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Negative stiffness particle damper
The invention relates to the technical field of vibration control, and provides a negative stiffness particle damper which comprises a first connecting piece, a second connecting piece, an impeller assembly and a lead screw transmission assembly. The second connecting piece is movably arranged on the first connecting piece in the vibration direction, and a cavity is formed in the first connecting piece and used for being filled with particles; the lead screw transmission assembly comprises a lead screw and a nut, one end of the lead screw is connected with the impeller assembly, the other end of the lead screw extends in the vibration direction, the nut is arranged on the lead screw in a sleeving mode, and the nut is connected with the second connecting piece; under the condition that the first connecting piece and the second connecting piece move relatively, the second connecting piece is used for driving the impeller assembly to rotate through the lead screw transmission assembly so as to stir particles in the cavity; vibration in the linear direction is converted into rotation of the impeller assembly through the lead screw transmission assembly, so that particles in the cavity are stirred, stacking of the particles is avoided, resistance for stirring the particles is amplified, vibration energy is fully consumed, and the vibration reduction effect is improved.
本发明涉及振动控制技术领域，提供一种负刚度颗粒阻尼器，包括第一连接件、第二连接件、叶轮组件及丝杠传动组件；第二连接件沿振动方向可移动地设于第一连接件上，第一连接件内设有腔体，腔体内用于填充颗粒；丝杠传动组件包括丝杠与螺母，丝杠的一端与叶轮组件连接，丝杠的另一端沿振动方向延伸，螺母套设于丝杠上，螺母与第二连接件连接；在第一连接件与第二连接件之间相对移动的情况下，第二连接件用于通过丝杠传动组件带动叶轮组件转动，以搅动腔体内的颗粒；本发明通过丝杠传动组件将直线方向的振动转化为叶轮组件的转动，从而搅动腔体内的颗粒，避免了颗粒的堆叠，并将搅动颗粒的阻力放大，充分消耗了振动能量，提升了减振的效果。
Negative stiffness particle damper
The invention relates to the technical field of vibration control, and provides a negative stiffness particle damper which comprises a first connecting piece, a second connecting piece, an impeller assembly and a lead screw transmission assembly. The second connecting piece is movably arranged on the first connecting piece in the vibration direction, and a cavity is formed in the first connecting piece and used for being filled with particles; the lead screw transmission assembly comprises a lead screw and a nut, one end of the lead screw is connected with the impeller assembly, the other end of the lead screw extends in the vibration direction, the nut is arranged on the lead screw in a sleeving mode, and the nut is connected with the second connecting piece; under the condition that the first connecting piece and the second connecting piece move relatively, the second connecting piece is used for driving the impeller assembly to rotate through the lead screw transmission assembly so as to stir particles in the cavity; vibration in the linear direction is converted into rotation of the impeller assembly through the lead screw transmission assembly, so that particles in the cavity are stirred, stacking of the particles is avoided, resistance for stirring the particles is amplified, vibration energy is fully consumed, and the vibration reduction effect is improved.
本发明涉及振动控制技术领域，提供一种负刚度颗粒阻尼器，包括第一连接件、第二连接件、叶轮组件及丝杠传动组件；第二连接件沿振动方向可移动地设于第一连接件上，第一连接件内设有腔体，腔体内用于填充颗粒；丝杠传动组件包括丝杠与螺母，丝杠的一端与叶轮组件连接，丝杠的另一端沿振动方向延伸，螺母套设于丝杠上，螺母与第二连接件连接；在第一连接件与第二连接件之间相对移动的情况下，第二连接件用于通过丝杠传动组件带动叶轮组件转动，以搅动腔体内的颗粒；本发明通过丝杠传动组件将直线方向的振动转化为叶轮组件的转动，从而搅动腔体内的颗粒，避免了颗粒的堆叠，并将搅动颗粒的阻力放大，充分消耗了振动能量，提升了减振的效果。
Negative stiffness particle damper
负刚度颗粒阻尼器
MA RUISHENG (author) / BI KAIMING (author) / HAN CHENYANG (author) / DU XIULI (author)
2022-11-11
Patent
Electronic Resource
Chinese
| IEEE | 2020
Counterweight lever type negative stiffness friction damper
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