Improving Web Transport Dynamics in Application and Manufacturing Environments

改善应用和制造环境中的网络传输动态

• 批准号: 9622258
• 负责人: Jonathan Wickert
• 金额: $ 23.72万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9622258&HistoricalAwards=false
• 关键词: Improving; Web; Transport; Dynamics; Application

9622258 Wickert Webs are flat continuous strips of thin materials like paper, cloth, plastic, sheet metal, or magnetic tape, that are transported during manufacture or use at high speed and under tension. While the material that comprises the web may vary, high speeds and precise control are common goals for web handling systems. This project will investigate two technical problems that limit the performance of web transport systems. First is air entrapment that occurs when winding a web onto a spool. The second performance limiting problem is mechanical wrinkling caused by misalignment of the guides in a web transport system. The experimental part of the research uses a non-contact laser interferometer system to measure web vibration at high speeds, transient vibrations during spooling, and the unstable response of the web at the onset of wrinkling. Complementing this experimental work will be development of a dynamic model of the web that will include coupling between the elastic deformation and pressure cause by entrapped air, and the non-uniform in plane stresses caused by guide misalignment. Increased fundamental understanding of web transport dynamics is one of the contributions of this research. In addition, these results will lead to solutions to the air entrapment and wrinkling problem, increasing the stability and performance of web handling systems.

9622258维克特网是纸、布、塑料、金属片或磁带等薄材料的扁平连续条带，在制造或使用过程中以高速和张力传输。虽然构成卷筒纸的材料可能不同，但高速和精确控制是卷筒纸处理系统的共同目标。本项目将研究限制网络传输系统性能的两个技术问题。首先是缠绕在卷轴上的纸幅时发生的空气缠绕现象。第二个性能限制问题是由卷筒纸传送系统中的导轨不对准引起的机械起皱。研究的实验部分使用非接触式激光干涉仪系统来测量纸幅在高速下的振动、卷绕过程中的瞬时振动以及纸幅在起皱开始时的不稳定响应。作为这项实验工作的补充，将开发一个腹板的动态模型，该模型将包括由被困住的空气引起的弹性变形和压力之间的耦合，以及由于导轨不对中引起的平面应力的不均匀。增加对网络传输动力学的基本理解是这项研究的贡献之一。此外，这些结果将导致解决空气缠绕和起皱问题，提高纸幅处理系统的稳定性和性能。