CAREER: Nonlinear Mechanics and Aeroelastic Stability of High-Speed Rotating Disks and Translating Webs

职业：高速旋转盘和平移腹板的非线性力学和气动弹性稳定性

• 批准号: 0134455
• 负责人: Arvind Raman
• 金额: $ 37.5万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0134455&HistoricalAwards=false
• 关键词: CAREER; Nonlinear; Mechanics; Aeroelastic; Stability

Abstract:The nonlinear vibrations and aeroelastic stability of two-dimensional gyroscopic systems such as high-speed rotating disks and translating webs are investigated using computational, analytical, and experimental techniques together with state-of-the-art models of nonlinear flexible rotating disks and thin translating webs interacting with three-dimensional shear flows. The research aims to identify regions in parameter space where aeroelastic flutter occurs, and investigate the complex post-flutter nonlinear modal interactions of this category of two-dimensional gyroscopic systems. The results will lead directly to a fundamental understanding of the factors (i) limiting rotation or transport speeds and (ii) causing flutter instabilities and will be critical for the future design of information storage and synthetic material processing technologies such as magnetic hard disk drives, optical drives, data storage tapes, printing, and paper, textile, plastics, and metal foil processing systems. The education plan focuses on the PI's current activities in five key areas for integrating research, education, and industrial outreach, including, amongst others (i) leveraging the PI's research in collaboration with Purdue's Minority in Engineering and Women in Engineering Programs for the recruitment and retention of underrepresented groups and women in engineering, and (ii) enhancing the undergraduate curriculum through the creation of a novel, hands-on "Mechanics Laboratory".

摘要：利用计算、分析和实验技术以及非线性柔性旋转盘和平移腹板的最先进模型，研究了二维陀螺系统（例如高速旋转盘和平移腹板）的非线性振动和气动弹性稳定性。薄的平移网与三维剪切流相互作用。该研究旨在识别参数空间中发生气动弹性颤振的区域，并研究此类二维陀螺系统的复杂后颤振非线性模态相互作用。研究结果将直接导致对以下因素的基本理解：（i）限制旋转或传输速度和（ii）导致颤振不稳定性，并且对于信息存储和合成材料处理技术（例如磁性硬盘驱动器）的未来设计至关重要。光驱、数据存储磁带、印刷以及纸张、纺织品、塑料和金属箔加工系统。该教育计划重点关注 PI 目前在五个关键领域的活动，以整合研究、教育和工业外展，其中包括 (i) 利用 PI 的研究成果与普渡大学少数派工程项目和女性工程项目合作进行招聘和培训保留工程领域代表性不足的群体和女性，以及（ii）通过创建新颖的、实践性的“力学实验室”来加强本科课程。