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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2010-08-01

发表刊物：JOURNAL OF VIBRATION AND CONTROL

收录刊物：Scopus、EI、SCIE

卷号：16

期号：9

页面范围：1379-1392

ISSN号：1077-5463

关键字：genetic algorithms; nonlinear benchmark structure; semi-active MR damper

摘要：Optimal placement of dampers for structural vibration control is both important and challenging. Though this issue is adequately addressed for linear structures in the literature, optimal placement of dampers for nonlinear structures is rarely studied. In this paper, a two-phase optimization process using genetic algorithms is proposed for the placement of semi-active MR dampers for a nonlinear benchmark structure. In the first phase, an optimization algorithm is used to obtain the active control force that is most suitable for semi-active implementation. In the second phase, the placement of semi-active MR dampers is optimized to mimic the optimal active control force obtained in the first phase. Simulation results show that the lower and upper stories will be the first choice for the placement of the dampers, and also the optimal number of the MR dampers for a structure is suggested in this paper.