A kind of magneto-rheological damper tuning mass up-frequency energy feeding method and damper
A magneto-rheological damper and tuning mass technology, applied in the direction of shock absorber, shock absorber, vibration suppression adjustment, etc., can solve the problem of low energy collection efficiency, and achieve compact and reliable structure, reasonable transmission and utilization, and energy feedback high efficiency effect
Active Publication Date: 2019-08-23
NORTHEASTERN UNIV LIAONING
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[0004] Aiming at the disadvantages that magnetorheological tuned mass dampers need external power supply and energy collection efficiency is not high in low frequency environment, the invention proposes a method for up-frequency energy feeding of tuned mass dampers of magnetorheological dampers and the damper
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[0018] The present invention will be further described below in conjunction with the accompanying drawings. like figure 1 As shown, the present invention includes an elastic diaphragm 1, a piezoelectric material sheet 2, a magnetorheological elastomer 3, a piston 4, a piston rod 5, a connecting support 6, an upper end cover 7, an impact head 8, a cylinder wall 9, and an induction coil 10 and the lower end cover 11; the cylinder body is filled with magnetorheological elastomer 3, which can be made of silicon-based rubber and nano-sized hydroxyl iron powder. Both ends of the piston rod 5 protrude from the cylinder body; one end is connected to the main vibration structure through the connecting support 6, and the other end is provided with an impact head 8. A piston 4 is arranged on the piston rod and slides in the cylinder body. The piston 4 is provided with an annular groove, and an induction coil 10 is wound in the groove, and a wire is connected to the induction coil 10 . ...
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The invention discloses a method for up-conversion energy feeding of a tuned mass of a magnetorheological damper and the damper. The damper mainly comprises a piston rod, a piston and a cylinder block; a main vibrating structure and the piston are connected through the piston rod; an induction coil is arranged on the piston; and the cylinder block is filled with magnetorheological elastomers. A controllable electromagnetic field is produced through control on the current of the induction coil, so that the rigidity and the damping of the damper are adjusted. The cylinder block used as the tunedmass produce the inertia force reacting on the main vibrating structure, so that the purpose of reducing and even eliminating vibration of the main vibrating structure is achieved. An impact head isarranged at the tail end of the piston rod, an annular elastic membrane is fixed to the cylinder block, a piezoelectric material sheet is arranged on the elastic membrane, when the piston rod moves relative to the cylinder block, the impact head collides with the elastic membrane to produce high-frequency self-excited vibration, the piezoelectric material is subjected to high-frequency pulling andcompression, and efficient conversion of vibration energy is realized. The method and the damper have the advantages as follows: 1, targeted delivery of energy is realized; 2, the structure is compact and reliable; 3, the energy feeding efficiency is relatively high.
Description
technical field [0001] The invention relates to an engineering structure vibration control technology, in particular to a tuned mass damper. Background technique [0002] The tuned mass damper technology is a mature structural passive control technology. The tuned mass damper is composed of a mass, a spring and a damping system. The design parameters adjust the vibration frequency to the vicinity of the frequency of the main vibration structure, and change the resonance characteristics of the structure to achieve vibration reduction. It is widely used to control the response of high-rise structures and bridges under earthquake and wind vibration. This passive control technology is simple to implement and highly reliable, but its drawback is that the tuned mass damper cannot be adjusted according to changes in structural characteristics and load characteristics, so it cannot guarantee the best control effect. Magnetorheological damper technology provides a new model for vari...
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IPC IPC(8): F16F13/00F16F9/53F16F9/50F16F9/32
Inventor 史啸天李鹤
Owner NORTHEASTERN UNIV LIAONING