Open AccessCOMPARE THE EFFICIENCY OF CONTROLLED STIFFNESS DAMPER WITH VARIABLE FRICTION DAMPER FOR SEISMIC PROTECTION OF BUILDING
Author(s) -
Phuc Quang Bao Nguyen,
Hoa Nhan Pham,
Thang Q. Chu
Publication year - 2009
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v12i8.2277
Subject(s) - damper , clamping , modal , stiffness , variable (mathematics) , structural engineering , vibration control , engineering , tuned mass damper , vibration , control theory (sociology) , computer science , control (management) , mechanical engineering , materials science , physics , mathematics , acoustics , mathematical analysis , artificial intelligence , polymer chemistry
The implementation of variable friction dampers (VFD) for vibration mitigation of seismic structures generally requires an efficient semi-active control law. In this paper, a semi-active modal control method is proposed to determine the controllable clamping force of a variable friction damper. A comparative study was performed on a multiple DOF structure controlled by passive friction dampers, variable friction dampers in subsection numerical examples. Finally, this paper also provides preliminary conclusions about the advantages and disadvantages for friction dissipators.