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金虫 (正式写手)

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采用界面弹簧模型对圆管结构的管间界面特性进行描述, 推导出含弱界面的圆管结构中的位移场及应力场的数学表达式. 在此基础上采用导波的模式展开分析方法, 给出了与管间界面特性及激励源密切相关的周向超声导波模式展开系数的解析表达式. 数值分析了管间界面特性的变化对周向超声导波的频散和声场所产生的影响. 理论与数值分析结果表明, 通过选择适当的驱动频率及周向导波模式, 可使周向导波的相速度及圆管外表面的位移场对管间界面特性的变化非常敏感. 这一结果有助于采用周向超声导波方法准确定征圆管结构的管间界面特性.
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灿灿妹

至尊木虫 (著名写手)

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从小问起: 金币+20, ★★★很有帮助 2015-06-25 14:38:00
采用界面弹簧模型对圆管结构的管间界面特性进行描述, 推导出含弱界面的圆管结构中的位移场及应力场的数学表达式.
The interfacial characteristics of circular tube structure were described by the the interfacial spring model to infer the mathematical expressions of displacement field and stress field in circular tube structure with  imperfect interface.
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2楼2015-06-25 12:36:55
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灿灿妹

至尊木虫 (著名写手)

【答案】应助回帖

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从小问起: 金币+60, 翻译EPI+1, ★★★很有帮助 2015-06-25 14:44:21
在此基础上采用导波的模式展开分析方法, 给出了与管间界面特性及激励源密切相关的周向超声导波模式展开系数的解析表达式. 数值分析了管间界面特性的变化对周向超声导波的频散和声场所产生的影响.
And based on which, the guided waves mode was used as analytical method to conclude the analytical expression of  expansion coefficient of circumferential ultrasonic guided wave mode, which was closely related to interfacial characteristics between tube and excitation source.
Besides, the effects of  changes of  interfacial characteristics to dispersion and the acoustic field of ultrasonic guided wave were analyzed based on numerical analysis.
执此一生,只为一人,天涯海角,惟愿君安
3楼2015-06-25 12:50:28
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灿灿妹

至尊木虫 (著名写手)

【答案】应助回帖

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从小问起: 金币+20, ★★★很有帮助 2015-06-25 14:39:08
理论与数值分析结果表明, 通过选择适当的驱动频率及周向导波模式, 可使周向导波的相速度及圆管外表面的位移场对管间界面特性的变化非常敏感. 这一结果有助于采用周向超声导波方法准确定征圆管结构的管间界面特性.
The results of theoretical and numerical analysis showed that the phase velocity of circumferential guided wave and displacement field of pipe outside surface could be very sensitive to the varieties of  interfacial characteristics between tube, which contributes to nearly estimating the  interfacial characteristics of circular tube structure by circumferential guided wave method.
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4楼2015-06-25 13:00:40
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