Study And Analysis On Performance Of Laminated Viscoelastic Body Steel Tube Damper

In this paper,the existing problems of metal damper are described,and a new type of damper,and the feasibility of the proposed laminated viscoelastic damper of steel tube is verified by finite element software,in this paper,the optimal design of different structures of laminated viscoelastic steel tube dampers is carried out,and the optimal structures of laminated viscoelastic steel tube dampers are selected by comparison,and the parameters optimization,complex force analysis and design methods are studied:(1)Based on the analysis of energy dissipation mechanism and working performance of laminated viscoelastic damper of steel tube,the hyperbolic steel tube can effectively improve the failure mode of common steel tube,and the end strengthening the middle weakening structure can reasonably control the stress distribution of the damper The laminated viscoelastic body installed in the steel tube can effectively avoid the buckling phenomenon of the Steel Tube,give full play to the energy dissipation capacity of the steel tube,and further improve the working performance of the damper.(2)The energy dissipation mechanism and working performance of different types of laminated viscoelastic dampers for steel tubes are analyzed.The Hollow Tube Laminated viscoelastic dampers have few materials,light weight,large cumulative specific energy absorption,and the best comprehensive performance.(3)A laminated viscoelastic damper with 48 different parameters was designed to study the height-to-diameter ratio,thickness-to-diameter ratio,weakening ratio,hollow ratio of the laminated viscoelastic body and the design parameters related to the laminated viscoelastic body,height-to-diameter ratio,thickness-to-diameter ratio and weakening ratio are the key parameters that affect the performance of dampers.(4)According to the range of the key parameters obtained from the parameter analysis,the damper in this range is selected to analyze the actual force of the damper,the results show that the performance of the laminated viscoelastic damper is basically unchanged under the complex force.(5)The design method of the laminated viscoelastic damper for steel tubes is studied,and the theoretical method of the laminated viscoelastic damper for steel tubes is deduced by the method of the independent calculation of the steel tubes and the laminated viscoelastic body first and then the combination,the design procedure of laminated viscoelastic damper for steel tube is given,and an example is designed to verify it.