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

Nonlinear electromagnetic particle damper

A particle damper and particle damping technology, which is applied to building components, building types, earthquake resistance, etc., can solve the problems of limited particle movement ability and limited energy consumption capacity of collisions, so as to reduce peak displacement and peak acceleration and improve energy consumption Efficiency, easy recovery effect

Active Publication Date: 2020-01-14
TONGJI UNIV
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Particle dampers also have their own shortcomings. For example, the particles in the traditional particle damper are stacked together, which limits the movement ability of the particles. The collision between the particles and the cavity is mostly elastic collision, and the energy dissipation capacity of the collision is limited.

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
  • Nonlinear electromagnetic particle damper
  • Nonlinear electromagnetic particle damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A nonlinear electromagnetic particle damper, reference figure 1 , 2 , the damper as a whole is a spherical damper cavity structure 1 with a multi-layer structure, which sequentially includes a shell 10, a large permanent magnet 41, a small permanent magnet 42 and an inner cavity 7 from outside to inside, and the inner cavity 7 is provided with particles Group 5; two layers of electromagnetic particle damping mechanisms are arranged between the large permanent magnet 41 and the small permanent magnet 42; the electromagnetic particle damping mechanism is composed of alternately distributed particle damping units and buffer elements 3, and the particle damping units include particle tracks 2 and particle tracks 2 is provided with particle groups 5, and the buffer element 3 includes a lead-melting cavity 9 and variable stiffness spring groups 8 connected to both ends of the lead-melting cavity 9. The particle damping units and buffer elements 3 between the two layers of th...

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 a nonlinear electromagnetic particle damper. The damper is integrally of a cylindrical or spherical damper cavity structure (1) of a multilayer structure and sequentially comprises a shell (10), a large permanent magnet (41), a small permanent magnet (42) and an inner cavity (7) from outside to inside; the inner cavity (7) is provided with a particle group (5); and a multi-layer electromagnetic particle damping mechanism is arranged between the large permanent magnet (41) and the small permanent magnet (42). Compared with the prior art, for the nonlinear electromagnetic particle damper, by combining the advantages of a particle damper and electromagnetic energy consumption, energy dissipation in a mixed mode is realized with reaching complementary advantages, a novel damper, having the advantages of convenience in mounting, good energy consumption effect, wide damping frequency, capability of being used for multiple times and the like, is formed, and the nonlinear electromagnetic particle damper has engineering practical significance.

Description

technical field [0001] The invention relates to the field of vibration control of civil structures, in particular to a nonlinear electromagnetic particle damper. Background technique [0002] In recent years, the tuned mass damper (TMD) has been widely welcomed for its simple construction, convenient operation, and remarkable vibration reduction effect. At the same time, the tuned mass damper only has a certain vibration reduction effect in a specific frequency band, and the additional mass block is connected to the main structure through a suspension or a sliding support, which can only provide a natural vibration frequency in the horizontal direction. However, the vibration direction of wind / earthquake is random, which limits its practical application. The particle damper is also a passive damper with additional mass. Its principle is to consume the vibration energy of the system by the friction and impact of tiny particles filled in a limited closed space in the vibratin...

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): E04H9/02E04B1/98
CPCE04B1/98E04H9/02E04H9/021
Inventor 鲁正张家伟范俏巧
Owner TONGJI UNIV
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