基于有限元方法的双层材料激光超声数值模拟
Numerical Simulation of Laser Induced Ultrasound in Double Layer Materials Based on Finite Element Method
摘 要
采用有限元方法数值模拟了单脉冲激光热弹激发双层材料中的超声波, 得到了材料的上下表面的应力场分布。通过对铝板中的波形进行快速傅里叶变换得到频率信号, 计算出波包群速度, 判断出材料中兰姆波的模态。结果表明: 受基底影响, 在双层材料的上层铝板中得到了三种模态的兰姆波。该研究为复合材料激光超声的应用研究提供了新的途径。
双层材料
兰姆波模态
激光超声
finite element method
double layer materials
mode of Lamb wave
laser ultrasound
Abstract
The thermoelastically generated ultrasound in double layer materials was numerically simulated by finite element method(FEM), and the stress field on top and bottom surface was obtained. Then, the frequency signal from the waveform of stress was obtained by using FFT, according to the group velocity of the ultrasonic packet so that the modes of Lamb wave in the materials could be found out. The results showed that three kinds of modes of Lamb wave influenced by the substrate were fount in aluminum plate of the double layer materials. The results could provide a new approach for the research of the laser induced ultrasound in composite material.
中图分类号 TN294
所属栏目
基金项目 教育部博士点基金(20093218110024); 国际合作项目(BZ2010060); 留学人员科技活动项目择优资助经费项目(1008-YAK10001)
收稿日期 2011/1/4
修改稿日期
网络出版日期
作者单位点击查看
备注陈刚(1985-), 男, 硕士研究生。
引用该论文: CHEN Gang,WANG Kai-sheng,ZHAO Zhi-min. Numerical Simulation of Laser Induced Ultrasound in Double Layer Materials Based on Finite Element Method[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2011, 47(7): 403～406
陈刚,王开圣,赵志敏. 基于有限元方法的双层材料激光超声数值模拟[J]. 理化检验－物理分册, 2011, 47(7): 403～406
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】施德恒, 陈玉科, 孙金锋, 等.激光超声技术及其在无损检测中的应用概况[J].激光杂志, 2004, 25(5):1-4.
【2】许伯强.层状材料的激光超声有限元模拟和神经网络方法反演材料参数的研究[D].南京: 南京理工大学, 2003.
【3】章肖融.用激光超声评估复合材料[J].应用声学, 2000, 19(5):1-9.
【4】JEN C K, CIELO P, BUSSIERE J, et al.Phase variation of focused surface acoustic wave[J].Apply Phys Lett, 1985, 46(3):241-243.
【5】JHANG Kyung-young, SHIN Min Jae, LIM Byoung Ok .Application of the laser generated focused-Lamb wave for non-contact imaging of defects in plate[J].Ultrasonics, 2006, 44:e985-e989.
【6】何跃娟, 朱日宏, 沈中华, 等.有限元方法在激光超声研究中的应用[J].应用激光, 2004, 24(5):269-273.
【7】倪晓武, 陈 笑, 许伯强, 等. 激光激发瞬态Lamb 波的实验检测与数值模拟研究[J].南京理工大学学报, 2003, 27(5):70-78.
【8】CHENG A, MURRAY T W, ACHENBACH J D. Simulation of laser-generated ultrasonics in layered plates[J].J Acoust Soc Am, 2001, 110(2):845-855.
【9】罗斯J L.固体中的超声波[M].何存富, 吴斌, 王秀彦, 译.北京:科学出版社, 2004.
【10】SHI Yijun, WOOH Shi-chang, ORWAT Mark. Laser-ultrasonic generation of Lamb waves in the reaction force range[J]. Ultrasonics, 2003, 41:623-633.
【2】许伯强.层状材料的激光超声有限元模拟和神经网络方法反演材料参数的研究[D].南京: 南京理工大学, 2003.
【3】章肖融.用激光超声评估复合材料[J].应用声学, 2000, 19(5):1-9.
【4】JEN C K, CIELO P, BUSSIERE J, et al.Phase variation of focused surface acoustic wave[J].Apply Phys Lett, 1985, 46(3):241-243.
【5】JHANG Kyung-young, SHIN Min Jae, LIM Byoung Ok .Application of the laser generated focused-Lamb wave for non-contact imaging of defects in plate[J].Ultrasonics, 2006, 44:e985-e989.
【6】何跃娟, 朱日宏, 沈中华, 等.有限元方法在激光超声研究中的应用[J].应用激光, 2004, 24(5):269-273.
【7】倪晓武, 陈 笑, 许伯强, 等. 激光激发瞬态Lamb 波的实验检测与数值模拟研究[J].南京理工大学学报, 2003, 27(5):70-78.
【8】CHENG A, MURRAY T W, ACHENBACH J D. Simulation of laser-generated ultrasonics in layered plates[J].J Acoust Soc Am, 2001, 110(2):845-855.
【9】罗斯J L.固体中的超声波[M].何存富, 吴斌, 王秀彦, 译.北京:科学出版社, 2004.
【10】SHI Yijun, WOOH Shi-chang, ORWAT Mark. Laser-ultrasonic generation of Lamb waves in the reaction force range[J]. Ultrasonics, 2003, 41:623-633.
相关信息
