Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Piezoelectric variable friction damping system suitable for large-span space structure
The invention discloses a piezoelectric variable friction damping system suitable for a large-span space structure. The damping system comprises a damper, and the damper comprises a damper shell, a damper cover plate, a damper piston, a piezoelectric stack, a friction plate, spring baffles and springs; the damper piston comprises a sleeve and a piston rod, the bottom face of the sleeve is in contact with the bottom face of the damper shell to form a first friction pair, and the damper is connected into a structural rod piece through the damper shell and the piston rod; the piezoelectric stack is arranged in the sleeve; the friction plate is arranged between the piezoelectric stack and the damper cover plate, and the friction plate is in contact with the damper cover plate to form a second friction pair; and the spring baffles are arranged outside the left side wall and the right side wall of the sleeve respectively, and the springs are arranged between each spring baffle and the damper shell. By adjusting the surface voltage of the piezoelectric stack, the piezoelectric stack is extended or shortened in the normal directions of the upper surface and the lower surface, the normal pressure of the friction pair is changed, the friction force of the damper is changed, and effective suppression of vibration response of the large-span space structure is achieved.
本发明公开了一种适用于大跨空间结构的压电变摩擦阻尼系统，阻尼系统包括阻尼器，阻尼器包括阻尼器外壳、阻尼器盖板、阻尼器活塞、压电堆、摩擦片、弹簧挡板和弹簧；阻尼器活塞包括套筒和活塞杆，套筒的底面与阻尼器外壳的底面相接触组成第一摩擦副，阻尼器通过阻尼器外壳和活塞杆连接在结构杆件中；压电堆设置在套筒内；摩擦片设置在压电堆和阻尼器盖板之间，摩擦片与阻尼器盖板相接触组成第二摩擦副；套筒左、右侧壁的外部分别设置有弹簧挡板，每个弹簧挡板与阻尼器外壳之间设置有弹簧。本发明通过调节压电堆表面电压，使得压电堆沿上下表面法向伸长或缩短，改变摩擦副法向压力，从而改变阻尼器的摩擦力，实现大跨空间结构振动响应的有效抑制。
Piezoelectric variable friction damping system suitable for large-span space structure
The invention discloses a piezoelectric variable friction damping system suitable for a large-span space structure. The damping system comprises a damper, and the damper comprises a damper shell, a damper cover plate, a damper piston, a piezoelectric stack, a friction plate, spring baffles and springs; the damper piston comprises a sleeve and a piston rod, the bottom face of the sleeve is in contact with the bottom face of the damper shell to form a first friction pair, and the damper is connected into a structural rod piece through the damper shell and the piston rod; the piezoelectric stack is arranged in the sleeve; the friction plate is arranged between the piezoelectric stack and the damper cover plate, and the friction plate is in contact with the damper cover plate to form a second friction pair; and the spring baffles are arranged outside the left side wall and the right side wall of the sleeve respectively, and the springs are arranged between each spring baffle and the damper shell. By adjusting the surface voltage of the piezoelectric stack, the piezoelectric stack is extended or shortened in the normal directions of the upper surface and the lower surface, the normal pressure of the friction pair is changed, the friction force of the damper is changed, and effective suppression of vibration response of the large-span space structure is achieved.
本发明公开了一种适用于大跨空间结构的压电变摩擦阻尼系统，阻尼系统包括阻尼器，阻尼器包括阻尼器外壳、阻尼器盖板、阻尼器活塞、压电堆、摩擦片、弹簧挡板和弹簧；阻尼器活塞包括套筒和活塞杆，套筒的底面与阻尼器外壳的底面相接触组成第一摩擦副，阻尼器通过阻尼器外壳和活塞杆连接在结构杆件中；压电堆设置在套筒内；摩擦片设置在压电堆和阻尼器盖板之间，摩擦片与阻尼器盖板相接触组成第二摩擦副；套筒左、右侧壁的外部分别设置有弹簧挡板，每个弹簧挡板与阻尼器外壳之间设置有弹簧。本发明通过调节压电堆表面电压，使得压电堆沿上下表面法向伸长或缩短，改变摩擦副法向压力，从而改变阻尼器的摩擦力，实现大跨空间结构振动响应的有效抑制。
Piezoelectric variable friction damping system suitable for large-span space structure
一种适用于大跨空间结构的压电变摩擦阻尼系统
LU YAN (Autor:in) / LUO QIXING (Autor:in) / HAN QINGHUA (Autor:in) / LIU MINGJIE (Autor:in) / WANG LICHEN (Autor:in)
21.01.2022
Patent
Elektronische Ressource
Chinesisch
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