梁端带粘性阻尼器的弯曲振动梁的复模态与等效阻尼常数的求解方法  

Solutions to the Complex Modes and Equivalent Damping Constants of a Flexural Vibrating Beam with Viscous Damper Ends

作　　者：邓龙龙 邓志坚 邓燕华 

机构地区：[1]江西中恒建设集团有限公司,江西南昌330200

出　　处：《洛阳理工学院学报（自然科学版）》2013年第1期19-22,30,共5页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：运用复模态叠加法对梁端设有2个旋转粘滞阻尼器的伯努利欧拉简支梁进行动态分析,从运动方程入手,建立动力刚度矩阵和分析振动模型,利用边界条件和模态的正交性条件,导出了梁的模态和等效阻尼常数,为方程后续分析提供必要条件。The complex mode superposition method has been adopted in the dynamic analysis of a Bernouili-Euler beam with two rotational viscous dampers attached to its ends. Starting with motion equation, this paper has sct up the dynamic stiffness matrix and analyzed the vibration modes. With the corresponding boundary conditions and the mode orthogonal conditions, it has deduced the beam＇s modes and equivalent damping constants, which is necessary for the following analyses of the equation.

关 键 词：粘滞阻尼器 振动方程 正交条件 振动模态 

分 类 号：TU352.1[建筑科学—结构工程]