首先利用付里叶变换，使问题的求解转换成对一对变量为裂纹面上位移差的对偶积分方程的求解。
By using the Fourier transform, the problem can be solved with a pair of dual integral equations in which the unknown variable is the jump of displacements across the crack surfaces.
该转换表达式避免了数值积分法求解蠕变柔量值产生舍入误差和采用拉氏变换的繁琐计算。
This expression avoids rounding error brought by numerical integral method and complex calculation of Laplace transforms.
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