南京大学学报(自然科学版) ›› 2011, Vol. 47 ›› Issue (5): 605–613.
潘波**，郭湘怡，高倩，张华
Pun Bo，Guo Xiang一Yi,Guo Qian，Zhung Hua
摘要： 木文研究单向纤维增强复合材料中瑞利波的传播特征.以平面弹性理论为基础，推导得到频域动力学平衡方程.考虑材料的熟弹性及各向异性，采用有限元频域方法，建立激光等效力源作用在碳
纤维增强环氧树脂复合平板上激发瑞利波的数值模型，进而研究各向同性和各向异性平面中瑞利波的传播特征，并分析材料的熟弹性对瑞利波传播的影响.此外，研究复合平板的厚度变化对瑞利波传播特
征的影响，随着平板厚度的减小，瑞利波逐渐向兰姆波转化，得到低频的非色散的对称模S0模和色散的反对称模AO模.在此基础上，研究双层系统中激光激发瑞利波的传播和衰减特征，瑞利波的高频成分透
入深度浅，受薄膜的影响较大，而低频成分受基底的影响较大，在碳纤维增强环氧树脂薄膜/铝基底和碳纤维增强环氧树脂薄膜/有机玻璃基底这两种双层系统中，分别得到正常色散及反常色散的瑞利波.
| [1]Han Q B, Qian M L. Analysis of laser-genera- ted viscoelastic Raylcigh wave on viscoelastic materials. Acta Acustica, 2007，32(1):338一 342.韩庆邦，钱梦缘.激光激发粘弹表面波特性分析.声学学报，2007, 32(4); 338-342). [2]Sun H X, Xu B Q. Numerical analysis of laser- generated Lamb waves by finite clement method in time and frequency domain. Chinese Journal Lasers, 2010, 37(2); 537-542.(孙宏祥，许伯强.激光激发Lamb波的有限元时域和频域数值分析.中国激光，2010, 37(2) ; 537-542). [3]Zhu Z M, Wu J R.The propagation of Lamb waves in a plate bordered with a viscous liquid. Journal of the Acoustical Society of America, 1995，9802):1057一1064. [4]Drinkwater B, Castaings M, Hosten B. The measurement of A。and S。Lamb wave attenua- tion to determine the normal and shear stiffnes- ses of a compressivcly loaded interface. Journal of the Acoustical Society of America, 2003，113 (6):3161一3170. [5]Simonetti F. Lamb wave propagation in elastic plates coated with viscoelastic materials. Jour nal of the Acoustical Society of America, 2004 115(5):2041一2053. [6Hosten B, Castaings M. FE modeling of Lamb mode diffraction by defects in anisotropic viscoe- lactic plates. independent NondestructiveTee ting and Evaluation, 2006，39(3):195一204. [7]Shcn Z H，Xu B Q, Ni X W,et al. Numerical simulation of pulsed laser induced ultrasound in monolaycr and double layer materials. Chinese Journal Lasers，2001，31(10):127一1280. (沈中华，许伯强，倪晓武等.单层和双层材料中的脉冲激光超声数值模拟.中国激光，200, 31(10):1275一1280. [8]Miao P C, Mi X B, Zhang S Y，et al. FEM a- nalysis of transient temperature fields of sam- ples with defects during ultrasonic pulse excita- tion. Journal of Nanjing University(Natural Sciences)，2005，41(1):98一10}.(缪鹏程，米小兵，张淑仪等.超声红外热像检测中缺陷发热的瞬态温度场的有限元分析.南京大学学报(自然科学)，2005, 41(1): 98-104 [9]Wang T H，Ghang H，Zhou F M,et al. Canti- levered ultrasonic micro-motors using piczocler tric tubes with 1 mm diameter. Journal of Nan- jing University(Natural Sciences)，2007，43 (4): 419-425.(土天华，张辉，周凤梅等. 1 mm管式悬臂梁结构微型超声马达研究.南京大学学报(自然科学)，2007, 43(4): 419- 425). [10]Xu B Q, Feng J，Xu G D et al. Laser-generated thcrmoclastic acoustic sources and Lamb waves in anisotropic plates. Applied Physics A:Matr rials Science g- Processing, 2008，91(1):173一179. [11]Hosten B, Castaings M. Finite elements meth ods for modeling the guided waves prpagation in structures with weak interfaces.Journal of the Acoustical Society of America, 2005,117 (3):1108一1113. [12]Schubert F, Kochlcr B, Pciffcr A. Time do- main modeling of axisymmetric wave propaga- tion in isotropic elastic media with CEFIT-cylin- drical clastodynamic finite integration technique. Journal of Computational Acoustics, 2001，9 (3):1127一1146. [13]Mukdadi O M, Datta S K.Transicnt ultrasonic guided waves in bi-layered anisotropic plates with rectangular cross section. Review of Quan- titative Nondestructive Evaluation, 2004，23: 238一245. [14]Sun H X, Xu B Q, Zhang H,et al. influence of adhesive layer properties on lasci-generated ul- trasonic waves in thin bonded plates. Chinese Physics B, 2011，20(1):014302. [15]Castaings M, Lowe M. Finite clement model for waves guided along solid systems of arbitrar- y section coupled to infinite solid media. Journal of the Acoustical Society of America, 2008，123 (2):696一708. [16]Auld B A. Acoustic fields and waves in solids.Malabar, Florida: R. E. Kricgcr Publishing Company, 1990，878. |
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