A FRICTION DAMPER WITH CONTINUOUSLY VARIABLE POST-SLIDING STIFFNESS

摘要：

Proposed in this study is a type of friction damper characterized a continuously variable post-sliding stiffness,which provides an increasing post-sliding force with the accretion of the deformation. It is possible to adjust the output force according to the performance targets at different earthquake levels,thus enlightening a practical approach to the explicit structure control to satisfy all of the required performance objectives. Theoretical analyses reveal that the parabola shape of the sliding surface would introduce a cubic force-displacement relationship,which was also demonstrated by sophisticated finite element models. The typical mechanic model was then incorporated into the source code of OpenSEES. The incremental dynamic analysis of single-story steel moment frames equipped with different type of dampers gave reasonable results and demonstrated that the proposed friction damper is able to reduce the displacement response and more important,is helpful to prevent a structure from collapse.

关键词： Friction damper Passive control Energy-dissipation device Incremental dynamic analysis

作者: Xi Chen Tao Wang Rui Teng

作者单位: Institute of Engineering Mechanics, China Earthquake Administration,Yanjiao,Sanhe 065201,P.R.China Institute of Engineering Mechanics,China Earthquake Administration, Yanjiao,Sanhe 065201,P.R. China Institute of Engineering Mechanics, China Earthquake Administration, Yanjiao,Sanhe 065201,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1309-1315

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）