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Magnetorheological multi-stage adjustable variable-inertance variable-damping device

A magnetorheological and variable damping technology, which is applied in vibration suppression adjustment, building components, shock absorbers, etc., can solve the problems of complex design structure, magnetorheological fluid cannot flow, and real-time adjustment of inertia coefficient cannot be realized. , to achieve the effect of inertial coefficient

Active Publication Date: 2020-05-22
EAST CHINA JIAOTONG UNIVERSITY
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Problems solved by technology

[0003] In the prior art, the inerter generally relies on an external hydraulic cylinder to change the fluidity of the magnetorheological fluid to achieve the special performance of the magnetorheological fluid, but such a design structure is relatively complicated, and the magnetorheological fluid may It is also impossible to achieve good flow, resulting in the inability to achieve precise real-time adjustment of the inertial coefficient, so it is very necessary to study a new type of magnetorheological inertial device

Method used

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  • Magnetorheological multi-stage adjustable variable-inertance variable-damping device

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0022] A magneto-rheological multi-stage adjustable inertia variable damping device provided by the present invention includes an outer sleeve 1, a first end cover 2, a second end cover 3, an outer sleeve 1, a first end cover 2 and a second end cover. The two end covers 3 form a built-in cavity 4, and the built-in cavity 4 includes a driving shear plate 5, a first driven shear plate 6, a second driven shear plate 7, a transmission shaft 8, a bearing 9, and a first yoke 10. The second magnetic yoke 11 and the MRF / MRG liquid chamber 12; for the magnetorheological fluid to play a characteristic role in the magnetic field. Further, a first electromagnetic coil 13, a left second electromagnetic coil 142, a right second electromagnetic coil 141, and a third electromagnetic coil are respectively arranged i...

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Abstract

The invention discloses a magnetorheological multi-stage adjustable variable-inertance variable-damping device. The viscosity of a magnetorheological fluid is changed by applying a current action in an electromagnetic coil, so that the change of shear damping force among a driving shear plate, a driven shear plate and the magnetorheological fluid is caused, and the multi-stage real-time adjustmentof an inertance coefficient and a damping coefficient of the device can be realized.

Description

technical field [0001] The invention relates to the technical field of damping devices, in particular to a magneto-rheological multi-stage adjustable inertia capacity variable damping device. Background technique [0002] Incentives such as earthquakes or typhoons will cause damage to buildings, bridges and other structures, resulting in casualties and direct or indirect serious economic losses. Recoverable and sustainable design is the current development goal of civil engineering structures. Active and Passive structure control technology plays a vital role in the response of structures under dynamic excitations such as earthquakes or typhoons. TMD is widely used in long-span bridges and high-rise buildings around the world, limited by mass ratio factors and TMD structures. Due to the uncertainty of dynamic characteristics and external excitation, the robustness of the TMD control system is reduced, and the MTMD structure can improve its robustness, but the configuration i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53F16F9/36E04B1/98E04H9/02E01D19/00
CPCE01D19/00E04H9/021F16F9/369F16F9/535
Inventor 黄永虎张红丽吕梦圆罗文俊
Owner EAST CHINA JIAOTONG UNIVERSITY
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