Experimental Study of Tuned Mass Damper in Reducing Floor Vertical Vibration Due to Machinery

摘要：

Developments and applications of passive tuned mass dampers(TMD)to reduce structural responses against external dynamic loadings like earthquake have attracted many engineers’ attentions in recent years.TMD has merits of low interference and simple maintenance compared with other passive energy dissipation devices.Most researches on passive controls using TMD have focused on its performance and effectiveness in horizontal vibration control.Because the manufacturing equipments in the high-tech factories are vibration sensitive,there is a need to develop a device to mitigate machine-induced floor vertical vibration.This paper investigates experimentally the effectiveness of a passive tuned mass damper(PTMD)moving in vertical direction,named VTMD,in reducing floor vertical vibration under known machine’s loadings.The theoretical background and real applications to two real structures are presented.In addition,two prototype VTMDs are manufactured based on the field test data on a simply-supported steel beam and a two-story school building by the research group at National Chung Hsing University in Taiwan.According to the analysis results,both cases show that with the installation of VTMD,the absolute vertical accelerations are significantly decreased by 80％ for the steel beam and by 32～54％(based on various sensor locations)for the school building under harmonic machine loadings.These experimental results concluded the success of the proposed VTMD.

关键词： tuned mass damper machinery floor vibration field test

作者: M.L. Chang C.C. Lin J.M. Ueng K.H. Hsieh

作者单位: Ph.D Student,Department of Civil Engineering,National Chung Hsing University,Taichung,Taiwan Dean,College of Engineering,National Chung Hsing University,Taichung,Taiwan Associate Professor,Department of Civil Engineering,National Chung Hsing University,Taichung,Taiwan Postdoctoral Fellow,Center for Environmental Restoration and Disaster Reduction,National Chung Hsing

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）