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对各向同性弹性固体地层包围的固体圆柱中,对称点源激发的声波场进行了理论求解和数值研究.详细分析了沿圆柱方向传播的导波的频散及激发特性,分析并计算了声波场沿柱体外介质纵、横波支点的割线积分.在分波分析的基础上,进行了瞬态全波场的数值模拟,计算了不同地层参数下圆柱界面上不同点径向切应力和径向法应力的瞬态全波曲线.
In a solid cylinder surrounded by an isotropic elastic solid formation, the acoustic field excited by the symmetric point source is theoretically solved and numerically studied. The dispersion and excitation characteristics of the guided wave propagating in the cylinder direction are analyzed in detail. And the secant integrals of the longitudinal and transverse fulcrums of the media along the column.On the basis of the partial wave analysis, the numerical simulation of the transient full-wave field is carried out and the radial shear stress and the diameter at different points on the cylindrical interface are calculated Transient full wave curve to normal stress.