旋转剪切式磁流变液阻尼器设计及力学模型  

Design and mechanical model of a rotary-mode shear MR damper

作　　者：王修勇[1] 孙洪鑫[1] 陈政清[2] 

机构地区：[1]湖南科技大学湖南省普通高等学校土木工程施工过程与质量安全控制重点实验室,湘潭411201 [2]湖南大学土木工程学院,长沙410082

出　　处：《振动与冲击》2010年第10期77-81,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(50578063)

摘　　要：设计、制作了阻尼力可调范围大、位移不受限制的旋转剪切式MR阻尼器,进行了MR阻尼器力学性能试验,提出了MR阻尼力库仑摩擦阻尼力峰值与输入电流的玻尔兹曼函数关系。分析了MR阻尼力时程,MR阻尼力与位移、速度关系,以及振动频率、幅值和电流对MR阻尼力的影响。对比MR试验值与基于玻尔兹曼函数Bingham模型值的关系,证明了基于玻尔兹曼函数的Bingham模型是合理的。A rotary-mode shear MR damper was designed and manufactured to gain larger continuously adjustable damping force and unrestricted displacement.The Boltzmann function formulation for the relationship between the peak of coulomb friction damping force of the MR damper and its input current was investigated based on mechanical properties test results of the MR damper.The time history of the MR damping force,the relationship between the MR damping force and the displacement,the relationship between the MR damping force and the velocity,the impact of vibration frequencies and amplitudes,and the impact of input current were analyzed.By comparing experimental results of the damping force time history,the relation of the damping force and the displacement,and the relation of the damping force and the velocity,with Boltzmann function results of those,it was further proved that the Bingham model based on Boltzmann function is reasonable.

关 键 词：旋转剪切式MR阻尼器 Bingham模型 玻尔兹曼函数 

分 类 号：TM271[一般工业技术—材料科学与工程]