Modeling elastic wave propagation in waveguides with the finite element method
Modeling elastic wave propagation in waveguides with the finite element method
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DOI：
10.1016/s0963-8695(98)00045-0
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发表时间：
1999-06-01
影响因子：
4.2
通讯作者：
Qu, JM
中科院分区：
文献类型：
--
作者：
Moser, F;Jacobs, LJ;Qu, JM
本文报道了导波技术在无损检测工程构件结构完整性中的应用。具体而言，本研究使用商业有限元（FE）代码来研究超声波在环形结构中的传播特性。为了证明所提出的FE技术的准确性，导波在平板中的传播首先检查。其次，导波在厚环结构中的传播进行了研究。最后，这些FE结果进行了比较分析和实验结果。这项研究的结果清楚地说明了使用有限元方法来模拟导波传播问题的有效性，并证明了有限元方法的问题时，分析解决方案是不可能的，因为“复杂”的组件几何形状的潜力。(C)1999 Elsevier Science Ltd.保留所有权利。
This paper reports on the application of guided waves techniques to nondestructively determine the structural integrity of engineering components. Specifically, this research uses a commercial finite element (FE) code to study the propagation characteristics of ultrasonic waves in annular structures. In order to demonstrate the accuracy of the proposed FE technique, the propagation of guided waves in a flat plate is examined first. Next, the propagation of guided waves in thick ring structures is investigated. Finally, these FE results are compared to analytical and experimental results. The results of this study clearly illustrate the effectiveness of using the FE method to model guided wave propagation problems and demonstrate the potential of the FE method for problems when an analytical solution is not possible because of ''complicated'' component geometry. (C) 1999 Elsevier Science Ltd. All rights reserved.