Study on Parameters of Spring-slope Variable Friction Damper
There is no systematic research method and specific specification support for variable friction dampers.Through theoretical derivation,the calculation formulas of structural displacement and energy dissipation ratio of sin-gle-degree-of-freedom system under resonance excitation are obtained,and the friction coefficient,slope length,slope and disc spring stiffness are determined as important parameters affecting the mechanical properties of spring-slope variable friction damper.The parameters of spring-slope variable friction damper are analyzed by self-compiled program.The results show that:(1)The friction coefficient of spring-slope variable friction damper should be more than 0.5;(2)The length of the slope should be appropriately increased and the length of the plane section should be less than the yield displacement of the structure;(3)When the energy consumption of spring-slope friction damper is insufficient,it should be given priority to increase the slope.(4)When increasing the slope is still unable to meet the energy demand of the spring-slope friction damper,increasing the stiffness of the disc spring can be considered.The research results provide a reference for the parameter determination of spring-slope variable friction damper in practical engineering applications.
spring-slope variable friction damperparameter analysisenergy consumption ratiofinite element analysissingle-degree of freedom system
万方数据
维普
