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.
关键词
弹簧-坡面变摩擦阻尼器/参数分析/耗能比/有限元分析/单自由度体系
Key words
spring-slope variable friction damper/parameter analysis/energy consumption ratio/finite element analysis/single-degree of freedom system
维普
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