Based on the propagation theory of acoustic waves in anisotropic media, the angular dispersion curves of SAW velocities propagated in some unusual oriented, such as (0 1 6)- and (3 3 1)-oriented, Body-Centered Cubic (BCC) single crystals are simulated using an optimized numerical method. Meanwhile, the angular dispersion curves of SAW velocities propagated in these unusual oriented BCC single crystals are measured by Impulsive Stimulated Scattering (ISS) laser ultrasonic method, which show that the measurement results are in good agreement with those of the simulations. By the optimized numerical method, the relationships between the temperature and the dispersion curves of SAW velocity propagated in these single crystals are also simulated.

基于声波在各向异性介质中的传播理论，声表面波速度的角色散曲线以一些不寻常的方向传播，例如（0  1  6）-和（3  3  1）-方向，体心立方（BCC）使用优化的数值方法模拟晶体。同时，利用脉冲激发散射（ISS）激光超声法测量了这些取向异常的BCC单晶中SAW速度的角色散曲线，表明测量结果与模拟结果吻合良好。通过优化的数值方法，还模拟了温度与这些单晶中传播的声表面波速度的色散曲线之间的关系。