CAREER: Nonlinear, Aeroelastic Rotating Disk Modeling and Mechanics for High Capacity, Removable Data Storage

职业：用于高容量、可移动数据存储的非线性、气动弹性旋转盘建模和力学

• 批准号: 9874965
• 负责人: Anthony Renshaw
• 金额: $ 20万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9874965&HistoricalAwards=false
• 关键词: CAREER; Nonlinear; Aeroelastic; Rotating; Disk

PI: Anthony Renshaw, Columbia UniversityProposal Number: CMS-9874965Proposal Title: CAREER: Nonlinear, Aeroelastic Rotating Disk Modeling and Mechanics For High Capacity, Removable Data Storage Project Abstract:This Career Proposal combines a research program on the fundamental mechanics and aerodynamic coupling of flexible, high-speed rotating disks and a series of curriculum development activities in design and multimedia education. The proposed research focuses on three fundamental, unsolved problems that are crucial to removable data storage design: nonlinear rotating disk dynamics, aerodynamically induced instability, and floppy disk mechanics. Each problem will be attacked theoretically and experimentally in order to fully characterize of the nonlinear mechanisms and aerodynamic excitation forces controlling these systems. Singular perturbation theory will be exploited to simplify the underlying equations while capturing the essential physics with minimal complexity. The results of this research will provide analytical and numerical guidance for the design of the next generation of 100+ MB removable data storage, a hotly contested market that was sharply brought into focus with the introduction of the Zip drive. Because most existing research on nonlinear, aeroelastic, rotating disk mechanics present only negative results (e.g., results where analytical predictions contradict experimental findings), current designs are conservative and are based primarily on cut-and-try results. The proposed research will help eliminate ad-hoc design practices and produce more reliable, higher capacity designs.The educational activities extend three existing projects: a CAD/rapid prototyping course to enable undergraduates to develop potential solutions to on-going faculty research; further development of an on-line module in design for injection molding; and a seminar course in toy design. In addition, a project in on-line toy design for first year students that focuses on Tomagotchi/"virtual" toys and an upper-class elective in technology driven toy design are proposed. These efforts will help acquaint students with the process of design and the role engineering insight and analysis plays in real world design.

项目编号：cms -9874965项目名称：职业规划：大容量可移动数据存储的非线性气动弹性旋转盘建模与力学摘要：本职业规划将柔性高速旋转盘的基础力学与气动耦合研究项目与设计和多媒体教育中的一系列课程开发活动相结合。提出的研究重点是三个基本的、未解决的问题，这些问题对可移动数据存储设计至关重要：非线性旋转磁盘动力学、空气动力学诱导不稳定性和软盘力学。每个问题都将从理论上和实验上进行探讨，以便充分表征控制这些系统的非线性机制和气动激励力。奇异摄动理论将被用来简化基本方程，同时以最小的复杂性捕获基本物理。这项研究的结果将为下一代100+ MB可移动数据存储的设计提供分析和数值指导，这是一个激烈竞争的市场，随着Zip驱动器的引入而急剧成为焦点。由于大多数关于非线性、气动弹性、旋转盘力学的现有研究只给出了否定的结果（例如，分析预测的结果与实验结果相矛盾），目前的设计是保守的，主要基于反复试验的结果。拟议的研究将有助于消除临时设计实践，并产生更可靠、更高容量的设计。这些教育活动扩展了三个现有的项目：一个CAD/快速原型设计课程，使本科生能够为正在进行的教师研究开发潜在的解决方案；注射成型在线设计模块的进一步开发还有玩具设计的研讨会课程。此外，本研究亦建议一年级学生开设线上玩具设计专题，以“虚拟”玩具为主，并开设技术驱动型玩具设计的高年级选修课程。这些努力将帮助学生熟悉设计的过程，以及工程洞察力和分析在现实世界设计中的作用。