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Magnetic negative stiffness damper stay cable vibration reduction device and design method
The invention belongs to the technical field of engineering structure vibration control, and particularly relates to a magnetic negative stiffness damper stay cable vibration reduction device and a design method. The device comprises a supporting frame, a magnetic negative stiffness mechanism, a rotary eddy current damping mechanism and a transmission mechanism. The design method comprises the steps that the vibration frequency of a stay cable is determined; the mounting position of the stay cable vibration reduction device of the magnetic negative stiffness damper is determined; a stiffness parameter assembly of the stay cable vibration reduction device of the magnetic negative stiffness damper is designed; and a damping parameter assembly of the stay cable vibration reduction device of the magnetic negative stiffness damper is designed. The rotating speed of a rotary eddy current damping element is increased through a ball screw, and the energy consumption efficiency of the magnetic negative stiffness damper is improved; the quasi-constant negative stiffness overcomes the defect that an existing negative stiffness damper is difficult to design accurately due to the fact that the negative stiffness nonlinear characteristic is obvious; the negative stiffness effect of a magnetic negative stiffness element is amplified through the ball screw mechanism, and the multi-mode vibration control effect of the stay cable is effectively improved.
本发明属于工程结构振动控制技术领域，具体涉及一种磁致负刚度阻尼器斜拉索减振装置及设计方法，该装置包括支撑框架、磁致负刚度机构、旋转式电涡流阻尼机构和传动机构，设计方法包括确定斜拉索振动频率；确定磁致负刚度阻尼器斜拉索减振装置的安装位置；设计磁致负刚度阻尼器斜拉索减振装置的刚度参数组件；设计磁致负刚度阻尼器斜拉索减振装置的阻尼参数组件。本发明利用滚珠丝杠放大了旋转式电涡流阻尼元件的转速，提升了磁致负刚度阻尼器的耗能效率；“准恒定”负刚度克服了现有负刚度阻尼器因负刚度非线性特征明显而难以精准设计的缺陷；磁致负刚度元件的负刚度效应，通过滚珠丝杠机构得到放大，有效提升了斜拉索多模态振动控制效果。
Magnetic negative stiffness damper stay cable vibration reduction device and design method
The invention belongs to the technical field of engineering structure vibration control, and particularly relates to a magnetic negative stiffness damper stay cable vibration reduction device and a design method. The device comprises a supporting frame, a magnetic negative stiffness mechanism, a rotary eddy current damping mechanism and a transmission mechanism. The design method comprises the steps that the vibration frequency of a stay cable is determined; the mounting position of the stay cable vibration reduction device of the magnetic negative stiffness damper is determined; a stiffness parameter assembly of the stay cable vibration reduction device of the magnetic negative stiffness damper is designed; and a damping parameter assembly of the stay cable vibration reduction device of the magnetic negative stiffness damper is designed. The rotating speed of a rotary eddy current damping element is increased through a ball screw, and the energy consumption efficiency of the magnetic negative stiffness damper is improved; the quasi-constant negative stiffness overcomes the defect that an existing negative stiffness damper is difficult to design accurately due to the fact that the negative stiffness nonlinear characteristic is obvious; the negative stiffness effect of a magnetic negative stiffness element is amplified through the ball screw mechanism, and the multi-mode vibration control effect of the stay cable is effectively improved.
本发明属于工程结构振动控制技术领域，具体涉及一种磁致负刚度阻尼器斜拉索减振装置及设计方法，该装置包括支撑框架、磁致负刚度机构、旋转式电涡流阻尼机构和传动机构，设计方法包括确定斜拉索振动频率；确定磁致负刚度阻尼器斜拉索减振装置的安装位置；设计磁致负刚度阻尼器斜拉索减振装置的刚度参数组件；设计磁致负刚度阻尼器斜拉索减振装置的阻尼参数组件。本发明利用滚珠丝杠放大了旋转式电涡流阻尼元件的转速，提升了磁致负刚度阻尼器的耗能效率；“准恒定”负刚度克服了现有负刚度阻尼器因负刚度非线性特征明显而难以精准设计的缺陷；磁致负刚度元件的负刚度效应，通过滚珠丝杠机构得到放大，有效提升了斜拉索多模态振动控制效果。
Magnetic negative stiffness damper stay cable vibration reduction device and design method
一种磁致负刚度阻尼器斜拉索减振装置及设计方法
WANG ZHIHAO (Autor:in) / YIN GUANGZHAO (Autor:in) / LI XIN (Autor:in) / XU ZHOUYUAN (Autor:in) / CHENG ZHIPENG (Autor:in) / ZHAO YANG (Autor:in) / CUI XIN (Autor:in) / XU YANWEI (Autor:in) / XIONG KUN (Autor:in) / WANG TONGNING (Autor:in)
11.06.2021
Patent
Elektronische Ressource
Chinesisch
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