| 应力波在测量管状结构中初应力的应用 |
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| 引用本文： | 蔡正敏,黄上恒,胡时岳,周芳德. 应力波在测量管状结构中初应力的应用[J]. 强度与环境, 2000, 0(3): 7-12 |
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| 作者姓名： | 蔡正敏 黄上恒 胡时岳 周芳德 |
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| 作者单位： | 西安交通大学工程力学系,西安,710049 |
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| 基金项目： | 西安交通大学多相流国家重点实验室的资助 |
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| 摘 要： | 通过求解考虑初应力时的耦合波动方程,得到了管道壁中应力波传播时相速度和初应力的关系,并进行了实例计算。结果表明,预应力对于管道中传播的压力波的相速度有明显的影响。同时,由结果可得对于给定的材料参数和管道尺寸,通过测量管道中应力波的传播速度即可确定管道中的初应力,这对管道设计、力学性能以及安全性能分析具有理论意义和应用价值,并为应力波在无损检测中的应用开辟了一个新的途径。
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| 关 键 词： | 初应力 应力波 相速度 无损检验 管状结构 应用 |
Waves Propagation in Application of Measuring Initial Stress in Hollow Cylinder Structure |
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| Cai Zhengmin,Huang Shangheng,Hu Shiyue,Zhou Fangde. Waves Propagation in Application of Measuring Initial Stress in Hollow Cylinder Structure[J]. Structure & Environment Engineering, 2000, 0(3): 7-12 |
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| Authors: | Cai Zhengmin Huang Shangheng Hu Shiyue Zhou Fangde |
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| Abstract: | The propagation behavior of wave in a hollow cylinder structure with initial stress is investigated in this paper.By solving the frequency equation,the relationship between initial stress and phase velocity is obtained.It is shown that the initial stress in the hollow cylinder can be determined by means of the measurement of phase velocity.This is significant for the detecting the initial stress of engineering structure,so it can ensure the safety of engineering structure. |
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| Keywords: | initial stress Stress wave phase velocity nondestructive testing. |
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