用中心差分方法计算轴对称圆柱中的弹性波传播

Numerical Simulation for Elastic Waves Propagation in Axially Symmetric Column with Center Difference Scheme

利用中心差分法离散二维轴对称波动方程,计算了轴对称结石中的弹性波传播.结果表明:中心差分方法对具有规则几何形状的结石模型中位移波的传播模拟简单、容易实现,能够很好地反映位移随时间变化的情况.

ESWL is the first method to destroy the stones in human body, but the mechanism is not exactly known. By using center-difference shceme to discret the goveming equations, propagation of elastic waves in axially symmetric columns are simply simulated. The analyzed results indicate that the center difference scheme is capable of simply simulating and easily realizing the propagation of displacement waves, and reflecting well the changes of displacement with time.