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Low-frequency vertical tuned mass damper with negative stiffness nonlinear energy trap
The invention discloses a low-frequency vertical tuned mass damper with a negative stiffness nonlinear energy trap, and belongs to the technical field of structural vibration control. The tuned mass damper comprises a bottom plate, a thrust bearing, a spiral spring, a ball screw, a ball nut, a mass block, a moving permanent magnet set, a fixed steel plate, a fixed permanent magnet set, a sliding bearing and a copper flywheel. The tuned mass damper has the negative stiffness nonlinear energy trap characteristic by utilizing the nonlinearity of the attraction force between the moving permanent magnet set and the fixed permanent magnet set; the equivalent vibration mass of the tuned mass damper is amplified through a ball screw type inerter mechanism, the vibration reduction effect of the tuned mass damper is improved, and meanwhile the problem that the net elongation of a spring of an ultralow-frequency vertical tuned mass damper is too large is solved. The low-frequency vertical tuned mass damper integrates the advantages of a nonlinear energy trap and a tuned mass damper, and broadens the control frequency band of the tuned mass damper; and meanwhile, the durability of the low-frequency vertical tuned mass damper is improved by adopting an eddy current damping technology.
本发明公开了一种具有负刚度非线性能量阱的低频竖向调谐质量阻尼器，属于结构振动控制技术领域，所述的调谐质量阻尼器包括底板、推力轴承、螺旋弹簧、滚珠丝杆、滚珠螺母、质量块、运动永磁体组、不动钢板、固定永磁体组、滑动轴承和铜质飞轮组成；本发明利用运动永磁体组和固定永磁体组之间吸引力的非线性使装置具有负刚度非线性能量阱特征；采用滚珠丝杠式惯容机构放大了调谐质量阻尼器的等效振动质量，在提升调谐质量阻尼器减振效果的同时，解决超低频竖向调谐质量阻尼器弹簧净伸长过大的问题；该装置融合了非线性能量阱和调谐质量阻尼器的优势，拓宽了调谐质量阻尼器的控制频带；同时采用电涡流阻尼技术，提升了装置的耐久性。
Low-frequency vertical tuned mass damper with negative stiffness nonlinear energy trap
The invention discloses a low-frequency vertical tuned mass damper with a negative stiffness nonlinear energy trap, and belongs to the technical field of structural vibration control. The tuned mass damper comprises a bottom plate, a thrust bearing, a spiral spring, a ball screw, a ball nut, a mass block, a moving permanent magnet set, a fixed steel plate, a fixed permanent magnet set, a sliding bearing and a copper flywheel. The tuned mass damper has the negative stiffness nonlinear energy trap characteristic by utilizing the nonlinearity of the attraction force between the moving permanent magnet set and the fixed permanent magnet set; the equivalent vibration mass of the tuned mass damper is amplified through a ball screw type inerter mechanism, the vibration reduction effect of the tuned mass damper is improved, and meanwhile the problem that the net elongation of a spring of an ultralow-frequency vertical tuned mass damper is too large is solved. The low-frequency vertical tuned mass damper integrates the advantages of a nonlinear energy trap and a tuned mass damper, and broadens the control frequency band of the tuned mass damper; and meanwhile, the durability of the low-frequency vertical tuned mass damper is improved by adopting an eddy current damping technology.
本发明公开了一种具有负刚度非线性能量阱的低频竖向调谐质量阻尼器，属于结构振动控制技术领域，所述的调谐质量阻尼器包括底板、推力轴承、螺旋弹簧、滚珠丝杆、滚珠螺母、质量块、运动永磁体组、不动钢板、固定永磁体组、滑动轴承和铜质飞轮组成；本发明利用运动永磁体组和固定永磁体组之间吸引力的非线性使装置具有负刚度非线性能量阱特征；采用滚珠丝杠式惯容机构放大了调谐质量阻尼器的等效振动质量，在提升调谐质量阻尼器减振效果的同时，解决超低频竖向调谐质量阻尼器弹簧净伸长过大的问题；该装置融合了非线性能量阱和调谐质量阻尼器的优势，拓宽了调谐质量阻尼器的控制频带；同时采用电涡流阻尼技术，提升了装置的耐久性。
Low-frequency vertical tuned mass damper with negative stiffness nonlinear energy trap
一种具有负刚度非线性能量阱的低频竖向调谐质量阻尼器
WANG HAO (author) / GAO HUI (author) / XING CHENXI (author) / WANG ZHIHAO (author) / ZHAO KAIYONG (author) / LIANG RUIJUN (author)
2020-05-12
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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