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Self-resetting sliding friction damper based on SMA
The invention discloses a self-resetting sliding friction damper based on SMA. A cover plate and a center clamping plate are connected through SMA bolts, through the design of inclined planes on the cover plate and the center clamping plate, when the damper is pressed or pulled, the center clamping plate slides inwards or outwards horizontally, the inclined planes drive the cover plate to move outwards, and therefore the SMA bolts are pulled. The energy dissipation capacity of the damper is composed of two parts, namely friction energy dissipation between the inclined planes and SMA bolt deformation energy dissipation. The inclination angle of the inclined plane is adjusted during design, and the proportional relation between the deformation of the damper and the tensile deformation of theSMA bolt is changed, so that displacement amplification is realized. In the deformation process of the damper, other components except the SMA bolt are all in the elastic stage, and due to the uniquesuperelasticity of the SMA material, residual deformation does not exist in the SMA bolt in the loading and unloading process of the damper. By applying the pre-tightening force to the SMA bolt, thedamper can have high initial rigidity.
本发明公开了一种基于SMA自复位滑动摩擦阻尼器，使用SMA螺栓将盖板和中心夹板螺栓连接，通过盖板和中心夹板上的斜面设计，使阻尼器受压或受拉时，中心夹板向内或向外水平滑动，斜面带动盖板外移，从而使SMA螺栓受拉。阻尼器的耗能能力由两部分组成，斜面间摩擦力耗能和SMA螺栓变形耗能。通过设计时调整斜面倾角角度大小，改变阻尼器的变形大小和SMA螺栓受拉变形大小两者之间的比例关系，从而实现位移的放大。阻尼器变形过程中，除SMA螺栓外其他构件均处于弹性阶段，而SMA螺栓由于SMA材料本身独特的超弹性，在阻尼器加载及卸载过程中不会存在残余变形。通过对SMA螺栓施加预紧力，可以使该阻尼器具有较高初始刚度。
Self-resetting sliding friction damper based on SMA
The invention discloses a self-resetting sliding friction damper based on SMA. A cover plate and a center clamping plate are connected through SMA bolts, through the design of inclined planes on the cover plate and the center clamping plate, when the damper is pressed or pulled, the center clamping plate slides inwards or outwards horizontally, the inclined planes drive the cover plate to move outwards, and therefore the SMA bolts are pulled. The energy dissipation capacity of the damper is composed of two parts, namely friction energy dissipation between the inclined planes and SMA bolt deformation energy dissipation. The inclination angle of the inclined plane is adjusted during design, and the proportional relation between the deformation of the damper and the tensile deformation of theSMA bolt is changed, so that displacement amplification is realized. In the deformation process of the damper, other components except the SMA bolt are all in the elastic stage, and due to the uniquesuperelasticity of the SMA material, residual deformation does not exist in the SMA bolt in the loading and unloading process of the damper. By applying the pre-tightening force to the SMA bolt, thedamper can have high initial rigidity.
本发明公开了一种基于SMA自复位滑动摩擦阻尼器，使用SMA螺栓将盖板和中心夹板螺栓连接，通过盖板和中心夹板上的斜面设计，使阻尼器受压或受拉时，中心夹板向内或向外水平滑动，斜面带动盖板外移，从而使SMA螺栓受拉。阻尼器的耗能能力由两部分组成，斜面间摩擦力耗能和SMA螺栓变形耗能。通过设计时调整斜面倾角角度大小，改变阻尼器的变形大小和SMA螺栓受拉变形大小两者之间的比例关系，从而实现位移的放大。阻尼器变形过程中，除SMA螺栓外其他构件均处于弹性阶段，而SMA螺栓由于SMA材料本身独特的超弹性，在阻尼器加载及卸载过程中不会存在残余变形。通过对SMA螺栓施加预紧力，可以使该阻尼器具有较高初始刚度。
Self-resetting sliding friction damper based on SMA
一种基于SMA自复位滑动摩擦阻尼器
QIU CANXING (author) / LIU JIAWANG (author) / DU XIULI (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
E04H
Gebäude oder ähnliche Bauwerke für besondere Zwecke
,
BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES
/
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
Self-resetting swing column based on SMA sliding friction damper
| European Patent Office | 2023