A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel variable stiffness spring frequency modulation TMD damping device and frequency modulation method thereof
The invention provides a novel variable-stiffness spring frequency modulation TMD damping device and a frequency modulation method thereof. The novel variable-stiffness spring frequency modulation TMD damping device comprises a bottom plate, a smooth layer, two baffles and a servo motor, and the smooth layer is fixedly arranged in the middle of the upper surface of the bottom plate; the two baffles are symmetrically and fixedly arranged at the two ends of the upper surface of the bottom plate relative to the smooth layer. A mass block is placed above the smooth layer, and the two sides of the mass block and each baffle are connected with a variable stiffness spring and a damping unit respectively; rollers are mounted at the bottom of the mass block; the servo motor is in transmission connection with the variable-stiffness spring and controls stiffness adjustment of the variable-stiffness spring. The vibration frequency of the device can be changed in real time by adjusting the spring stiffness, the frequency of the device is the same as that of a main structure, a better damping effect is achieved, and friction damping generated by movement is reduced through the rollers arranged at the bottom; the variable stiffness spring adjusts the vibration frequency of the device by controlling the rotation limiting ring, the TMD frequency is changed to be consistent with the main structure frequency, the device is suitable for more working conditions, and the good vibration reduction effect of the structure is guaranteed.
本发明提供一种新型变刚度弹簧调频TMD减震装置及其调频方法，包括：底板、平滑层、两个挡板、伺服电机，平滑层固定设置在底板上表面中部；两个挡板相对于平滑层对称地分别固设在底板上表面两端；平滑层上方放置有质量块，质量块两侧分别与每个挡板连接有变刚度弹簧和阻尼单元；质量块底部安装设置有滚轮；伺服电机与变刚度弹簧传动连接，伺服电机控制变刚度弹簧的刚度调整。本发明可调节弹簧刚度实时改变装置振动频率，使装置频率和主结构频率相同而达到更好减震效果，底部设有滚轮减少运动产生摩擦阻尼；变刚度弹簧通过控制转动限位环调整装置的振动频率，实现改变TMD频率达到和主结构频率一致，适用更多工况，保证了结构良好的减振效果。
Novel variable stiffness spring frequency modulation TMD damping device and frequency modulation method thereof
The invention provides a novel variable-stiffness spring frequency modulation TMD damping device and a frequency modulation method thereof. The novel variable-stiffness spring frequency modulation TMD damping device comprises a bottom plate, a smooth layer, two baffles and a servo motor, and the smooth layer is fixedly arranged in the middle of the upper surface of the bottom plate; the two baffles are symmetrically and fixedly arranged at the two ends of the upper surface of the bottom plate relative to the smooth layer. A mass block is placed above the smooth layer, and the two sides of the mass block and each baffle are connected with a variable stiffness spring and a damping unit respectively; rollers are mounted at the bottom of the mass block; the servo motor is in transmission connection with the variable-stiffness spring and controls stiffness adjustment of the variable-stiffness spring. The vibration frequency of the device can be changed in real time by adjusting the spring stiffness, the frequency of the device is the same as that of a main structure, a better damping effect is achieved, and friction damping generated by movement is reduced through the rollers arranged at the bottom; the variable stiffness spring adjusts the vibration frequency of the device by controlling the rotation limiting ring, the TMD frequency is changed to be consistent with the main structure frequency, the device is suitable for more working conditions, and the good vibration reduction effect of the structure is guaranteed.
本发明提供一种新型变刚度弹簧调频TMD减震装置及其调频方法，包括：底板、平滑层、两个挡板、伺服电机，平滑层固定设置在底板上表面中部；两个挡板相对于平滑层对称地分别固设在底板上表面两端；平滑层上方放置有质量块，质量块两侧分别与每个挡板连接有变刚度弹簧和阻尼单元；质量块底部安装设置有滚轮；伺服电机与变刚度弹簧传动连接，伺服电机控制变刚度弹簧的刚度调整。本发明可调节弹簧刚度实时改变装置振动频率，使装置频率和主结构频率相同而达到更好减震效果，底部设有滚轮减少运动产生摩擦阻尼；变刚度弹簧通过控制转动限位环调整装置的振动频率，实现改变TMD频率达到和主结构频率一致，适用更多工况，保证了结构良好的减振效果。
Novel variable stiffness spring frequency modulation TMD damping device and frequency modulation method thereof
一种新型变刚度弹簧调频TMD减震装置及其调频方法
TU JIANWEI (author) / KUANG BOFEI (author) / YANG CHEN (author)
2023-10-10
Patent
Electronic Resource
Chinese
Wave power generation device based on frequency modulation mass damping principle
| European Patent Office | 2021
Variable Stiffness and Instantaneous Frequency
| British Library Conference Proceedings | 1999