首页> 外文学位 >Tensioning and aeroelastic flutter of circular rotating disks.
【24h】

Tensioning and aeroelastic flutter of circular rotating disks.

机译:圆形转盘的张紧和气动弹性颤振。

获取原文
获取原文并翻译 | 示例

摘要

This dissertation examines the modeling of and techniques for reducing the transverse vibration of rotating circular disks.; We examine two phenomena that limit rotating circular disk design practices. The first concerns alternative tensioning techniques for increasing the critical speed of circular rotating disks. For the practical realization of this new tensioning technique called centripetal tensioning, some design considerations are investigated: the effect of asymmetry; and the relationship between the transverse stiffness of the saw and the transverse stiffness of the clamp. Calculations and experiments show the feasibility and practicality of centripetal tensioning.; The second concerns aeroelastic flutter, unstable coupling between the disk and the surrounding air. The presence of previously unrecognized boundary layers near the rim of the disk was suggested and a simple model for predicting flutter was developed. Although the model is simple, its predictions are similar to the experimental evidence in a number of ways and gives analytic predictions of aeroelastic flutter that are within an order of magnitude of the experimental values. The model also sets the stage for more refined modeling efforts.
机译:本文研究了减小旋转圆盘横向振动的模型和技术。我们研究了两种限制旋转圆盘设计实践的现象。第一个涉及替代的张紧技术,用于提高圆形转盘的临界速度。为了实际实现这种称为向心张紧的新张紧技术,研究了一些设计注意事项:不对称的影响;锯的横向刚度和夹具的横向刚度之间的关系。计算和实验表明向心张紧的可行性和实用性。第二个问题是气动弹性颤振,磁盘和周围空气之间的不稳定耦合。建议在磁盘边缘附近存在以前无法识别的边界层,并开发了一种用于预测颤动的简单模型。尽管该模型很简单,但其预测在许多方面都与实验证据相似,并给出了空气弹性颤振的解析预测,其在实验值的数量级内。该模型还为更精细的建模工作奠定了基础。

著录项

  • 作者

    Kim, Hong-Ryul.;

  • 作者单位

    Columbia University.;

  • 授予单位 Columbia University.;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 90 p.
  • 总页数 90
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号