In the experiments, a small-amplitude sine waveofdisplacement is modulated to shear loading to study the effects of shear stress perturbation on stick-slip instability.
实验中通过在剪切方向上叠加正弦波状的位移扰动，研究了剪应力扰动对断层粘滑失稳的影响。
2
The equation ofdisplacementwave and sound pressure wave in the sound velocity experiment are derived. And their relation is analyzed.
推导了声速测定实验中合成声场的位移波动方程、声压波动方程以及两者之间的关系。
3
Based on wave equation, the formula ofdisplacement and strain in different section are derived, and the frequency equation is given.