A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Viscous damper based on piezoelectric variable friction
The invention provides a viscous damper based on piezoelectric variable friction. The viscous damper comprises a cylinder barrel, a piston is arranged in the cylinder barrel, the piston is connected with a piston rod, a laminated piezoelectric actuator is arranged in the piston, and the laminated piezoelectric actuator is perpendicular to the piston rod but not intersected with the piston rod. According to the viscous damper, the laminated piezoelectric actuator is arranged in the viscous damper, electric energy can be converted into mechanical energy under a direct piezoelectric effect, in other words, electric current is conducted on laminated piezoelectric ceramics, the deformation quantity of the piezoelectric ceramics is changed, stress acting on friction plates is changed, and therefore the force for pushing the piston rod is changed, the energy consumption of the viscous damper is increased, and meanwhile, additional rigidity can be given to a structure, and the structure is assisted in resisting external loads. The technology has the advantages of high flexibility, high stability, high precision, long service cycle and the like, and can be used for solving the problems that the viscous damper at low frequency is low in energy dissipation capacity and cannot provide extra rigidity for the structure.
本发明提供了一种基于压电变摩擦的粘滞阻尼器，包括缸筒，缸筒内安设有活塞，活塞连接有活塞杆，活塞的内部安置有叠层式压电驱动器，叠层式压电驱动器与活塞杆相互垂直但不相交。本发明通过在粘滞阻尼器的内部设置有叠层式压电驱动器，在正压电效应下可以将电能转化为机械能，即通过对叠层式压电陶瓷通电流，改变压电陶瓷的形变量，改变作用于摩擦片上的应力，从而改变推动活塞杆的力大小，增加粘滞阻尼器的耗能，同时可以给予结构额外的刚度，辅助结构抵挡外部荷载。该技术具有灵活性高、稳定性高，精度高，使用周期长等优点，可以用来改善低频下粘滞阻尼器耗能能力低，不能为结构提供额外刚度的问题。
Viscous damper based on piezoelectric variable friction
The invention provides a viscous damper based on piezoelectric variable friction. The viscous damper comprises a cylinder barrel, a piston is arranged in the cylinder barrel, the piston is connected with a piston rod, a laminated piezoelectric actuator is arranged in the piston, and the laminated piezoelectric actuator is perpendicular to the piston rod but not intersected with the piston rod. According to the viscous damper, the laminated piezoelectric actuator is arranged in the viscous damper, electric energy can be converted into mechanical energy under a direct piezoelectric effect, in other words, electric current is conducted on laminated piezoelectric ceramics, the deformation quantity of the piezoelectric ceramics is changed, stress acting on friction plates is changed, and therefore the force for pushing the piston rod is changed, the energy consumption of the viscous damper is increased, and meanwhile, additional rigidity can be given to a structure, and the structure is assisted in resisting external loads. The technology has the advantages of high flexibility, high stability, high precision, long service cycle and the like, and can be used for solving the problems that the viscous damper at low frequency is low in energy dissipation capacity and cannot provide extra rigidity for the structure.
本发明提供了一种基于压电变摩擦的粘滞阻尼器，包括缸筒，缸筒内安设有活塞，活塞连接有活塞杆，活塞的内部安置有叠层式压电驱动器，叠层式压电驱动器与活塞杆相互垂直但不相交。本发明通过在粘滞阻尼器的内部设置有叠层式压电驱动器，在正压电效应下可以将电能转化为机械能，即通过对叠层式压电陶瓷通电流，改变压电陶瓷的形变量，改变作用于摩擦片上的应力，从而改变推动活塞杆的力大小，增加粘滞阻尼器的耗能，同时可以给予结构额外的刚度，辅助结构抵挡外部荷载。该技术具有灵活性高、稳定性高，精度高，使用周期长等优点，可以用来改善低频下粘滞阻尼器耗能能力低，不能为结构提供额外刚度的问题。
Viscous damper based on piezoelectric variable friction
一种基于压电变摩擦的粘滞阻尼器
TU JIANWEI (author) / LIU JIALI (author) / ZHOU XINRU (author)
2021-09-24
Patent
Electronic Resource
Chinese