| 基于频散特性的杆中超声波传播仿真 |
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| 引用本文： | 陈友兴,郭娟,吕娟,王召巴,金永.基于频散特性的杆中超声波传播仿真[J].系统仿真学报,2010,22(2). |
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| 作者姓名： | 陈友兴 郭娟 吕娟 王召巴 金永 |
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| 作者单位： | 1. 中北大学电子测试技术国家重点实验室,太原,030051;中北大学仪器科学与动态测试教育部重点实验室,太原,030051
2. 中北大学仪器科学与动态测试教育部重点实验室,太原,030051 |
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| 基金项目： | 国家自然科学基金(60672005); 山西省留学人员科研资助项目(69); 山西省自然科学基金(2007011053) |
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| 摘 要： | 针对超声实时在线检测中缓冲杆应用的局限性,以无限长杆的频散特性为理论基础,利用有限长杆的端面边界条件,分别以应力关系和应变关系为系统函数,建立了超声波在有限长杆中传播的系统模型。通过在杆端面施加激励,借助系统传输模型,获取回波信号,并与实验进行对比,验证该方法的正确性。同时得出了超声波在有限长杆中传播产生的多次回波的重复周期与杆半径之间成正比的关系。
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| 关 键 词： | 频散特性 有限长杆 应力分析 应变分析 超声波仿真 |
Simulation on Ultrasonic Propagation in Finite Rods Based on Frequency Dispersion Characteristic |
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| CHEN You-xing,GUO Juan ,LV Juan ,WANG Zhao-ba,JIN Yong,Ministry of Education,China.Simulation on Ultrasonic Propagation in Finite Rods Based on Frequency Dispersion Characteristic[J].Journal of System Simulation,2010,22(2). |
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| Authors: | CHEN You-xing GUO Juan LV Juan WANG Zhao-ba JIN Yong Ministry of Education China |
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| Institution: | CHEN You-xing1,2,GUO Juan 2,LV Juan 2,WANG Zhao-ba1,JIN Yong1,2 (1.National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan 030051,China,2.Key Laboratory of Instrumentation Science & Dynamic Measurement(North University of China),Ministry of Education,China) |
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| Abstract: | In order to study buffer rods applying in real-time and on-line ultrasonic testing,the system model of the ultrasonic propagating in finite rods was built using the methods of stress-analysis and strain-analysis,which are both based on the frequency dispersion characteristic of stress wave in infinite rods and the end's boundary condition of finite rods.The models based on the stress-analysis and strain-analysis methods were analyzed,and the impulse signals were obtained respectively.The results of the simu... |
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| Keywords: | frequency dispersion characteristic finite rods stress-analysis strain-analysis ultrasonic simulation |
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