CAREER: Vibration and Stability of Spinning Disk-Spindle Systems and High-Speed Belt Drives

俄亥俄州立大学罗伯特·G·帕克NSF提案9875635旋转磁盘-主轴系统和高速皮带驱动器的振动和稳定性本职业提案的研究方面解决了工业中广泛使用的两种机械系统的振动和稳定性问题：旋转磁盘-主轴系统和高速蛇形皮带驱动器。盘轴系统出现在许多工业应用中，包括盘驱动器、齿轮传动和透平机械。蛇形皮带传动是为车辆附件提供动力的汽车行业标准。类似的设备也用于纸张、磁带驱动器和纺织品加工系统。这两个系统都会受到有害的动态响应的影响，这会导致噪音、降低性能并限制运行寿命。这些系统有两个重要的特性：1)它们是陀螺仪系统，因此它们的动力学行为有许多共同的特征；2)它们将离散单元与连续的弹性体结合在一起。它们的离散-连续混合性质需要一种新的解析公式来揭示它们的经典陀螺结构，并允许应用强大的分析方法进行动态分析。一家工业赞助商正在与一家工业赞助商合作设计一种最先进的实验测试台，以验证和指导皮带研究。虽然研究的直接影响是促进这两个系统的动态建模和理解，但同时工作的目的是确定所获得的知识如何应用于一般陀螺仪的连续性。教育倡议包括：在课堂上使用计算机模拟和多媒体显示，物理系统的课堂演示，对系研究实验室的实地考察，以及创新地使用网络进行实验教学。目标是物理现象的实际演示和传统课堂演示的独特结合。

Robert G. Parker, Ohio State UniversityNSF proposal 9875635Vibration and Stability of Spinning Disk-Spindle Systems and High-SpeedBelt DrivesThe research aspect of this CAREER proposal addresses vibration and stability problems in two mechanical systems in wide industrial use: spinning disk-spindle systems and high-speed serpentine belt drives. Disk-spindle systems occur in many industrial applications including disk drives, geared transmissions, and turbomachinery. Serpentine belt drives are the automotive industry standard for powering vehicle accessories. Similar devices are used in paper, tape drive, and textile processing systems. Both systems are subject to harmful dynamic response that causes noise, degrades performance, and limits operating life. These systems share two important properties: 1) they are gyroscopic systems and so their dynamic behaviors share many common features, and 2) they combine discrete elements with continuous, elastic bodies. Their hybrid discrete-continuous nature requires a novel analytical formulation to expose their classical gyroscopic structure and allow application of powerful analytical methods for dynamic analysis. A state-of-the-art experimental test stand is being designed in cooperation with an industrial sponsor to verify and guide the belt research. While the immediate research impact is to advance the dynamic modeling and understanding of these two systems, the work simultaneously aims to identify how the knowledge gained applies to general gyroscopic continua.The educational initiatives involve: use of computer simulations and multimedia display during lectures, classroom demonstrations of physical systems, field trips' to department research labs, and innovative use of the Web for lab instruction. The goal is a unique combination of practical demonstration of physical phenomena and traditional classroom presentation.