关键词: 振动与波, 调谐质量阻尼器, 振动控制, 环向布置弹簧刚度, 颗粒碰撞阻尼, 低元化模型

Abstract:

Buffer tank, pipeline, pressure vessels, heat exchangers and other cylindrical chemical equipment usually vibrate severely in petrochemical enterprises. The vibration control mechanism of such continuous structure with tuned mass damper was studied by adopting the idea of low element model and equivalent mass identification. A new type particle collision ring tuned mass damper was proposed which is mounted easily. Radial composite stiffness of symmetrical arrangement spring was calculated based on the numerical analysis and damping coefficient of particles collision was measured for achieving the optimal tuning parameters of damper. The vibration control features was simulated by MATLAB. The vibration test bench of cantilever steel structure cylinder was established for verifies the performance of damper at the first modal natural frequency. The results show that particle collision ring tuned mass damper can suppress structural vibration effectively in all directions and has a wide range of frequency band. The particle collision damping and ring design can provide greater application space for tuned mass damper.