本文介绍了一种利用慢度曲面判断三方晶系晶体纯模轴的方法.通过研究弹性波在垂直于Z轴的平面内及在YZ和ZX平面内传播时的慢度曲线,不难发现弹性波的能量速度和相速度一致的方向,该方向即为晶体的纯模轴.
A method of obtaining the pure mode direction of the trigonal system by the slowness surfaces is introduced. By the slowness curves of propagation normal to the Z-axis and propagation in the YZ and XZ planes, we can easily find the direction that both the energy velocity and the phase velocity direct to. This crystal direction is the pure mode direction.
参考文献
| [1] | Auld B A.Acoustic Fields and Waves in Solids[M].New York:A Wlley-Interscience Publication,1973:213-241. |
| [2] | 陈钢;廖理几.晶体物理学基础[M].北京:科学出版社,1992:237-243. |
| [3] | M. Schubert;W. Grill .Determination of the group and phase velocity surfaces of acoustic waves in anisotropic materials by ultrasonic acoustic microscopy with phase contrast[J].Ultrasonics,1998(1/5):367-370. |
| [4] | Sahay S K;Kline R A;Mignogna R .Phase and Group Velocity Considerations for Dynamic Modulus Measurement in Anisotropic Media[J].Ultrasonics,1992,30(06):373-382. |
| [5] | Ichchou MN;Akrout S;Mencik JM .Guided waves group and energy velocities via finite elements[J].Journal of Sound and Vibration,2007(4/5):931-944. |
| [6] | 王莉.波的群速与能量的传播速度[J].天津商学院学报,2002(03):40-42,53. |
| [7] | Karl J langenbetg;Marklein R .Transient Elastic Waves Applied to Nondestructive Testing of Transversely Isotropic Lossless Materials:a Coordinate-free Approach[J].Wave Motion,2005,41(03):247-261. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%