【摘要】 正、反演计算是瑞雷波法在无损检测中必不可少的重要工作。为了验证正、反演方法和检测的正确性,根据弹性动力学方程,采用交错网格有限差分方法对均匀弹性半空间介质进行全波场模拟,动态显示了瑞雷波在地表面的传播状态,获得了瑞雷波在地表的传播状态。提取其瑞雷波频散曲线,利用遗传算法进行反演,来检测其方法的实用性。更多还原

【Abstract】 The positive and inverse calculation is a necessary and important work in the non-destructive testing of the Rayleigh wave method. To verify the correctness of the results,this paper uses the staggered grid finite difference method to simulate the full wave field of the homogeneous elastic half space medium,based on the elastic dynamic equation. The Rayleigh wave dynamically displays the spread state on earth surface. The spread state of the Rayleigh ware is obtained on the earth surface. Then the dispersion curves of Rayleigh wave are extracted and the genetic algorithm is used to detect the practicability of the method.更多还原