Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper

A magneto-rheological fluid and magnetic field coupling technology, applied in the direction of non-rotational vibration suppression, instruments, shock absorbers, etc., to achieve the effect of wide damping adjustment range, simple and compact structure, and compact structure

Active Publication Date: 2017-09-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Magnetorheological fluid is a new type of smart material with controllable rheological properties. It has excellent characteristics such as fast response (milliseconds), continuously adjustable damping, and low energy consumption. It has been widely used in the field of vibration control, but it is limited to magnetic Various dampers made of rheological fluid with adjustable damping characteristics under a single magnetic field

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper
  • Ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper
  • Ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Such as Figure 1-3 shown.

[0031] A rotating cylindrical magnetorheological fluid damper with coupling effect of ultrasonic field and magnetic field, which includes an ultrasonic near-field generating component (the finite element model of which is as follows figure 2 ) and an excitation component such as figure 1 As shown, eight piezoelectric ceramic sheets 20 are evenly distributed on the outer circle of the cylindrical stator 8, and the stator B(0,4) vibration mode is excited by electrification to apply an ultrasonic field to the magnetorheological fluid in the shear chamber 7, and the stator Component vibration modes such as image 3 . The clamping positions of the stator 8 are evenly distributed on the vibration node line position to reduce the interference to the vibration mode. In order to meet the sealing requirements, the piezoel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an ultrasonic field and magnetic field coupled rotary type barrel magnetorheological fluid damper. The ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper is characterized in that rectangle piezoelectric ceramic piece is pasted to the outer circle of a barrel type stator, electrification is carried out for vibrational excitation for obtaining the stator B(0,n) vibration mode, and an ultrasonic field is applied to magnetorheological fluid in a shearing cavity. The damper magnetorheological fluid works in the barrel type shearing mode, and large and reliable retarding torque can be generated on a rotation inputting rotating shaft. Under the zero magnetic field working mode, the ultrasonic field is applied to the magnetorheological fluid, and influences of magnetorheological fluid zero field damping on the rotating shaft can be reduced; and under the non-zero-field working mode, different excitation signals are controlled, ultrasonic fields and magnetic fields with different strengths can be generated, and therefore the magnetorheological fluid damping is accurately regulated, and the rotating shaft rotating speed and any angle can be accurately controlled. The ultrasonic field and magnetic field coupled rotary type barrel magnetorheological fluid damper is simple and compact, high in action response, wide in damping adjusting scope and premise in damping adjusting.

Description

technical field [0001] The present invention relates to the technology of manipulating and arranging microscopic particles in the ultrasonic near field and the application technology of magnetorheological fluid smart materials, in particular to the application technology of magnetic particles and rheological phenomena in magnetorheological fluid based on the coupling of ultrasonic near field and magnetic field and the application technology of magnetorheological fluid. Rheological fluid viscosity fine-tuning technology. Background technique [0002] Magnetorheological fluid is a new type of smart material with controllable rheological properties. It has excellent characteristics such as fast response (milliseconds), continuously adjustable damping, and low energy consumption. It has been widely used in the field of vibration control, but it is limited to magnetic The rheological fluid has adjustable damping characteristics under a single magnetic field to make various damper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53G01N11/00
CPCF16F9/535G01N11/00F16F2228/008F16F2234/02F16F2236/10
Inventor 陈超强璐升王均山王福飞菅磊
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com