Nested collision damper

Abstract

The invention provides a nested collision damper. The nested collision damper has the advantages that energy dissipation modes are various, and after friction layers are added into the nested collision damper on the basis that the original energy dissipation mode is kept, a friction energy dissipation mode becomes a main energy dissipation mode; impact on a system in a collision procedure can be effectively reduced while the momentum exchange and energy dissipated by collision cannot be reduced; energy of the system can be dissipated by collision which occurs on each layer of the nested particle collision damper, the quantity of nested layers can be freely increased or decreased according to the size and the shape of an actual structure, and accordingly the damper can be widely applied to various places, is convenient to install and simple in structure and can adapt to complicated working environments.

Description

technical field [0001] The invention belongs to the technical field of vibration control, and in particular relates to a nestable collision damper with multiple energy consumption modes. Background technique [0002] In the middle of the last century, a damper that permanently dissipates the energy of a vibrating structure appeared by adding an energy-dissipating device outside the mechanical structure. Since then, this kind of passive control damper without external energy consumption has become a research hotspot. Crash dampers and particle dampers are typical examples of passively controlled dampers that dissipate external energy. [0003] Collision dampers have been widely used after more than ten years of development. However, the traditional collision damping is based on the exchange of momentum, only a small amount of energy is dissipated during the collision, most of the energy is still transmitted in the main system, and it will impact the main system and generate...

AI Technical Summary

Problems solved by technology

[0004] However, the energy consumption mechanism of this damper is still mainly limited to impact energy consumption and plastic deformation energy consumption. The frictional energy consumption is mainly the movement between particles, and the point contact between particles is mainly, so the friction is not sufficient. Therefore, the friction energy consumption has not been fully utilized, and the low-frequency vibration and shock absorption effect is not good, and it will still cause an impact on the main system.

Different institutions need to be specially designed according to the actual situation of the institution, and the main disadvantages are not strong versatility.

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