DYNAMIC RESPONSE OF MARBLE AND SANDSTONE UNDER ROTATIONAL STRESS
循环应力作用下大理岩砂岩的动态响应

After the phase difference between stress and strain was obtained, it is observed that oil saturated rock has more attenuation than water saturated one, while the attenuation of dry rock is very small. The dependence of attenuation on frequency is very strong, and sandstone is of obvious anisotropy. The variation trend of attenuation, modulus and Poisson ratio with increasing amplitude of sinusoidal stress is also of obvious anisotropy.