Based on the theoretical analysis,the theory on ultrasonic guide waves and dispersion equation is studied. The dispersion curves were numerically calculated.
对导波理论以及导波的频散方程进行了理论研究,并对频散方程进行了数值计算。
参考来源 - 含裂纹管道损伤检测的数值研究·2,447,543篇论文数据，部分数据来源于NoteExpress
推导出自由单层板频散方程的矩阵表达形式。
Matrix expression for dispersion equation of a single plate was derived.
文章认为，在时间伸展变换的情况下，频散方程将不是一个圆，而是一个椭圆。
It is deemed that with the variation of time extension, the dispersion equation should be an ellipse rather than a circle.
对于简正波，运用高效数值方法解频散方程，提高了简正波的计算精确和速度。
To obtain accurate normal modes quickly, the frequency dispersion equation was solved by an efficient numerical algorithm.
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