摘要
以附加惯性飞轮与滚珠丝杠机构的弹簧-质量块单自由度(SDOF)模型为例,综合理论分析与模型试验建立了表观质量引起的负刚度效应模型。分析了将表观质量负刚度效应应用于调谐质量阻尼器(TMD)频率调整的可行性。研究表明:基于表观质量负刚度效应的TMD频率调节方法,采用质量比很小的惯性飞轮封装,即可实现TMD频率较大范围内的高效调节;基于表观质量负刚度效应的竖向超低频TMD设计方法,有效解决了TMD静压缩量偏大的问题。
Theoretical formula of negative stiffness generated by apparent mass is established by both theoretical analysis and model test,where the model is a combination of a single degree of freedom（SDOF） system and a inertia flywheel with a ball screw.On this basis,feasibility study on application of apparent mass effect to frequency tuning of tuned mass dampers（TMDs） is conducted.The results show that a wider range of frequency tuning of TMDs can be realized by a lighter flywheel based on negative stiffness generated by apparent mass.The apparent mass effect can also be used to design vertical TMDs with ultra-low frequency,in which the static compression of the springs in a TMD can be greatly decreased.
出处
《科学技术与工程》
北大核心
2016年第27期246-250,共5页
Science Technology and Engineering
基金
国家自然科学基金资助项目(51308214)
河南省高等学校青年骨干教师计划(2015GGJS-104)资助
关键词
结构振动控制
表观质量
负刚度
调谐质量阻尼器
频率调节
structural vibration control
apparent mass
negative stiffness
tuned mass damper（TMD）
frequency tuning
