梯形应力脉冲在弹性杆中的传播过程和几何弥散1)
杨洪升*,李玉龙*,周风华2)()
THE PROPAGATION PROCESS AND THE GEOMETRIC DISPERSION OF A TRAPEZOIDAL STRESS PULSE IN AN ELASTIC ROD 1)
Yang Hongsheng*,Li Yulong*,Zhou Fenghua2)()

图3. 反 Laplace 变换的 Bromwich 积分路径及被积函数奇点分布

Fig.3. The Bromwich integral contour for the inverse Laplace transform and the singularity distributions of the integrand