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Parallel damping and spring unit ternary vibration reduction device, design method and assembling method

A technology of spring unit and vibration damping device, which is applied in the direction of spring/shock absorber, spring, shock absorber, etc., can solve the problems of reducing vibration of civil engineering structures, achieve the improvement of eddy current damping coefficient, simple structure, and easy disassembly The effect of pretending

Active Publication Date: 2019-01-04
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Application Information

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Problems solved by technology

[0005] According to relevant documents and patents, some scholars have conducted related research on the ternary damping configuration of parallel damping and spring units: 1) Wen (Design and Evaluation of Tuned Inerter-Based Dampers for the Seismic Control of MDOF Structures) uses H2 The gradient method obtained the optimal parameter optimization of TID applied to the vibration reduction of multi-degree-of-freedom structural systems; 2) Lazar (Using An Inerter-based Device for Structural Vibration Suppression) proposed a passive vibration control system with parallel damping and spring units to Reduce the vibration of civil engineering structures under foundation excitation; 3); Giaralis and Taflanidis (Optimal Tuned Mass-damper-inerter (TMDI) Design for Seismically Excited MDOF Structures with Model Uncertainties Based on Reliability Criteria) use the reliability method for TMDI and TID The parameters were optimized; but none of the above scholars proposed the ternary damping device technology and physical

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  • Parallel damping and spring unit ternary vibration reduction device, design method and assembling method
  • Parallel damping and spring unit ternary vibration reduction device, design method and assembling method
  • Parallel damping and spring unit ternary vibration reduction device, design method and assembling method

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Embodiment 1

[0051] like Figure 1 to Figure 6 As shown, a ternary damping device of a parallel damping and spring unit in this embodiment includes a spring unit, a damping unit and an inertial unit, and the damping unit and the spring unit are connected in parallel with the inertial unit in series; the inertial The mass unit includes a first ball screw system and a flywheel 22. The first ball screw system includes a first ball screw 23 and a first ball nut 2 sleeved on the first ball screw 23. The first ball The screw 23 passes through the first ball nut 2 and the flywheel 22 sequentially from top to bottom; the damping unit includes a second ball screw system, multiple conductor plates 19, two E-shaped iron cores 20 and multiple sets of first energized Coils 6, in this embodiment, the number of conductor plates 19 is three, and they are arranged parallel to each other. The shape is a circular plate. The first energized coils 6 use four groups. The second ball screw system includes a seco...

Embodiment 2

[0077] Embodiment 2. This embodiment provides a calculation example of the design method of a ternary damping device with parallel damping 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 damping and spring units 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 damping device is established, The Runge-Kutta method is used to...

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Abstract

The invention belongs to the technical field of structure vibration control, and particularly relates to a parallel damping and spring unit ternary vibration reduction device, a design method and an assembling method. The device comprises a spring unit, a damping unit and an inerter unit. The damping unit is connected with the spring unit in parallel through a connecting piece and then connected with the inerter unit in series to form a parallel damping and spring unit ternary vibration reduction structure. Two ball screw transmission systems are adopted, the parallel damping and spring unit ternary vibration reduction structure is formed, and the tuning function can be achieved for inertia force. Continuous adjustment of the inertia force can be achieved by changing the size of a flywheel, and the energy absorbing capability of the inerter unit can be brought into full play. In addition, the assembling technology is adopted in the device, and the advantages that adjustment 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, design and assembly method of a parallel damping 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 that comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/10F16F6/00
CPCF16F6/00F16F7/1011Y02E60/16
Inventor 汪志昊杨亚彬田文文程志鹏祁鑫王丽娟钱晓军朱倩仵祺刘鑫鑫
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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