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基于所提出的新型压电摩擦阻尼器,利用ANSYS有限元软件对一高压输电塔进行了有限元建模,并通过超单元法与MATLAB编程相结合的方法提取了该输电塔结构的整体刚度、质量及阻尼矩阵;利用MATLAB中的SIMULINK仿真工具箱编制了适于该结构的半主动控制系统;最后,利用遗传算法工具箱对100个阻尼器的布置位置进行了优化,并结合所提出的半主动控制系统,对该输电塔在EL-Centro地震作用下进行了无控、阻尼器位置优化后有控及随机布置后有控的控制效果对比分析.结果表明,该阻尼器及半主动控制系统能够有效地对该高压输电塔进行振动控制,且经优化布置后的控制效果明显优于随机布置,表明利用遗传算法对阻尼器的布置位置进行优化是可行有效的.
Based on the proposed new piezoelectric friction damper, finite element method is used to simulate a high-voltage power transmission tower by finite element software ANSYS, and the overall stiffness of the transmission tower is extracted by combining the superelement method and MATLAB programming. Mass and damping matrix. The semi-active control system suitable for this structure was developed by SIMULINK simulation toolbox in MATLAB. Finally, the layout of 100 dampers was optimized by genetic algorithm toolbox, and combined with the proposed half Active control system is used to control the transmission tower uncontrolled by EL-Centro earthquake and the controlled position of the damper is compared with the control effect after random arrangement.The results show that the damper and semi-active control system Which can effectively control the vibration of the high voltage transmission tower. The optimized control effect is obviously better than random arrangement, which shows that it is feasible and effective to use genetic algorithm to optimize the position of the damper.