电磁集能式调谐质量阻尼器的结构减震及能量收集分析

发布时间：2018-10-18 13:06

【摘要】：利用滚珠丝杆和永磁电机的能量收集单元代替传统型调谐质量阻尼器中的黏性阻尼,形成一种具有结构减震与能量收集两重功能的电磁集能式调谐质量阻尼器。通过引入滚珠丝杆机械构件,实现结构的水平往返运动转化为高效旋转运动的功能,并产生较大的惯性质量,有利于提高结构减震性能。通过分析滚珠丝杆力学性能,能量收集单元的动力学模型,建立了电磁集能式调谐质量阻尼器的力学模型。将电磁集能式调谐质量阻尼器与单自由度结构相结合,建立耦合结构受地震作用时的动力学模型,并仿真分析了此结构受El Centro地震作用时,电磁集能式调谐质量阻尼器对结构减震与能量收集的性能。结果表明,电磁集能式TMD对结构峰值位移和加速度的减振性能同于经典TMD,但结构位移与加速度均方值劣于经典TMD的减震性能;能量收集的平均功率约0.52 W。
[Abstract]:Instead of the viscous damping in the traditional tuned mass damper, the energy collection unit of the ball rod and permanent magnet motor is used to form an electromagnetic tuned mass damper with the dual functions of structural shock absorption and energy collection. By introducing the mechanical component of ball wire rod, the horizontal movement of the structure can be transformed into the highly efficient rotational motion, and the inertia mass will be produced, which is beneficial to the improvement of the vibration absorption performance of the structure. By analyzing the mechanical properties of the ball wire rod and the dynamic model of the energy collection unit, the mechanical model of the electromagnetic energy collecting tuned mass damper is established. The dynamic model of the coupled structure subjected to earthquake is established by combining the electromagnetic concentrated energy tuned mass damper and the single degree of freedom structure. The simulation results show that the structure is subjected to El Centro earthquake. The performance of electromagnetic tuned mass dampers for structural shock absorption and energy collection. The results show that the peak displacement and acceleration of the structure obtained by the electromagnetic energy collector TMD are similar to those of the classical TMD, but the mean square values of the displacement and acceleration of the structure are inferior to those of the classical TMD, and the average power of the energy collection is about 0.52 W.
【作者单位】：湖南科技大学土木工程学院;
【基金】：973计划项目(2015CB057701;2015CB057702) 国家自然科学基金(51508185) 湖南省自然科学基金(2015JJ3073)
【分类号】：TU352.1

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