of rotor systems adopt flexible rotor design. Since the elastic support can reduce the critical speed of the rotor and has a certain support and damping effect, it has been widely used in flexible rotors, especially in the field of aerodynamic engineering. Most modern aeroengines use flexible rotors with elastic support structures. design. However, the use of an elastic support structure also brings corresponding problems. When the rotor passes the critical speed, the elastic support will have a large deformation. The problem is transformed into the deformation and strength of the supporting structure. Therefore, it is very necessary to introduce external damping in the system to reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/08F16F15/02
Inventor 廖明夫范天宇杨伸记
Owner NORTHWESTERN POLYTECHNICAL UNIV
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