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

Inerter unit and spring unit parallel connection ternary vibration reducing device and design and assembling method

A technology of spring unit and vibration damping device, which is applied in the direction of spring/shock absorber, spring, magnetic spring, etc., to achieve the effect of simple structure, improved eddy current damping coefficient, and easy disassembly and assembly

Active Publication Date: 2019-01-08
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to literature and patent review, some scholars have carried out relevant research on the following three structural forms of ternary damping devices: 1) Wen (Design and Evaluation of Tuned Inerter-Based Dampers for the Seismic Control of MDOF Structures) adopts H 2 The gradient method obtained the optimal parameter optimization of TVMD and TID applied to the vibration damping of multi-degree-of-freedom structural systems; 2) Ikago (Seismic control of single-degree-of-freedom structure using tuned viscous mass damper) carried out TVMD Vibration control test; 3) Asai (Outrigger tuned inertial mass electromagnetic transducers for high-rise buildings subject to long period earthquakes) proposed a physical map of a TEMD device; 4) Lazar (Using An Inerter-based Device for Structural Vibration Suppression) proposed a 5) Giaralis and Taflanidis (Optimal Tuned Mass-damper-inerter (TMDI) Design for Seismically Excited MDOF Structures with Model Uncertainties Based on Reliability Criteria) adopted the reliability method to optimize the parameters of TMDI and TID; 6) Publication No. CN 107419945 A proposed a ternary damping device in series with viscous damping, tension-compression spring and inertial flywheel; but the above scholars None of the studies and explorations have been carried out on the ternary vibration damping device with parallel inertial and spring units

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
  • Inerter unit and spring unit parallel connection ternary vibration reducing device and design and assembling method
  • Inerter unit and spring unit parallel connection ternary vibration reducing device and design and assembling method
  • Inerter unit and spring unit parallel connection ternary vibration reducing device and design and assembling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as Figure 1 to Figure 6 As shown, a ternary damping device of a parallel inertial mass and spring unit in this embodiment includes a spring unit, a damping unit and an inertial mass unit, and the inertial mass unit and the spring unit are connected in parallel with the damping unit in series; the The damping unit includes a first ball screw system, multiple conductor plates 5, two E-shaped iron cores 4 and multiple sets of first energized coils 21. In this embodiment, the number of conductor plates 5 is three, and they are arranged parallel to each other. , the shape is a circular plate, the first energized coil 21 adopts four groups, the first ball screw system includes the first ball screw 23 and the first ball nut 2 sleeved on the first ball screw 23, the said The first ball screw 23 passes through the first ball nut 2 and the conductor plate 5 sequentially from top to bottom; the inertia unit includes a second ball screw system and a flywheel 19, and the secon...

Embodiment 2

[0077] Embodiment 2. This embodiment provides a calculation example of the design method of a ternary vibration damping device with parallel inertia and spring units, specifically:

[0078] Yueyang Dongting Lake Bridge is located at the interface between Dongting Lake and the Yangtze River. It is a super-large highway bridge connecting Yueyang and Huarong, with a total length of 5747.82m. A total of 222 cables are arranged on the whole bridge. After testing, the A11 cable force downstream of the Yueyang side tower is 3095N, the first-order modal frequency is 1.11Hz, the cable length is 114.72m, and the unit mass is 51.8kg / m.

[0079] Taking the A11 cable as the damping object, the optimal design of the ternary damping device with parallel inertial mass and spring elements is carried out for the first-order mode: based on the finite difference method, a refined analysis model for the coupling system of the stay cable and the ternary damper is established , using the Runge-Kutta...

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 belongs to the technical field of structure vibration control and particularly relates to an inerter unit and spring unit parallel connection ternary vibration reducing device and a design and assembling method. The device comprises a spring unit, a damping unit and an inerter unit. The spring unit and the inerter unit are connected in parallel, and then the spring unit and the inerter unit are connected with the damping unit in series to form a ternary vibration reducing structure. By means of the inerter unit and spring unit parallel connection ternary vibration reducing deviceand the design and assembling method, two sets of ball screw transmission systems are adopted for achieving the inerter unit and spring unit parallel connection ternary vibration reducing structure,a turning effect can be achieved on damping force, the energy consumption capability of the damping unit is sufficiently developed, and the energy consumption and vibration reducing efficiency of thevibration reducing device is improved. In addition, an assembly technology is adopted, and the beneficial effects that adjusting is easy, durability is good, and the energy consumption capability is high are achieved.

Description

technical field [0001] The invention belongs to the technical field of structural vibration control, and in particular relates to a ternary damping device, a design and an assembly method of a parallel inertia mass and spring unit. Background technique [0002] In recent years, the theory of structural negative stiffness vibration control and the development of passive and adaptive dampers with parallel "negative stiffness spring units" have provided new theoretical methods and technical means for improving the effect of structural vibration control; the "Inerter" with mass amplification effect "(two-node inertial mass unit, referred to as "inertial mass unit") provides a new basic unit for the research and development of the damper, and the configuration of the damper has been further enriched, and finally formed a system based on the "damping unit-spring unit-inertial unit" The rudimentary form of the structural ternary passive vibration damping theory. Studies have shown...

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): F16F6/00F16F15/30G06F17/50
CPCF16F6/00F16F15/30G06F30/23G06F30/17Y02E60/16
Inventor 汪志昊赵洋吴泽玉崔欣尹光照田文文侯作云徐宙元樊步乔刘鑫鑫
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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