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".

翻译后摘要：二维陀螺系统，如高速旋转的磁盘和翻译的网站的非线性振动和气动弹性稳定性进行了研究，使用计算，分析和实验技术，连同国家的最先进的模型的非线性柔性旋转磁盘和薄的翻译网站与三维剪切流相互作用。研究的目的是确定区域的参数空间中的气动弹性颤振发生，并调查复杂的颤振后的非线性模态相互作用的这一类二维陀螺系统。结果将直接导致对以下因素的基本理解：（i）限制旋转或运输速度;（ii）引起颤振不稳定性，并且对于信息存储和合成材料处理技术的未来设计至关重要，例如磁性硬盘驱动器，光盘驱动器，数据存储磁带，印刷，纸张，纺织品，塑料和金属箔处理系统。教育计划侧重于PI目前在五个关键领域的活动，以整合研究，教育和工业推广，其中包括（i）利用PI的研究与普渡大学的少数民族工程和妇女工程项目合作，招聘和保留代表性不足的群体和妇女工程，及（ii）透过设立一个崭新的、可亲身实践的“力学实验室”，加强本科生课程。