Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quasi-zero stiffness-inertia amplification type periodic structure
The invention relates to a quasi-zero stiffness-inertia amplification type periodic structure. The periodic structure comprises a base body plate (2) and a plurality of resonance units. The resonance unit comprises an outer sleeve (1), a rotating inner cylinder (3), a ball screw (4), a rotating nut (5), a flywheel (6), a vertical spring (7), a horizontal pre-compression spring (8) and a supporting piece (9); the resonance unit is connected with the substrate plate (2) through the outer sleeve (1); the supporting piece (9) is fixedly connected with and supports the ball screw (4) to move in the vertical direction, the vertical spring (7) is installed at the bottom of the supporting piece (9), and the horizontal pre-compression springs (8) are installed on the periphery of the supporting piece (9). Compared with the prior art, under the vibration effect, the equivalent dynamic stiffness is reduced, the inertia generated by the flywheel rotating and amplifying the physical mass is achieved, shielding and blocking of elastic waves in the ultra-low frequency band range are achieved, and the method has the advantages of being high in reliability, high in robustness and the like and can be applied to the field of noise reduction and vibration reduction of engineering structures such as houses, bridges and rail transit.
本发明涉及一种准零刚度‑惯性放大型周期结构，该周期结构包括基体板(2)和若干个谐振单元；所述谐振单元包括外套筒(1)、旋转内筒(3)、滚珠螺杆(4)、旋转螺母(5)、飞轮(6)、竖向弹簧(7)、水平预压缩弹簧(8)和支承件(9)；所述谐振单元通过外套筒(1)与基体板(2)连接；所述支承件(9)固接支承滚珠螺杆(4)在竖直方向上运动，底部安装有竖向弹簧(7)，四周安装有水平预压缩弹簧(8)。与现有技术相比，本发明在振动作用下，等效动刚度降低，飞轮旋转放大其物理质量产生的惯性，实现超低频段范围弹性波的屏蔽和阻断，具有可靠性高和鲁棒性强等优点，可应用于在房屋、桥梁和轨道交通等工程结构降噪减振领域。
Quasi-zero stiffness-inertia amplification type periodic structure
The invention relates to a quasi-zero stiffness-inertia amplification type periodic structure. The periodic structure comprises a base body plate (2) and a plurality of resonance units. The resonance unit comprises an outer sleeve (1), a rotating inner cylinder (3), a ball screw (4), a rotating nut (5), a flywheel (6), a vertical spring (7), a horizontal pre-compression spring (8) and a supporting piece (9); the resonance unit is connected with the substrate plate (2) through the outer sleeve (1); the supporting piece (9) is fixedly connected with and supports the ball screw (4) to move in the vertical direction, the vertical spring (7) is installed at the bottom of the supporting piece (9), and the horizontal pre-compression springs (8) are installed on the periphery of the supporting piece (9). Compared with the prior art, under the vibration effect, the equivalent dynamic stiffness is reduced, the inertia generated by the flywheel rotating and amplifying the physical mass is achieved, shielding and blocking of elastic waves in the ultra-low frequency band range are achieved, and the method has the advantages of being high in reliability, high in robustness and the like and can be applied to the field of noise reduction and vibration reduction of engineering structures such as houses, bridges and rail transit.
本发明涉及一种准零刚度‑惯性放大型周期结构，该周期结构包括基体板(2)和若干个谐振单元；所述谐振单元包括外套筒(1)、旋转内筒(3)、滚珠螺杆(4)、旋转螺母(5)、飞轮(6)、竖向弹簧(7)、水平预压缩弹簧(8)和支承件(9)；所述谐振单元通过外套筒(1)与基体板(2)连接；所述支承件(9)固接支承滚珠螺杆(4)在竖直方向上运动，底部安装有竖向弹簧(7)，四周安装有水平预压缩弹簧(8)。与现有技术相比，本发明在振动作用下，等效动刚度降低，飞轮旋转放大其物理质量产生的惯性，实现超低频段范围弹性波的屏蔽和阻断，具有可靠性高和鲁棒性强等优点，可应用于在房屋、桥梁和轨道交通等工程结构降噪减振领域。
Quasi-zero stiffness-inertia amplification type periodic structure
一种准零刚度-惯性放大型周期结构
LU ZHENG (Autor:in) / ZHANG JIAWEI (Autor:in) / LEE SUNG-HWA (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
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