| 复合管内径壁厚比对导波速度的影响 |
| |
| 引用本文： | 他得安.复合管内径壁厚比对导波速度的影响[J].声学技术,2004,23(3):133-137. |
| |
| 作者姓名： | 他得安 |
| |
| 作者单位： | 复旦大学,电子工程系,上海,200433 |
| |
| 基金项目： | 上海市博士后科学基金资助项目(2002年) |
| |
| 摘 要： | 文章分析了复合管材中超声纵向较低阶导波模式的频散特性，在一般的弹性动力学运动方程的基础上，讨论了内径-壁厚比对导波传播速度的影响。结果表明：当材料和频厚积一定时，复合管材中导波的速度只与内径-壁厚比有关；当内径-壁厚比和频厚积较小时，内径-壁厚比的变化对低阶导波模式的传播速度有较大的影响，但随内径-壁厚比和频厚积的增加，这种影响将减小。
|
| 关 键 词： | 影响 比对 超声 内径 纵向 增加 变化 波传播 运动方程 弹性动力学 |
| 文章编号： | 1000-3630(2004)03-0133-05 |
| 收稿时间： | 2003/12/1 0:00:00 |
| 修稿时间： | 2004/3/26 0:00:00 |
Effects of inner-radius-to-thickness ratio of composite pipes on velocity of guided waves |
| |
| TA De-an.Effects of inner-radius-to-thickness ratio of composite pipes on velocity of guided waves[J].Technical Acoustics,2004,23(3):133-137. |
| |
| Authors: | TA De-an |
| |
| Affiliation: | Department of Electronic Engineering, Fudan University, Shanghai 200433, China |
| |
| Abstract: | The paper analyzed the dispersive characteristics of ultrasonic longitudinal guided waves in composite pipes. Based on the general equations of elastodynamics, the effects of inner-radius-to-thickness ratio (IRTR) on propagation velocity of guided waves are analyzed. The results show that, for a certain material and a certain frequency-thickness product, the propagation velocity of guided waves in composite pipes are only related to IRTR of the pipe. When both IRTR and frequency-thickness product are smaller, the change of IRTR has a significant influence on the velocity of lower-order guided waves, while with the increase of IRTR and frequency-thickness product, the influence of IRTR will be reduced. |
| |
| Keywords: | composite pipes inner-radius-to-thickness ratio guided waves velocity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《声学技术》浏览原始摘要信息 |
|
点击此处可从《声学技术》下载全文 |
