EQUATION OF MOTION FOR NOVEL FRICTION PENDULUM SYSTEM WITH DUAL ROLLERS  

一种新的辊轴型摩擦摆隔振系统运动微分方程的推导(英文)

作　　者：袁健[1] ROSCHKE Paul 

机构地区：[1]南京航空航天大学航空宇航学院 [2]得克萨斯农工大学土木系

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2005年第4期276-280,共5页南京航空航天大学学报（英文版）

摘　　要：A novel friction pendulum system （FPS） with dual rollers is studied based on the multibody dynamics theory. By analyzing kinematic characteristics of the system, it is reduced to a one degree-of-freedom system. Then the equation of motion for the system is analytically derived by applying the theorem of the relative kinetic energy for a system of particles in differential form in the non-inertial reference system described as a nonlinear differential equation. In the case of the small angular displacement, the natural frequency of the corresponding undamped linear system is obtained, which is consistent with the experimental observation. The derived equation is useful for the study of dynamic characteristics of novel FPS, and its solution directly expedites the simulation of the system in a control loop, and further facilitates the semi-active control process including novel FPS.应用多体动力学理论研究了一种新的辊轴型摩擦摆隔振系统。基于该系统的运动学规律,将其简化为一个单自由度多体系统。应用非惯性系中微分形式的质点系相对动能定理,推导出该系统的非线性运动微分方程。通过讨论与小角位移无阻尼情形对应的线性无阻尼自由振动微分方程,得到了相应的固有频率,与实验结果一致。直接求解该运动方程可有效准确地研究摩擦摆隔振系统的动力学行为。

关 键 词：friction pendulum system with dual rollers seismic isolation analytical study multibody system 

分 类 号：TU311[建筑科学—结构工程]