Particles-impact damper with elastic support

Abstract

The invention relates to a particles-impact damper with an elastic support. The inner part of the particles-impact damper is provided with an elastic energy-storage component and a plastic impact energy-dissipation component. The invention is characterized in that the particles-impact damper is connected with a controlled main system through the elastic support and the natural vibration frequency of the particles-impact damper is not greater than that of the controlled main system. The elastic support can be a spiral spring, a plate spring or an elastic cushion; and free movement direction of the elastic support is identical to the vibration direction of the controlled main system. The particles-impact damper can effectively reduce acceleration in impact process and decrease impact on the controlled main system so as to consume vibration energy of the controlled main system to the maximum extent, reduce the energy retransmission to the controlled main system and alleviate the impact of ultraharmonics and subharmonic. The particles-impact damper can be applied to the vibration control of nonlinear systems with low frequency and dense modes.

Description

technical field [0001] The invention relates to a particle collision damper with elastic support, which belongs to the technical field of vibration control. Background technique [0002] Collision damping belongs to the vibration passive control technology, which uses the collision between the free mass (impactor) and the main system during the vibration process to control the response of the main system. Due to the simple structure of the collision damper, low cost, easy implementation, no power supply, suitable for use in harsh environments and good vibration reduction effect, the research on collision damping has recently developed rapidly and has been widely used in machine tools, turbomachinery, It has been widely used in vibration control in the fields of robots, automobiles, spaceships and high-rise buildings. At present, representative collision damping mainly includes: single-body collision damping, bean bag collision damping, multi-body collision damping, particle...

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a particle impact damper with elastic support, which can not only overcome the disadvantage that the traditional impact damper cannot effectively dissipate vibration energy, but also overcome the excessive impact of the impact damper with particle shock absorbers on the main system. The shortcoming of the peak acceleration, the present invention not only effectively reduces the acceleration in the collision process, reduces the impact on the main system, but also consumes the vibration energy of the main system to the greatest extent; reduces the retransmission of energy to the main system, and reduces the Wave and Subharmonic Effects

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