【摘要】 利用大型分析软件ANSYS建立输电塔有限元模型,并对模型进行简化,从中提取模型的质量矩阵和刚度矩阵,然后基于遗传算法对输电塔简化模型进行自主研发的GMM(Giant MagnetostrictiveMaterial)主动杆件布置位置的优化计算,得出不同数量的GMM主动杆件在输电塔抗震控制中的最优布置位置。同时采用LQR算法对比分析了在一维和三维El-Centro地震波作用下有、无减震控制措施的输电塔位移和加速度地震响应。通过有关参数分析计算,分析表明采取GMM主动杆件进行主动控制能明显衰减输电塔模型的地震响应,具有比较理想的减震效果。更多还原

【Abstract】 A power transmission tower model simplified was created with the analysis software ANSYS,the mass matrix and stiffness one of the model were obtained.And then,the GMM(giant magnetostrictive material) actuators layout of the simplified model was optimized based on a genetic algorithm,the optimal placements of different number of GMM actuators were calculated.At the same time,the power transmission tower seismic responses including displacements and accelerations with vibration control and no vibration control under the action of 1-D and 3-D El-Centro seismic waves were analyzed using LQR algorithm.Based on the related parametric analysis,the results showed that the power transmission tower seismic responses can be significantly reduced using GMM actuators with active vibration control ability,and they have ideal vibration-reduction effect.更多还原