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A platform for research: civil engineering, architecture and urbanism
Multi-stage variable-damping variable-inertia mass viscous damper
The invention provides a multi-stage variable-damping variable-inertia mass viscous damper. The multi-stage variable-damping variable-inertia mass viscous damper comprises an outer sleeve, a piston rod, a variable-damping assembly, a variable-inertia assembly, a negative stiffness spring and an SMA alloy wire. The variable damping assembly and the variable inertia assembly are linked through the piston rod, dual control over acceleration and displacement under different vibration amplitudes is achieved, and the variable damping assembly achieves the multi-stage energy dissipation effect through the specific inner and outer sleeve design; the variable inertia assembly realizes different degrees of damping amplification effects by adjusting the number of inertia mass blocks participating in work. Under the condition that the space is limited, the overall rigidity of the damper is reduced through the negative rigidity springs, the same working frequency range is kept, meanwhile, the mass and size of the inertia mass block can be properly reduced, and the economical efficiency and practicability of the damper are improved; under the condition that the space is not limited, effective control over lower-frequency vibration is achieved through the negative stiffness design, the vibration control frequency range of the damper is widened, and the functionality of the damper is improved. In addition, the self-resetting function is achieved through the SMA alloy wires, and it is ensured that the device recovers to the initial state after vibration.
本发明提供了一种多阶段变阻尼变惯性质量粘滞阻尼器，包括外套筒、活塞杆、变阻尼组件、变惯性组件、负刚度弹簧和SMA合金丝。本发明通过活塞杆联动变阻尼和变惯性组件，实现了不同振动幅度下对加速度和位移的双重控制，其中变阻尼组件通过特有的内外套筒设计实现多级能量耗散的效果，变惯性组件则通过调节参与工作的惯性质量块数量实现不同程度的阻尼放大作用。在空间受限的情况下，阻尼器通过负刚度弹簧降低阻尼器整体刚度，保持相同的工作频率范围的同时，可适当减小惯性质量块的质量和大小，提升了阻尼器的经济性和实用性；在空间不受限的情况下，负刚度设计实现了对更低频振动的有效控制，拓宽了阻尼器振动控制频率范围，提升了阻尼器的功能性。此外，SMA合金丝实现了自复位功能，确保装置在振动后恢复初始状态。
Multi-stage variable-damping variable-inertia mass viscous damper
The invention provides a multi-stage variable-damping variable-inertia mass viscous damper. The multi-stage variable-damping variable-inertia mass viscous damper comprises an outer sleeve, a piston rod, a variable-damping assembly, a variable-inertia assembly, a negative stiffness spring and an SMA alloy wire. The variable damping assembly and the variable inertia assembly are linked through the piston rod, dual control over acceleration and displacement under different vibration amplitudes is achieved, and the variable damping assembly achieves the multi-stage energy dissipation effect through the specific inner and outer sleeve design; the variable inertia assembly realizes different degrees of damping amplification effects by adjusting the number of inertia mass blocks participating in work. Under the condition that the space is limited, the overall rigidity of the damper is reduced through the negative rigidity springs, the same working frequency range is kept, meanwhile, the mass and size of the inertia mass block can be properly reduced, and the economical efficiency and practicability of the damper are improved; under the condition that the space is not limited, effective control over lower-frequency vibration is achieved through the negative stiffness design, the vibration control frequency range of the damper is widened, and the functionality of the damper is improved. In addition, the self-resetting function is achieved through the SMA alloy wires, and it is ensured that the device recovers to the initial state after vibration.
本发明提供了一种多阶段变阻尼变惯性质量粘滞阻尼器，包括外套筒、活塞杆、变阻尼组件、变惯性组件、负刚度弹簧和SMA合金丝。本发明通过活塞杆联动变阻尼和变惯性组件，实现了不同振动幅度下对加速度和位移的双重控制，其中变阻尼组件通过特有的内外套筒设计实现多级能量耗散的效果，变惯性组件则通过调节参与工作的惯性质量块数量实现不同程度的阻尼放大作用。在空间受限的情况下，阻尼器通过负刚度弹簧降低阻尼器整体刚度，保持相同的工作频率范围的同时，可适当减小惯性质量块的质量和大小，提升了阻尼器的经济性和实用性；在空间不受限的情况下，负刚度设计实现了对更低频振动的有效控制，拓宽了阻尼器振动控制频率范围，提升了阻尼器的功能性。此外，SMA合金丝实现了自复位功能，确保装置在振动后恢复初始状态。
Multi-stage variable-damping variable-inertia mass viscous damper
多阶段变阻尼变惯性质量粘滞阻尼器
WU QIAOYUN (author) / DENG RUYUE (author) / SUN JUBO (author) / LI JIAJING (author) / ZHAO CHENG (author) / WANG SIQI (author)
2024-11-26
Patent
Electronic Resource
Chinese
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