摩擦阻尼器抑制结构振动的研究

:研究了一种可用于桥梁和桁架桅结构减振的螺栓连接的H形摩擦阻尼器装置,对摩擦阻尼器结构减振系统,给出了易于分析的方法,该方法可用在相应的线性和非线性系统分析中.同时对一个单自由度结构系统进行了实测计算,计算结果与有关的实验结果较为一致,验证了该方法的有效性.

Study of Friction Damper for Vibration Mitigation of Structures

Friction dampers as energy dissipators have been used in aseismic design of buildings, however a proper understanding and analysis of the friction process involved should be extend to their application to 'non building' structures like bridge and truss mast. In this paper, a simple H shaped friction damper with several bolts in every slot of a diagonal is suggested and an easy method to analyze structures with slotted bolted connections and velocity dependent friction characteristics; the method is simple and can be used in linear and non linear analysis. A numerical example is carried out using a single degree of freedom (SDOF) structure to verify efficiency of the proposed method. Analytical results are in better agreements with related experimental results.