• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (8): 7-12.

• 论文 • 上一篇    下一篇

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空心圆柱体中的周向超声导波

何存富;李隆涛;吴斌   

  1. 北京工业大学机电学院
  • 发布日期:2004-08-15

GUIDED CIRCUMFERENTIAL WAVES IN HOLLOW CYLINDERS

He Cunfu;Li Longtao;Wu Bin   

  1. College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology
  • Published:2004-08-15

摘要: 通过理论分析及数值计算研究空心圆柱体中周向导波的传播及频散特性,确定影响空心圆柱体中周向导波传播与频散的几何形状因素;对比不同形状空心圆柱体同相应板的导波频散特性,找出其中的关系;其结果是:在低频段,利用第2个周向导波模态作为薄壁空心圆柱体纵向缺陷无损检测较适合。

关键词: 比例调速阀, 仿真模型, 基础振动, 选型流程, 超声周向导波, 空心圆柱体, 频散, 无损检测

Abstract: The multi-modes and disperse characteristics of guided circumferential waves in hollow cylinders is investigated by theoretical analysis and numerical computation. The geometrical factor that can affect the guided circumferential waves is confirmed. The relationship of guided waves between different hollow cylinders and relevant plate is found. Finally, the results indicate that some given guided circumferential waves are fit for non-destructive testing(NDT) of longitudinal cracks in hollow cylinders.

Key words: fundamental vibration, proportional flow control valve, selection process, simulation model, Disperse, Guided circumferential waves, Hollow cylinders, NDT

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