钻机起升动载研究

Study on the Rig Lifting Dynamic Load

根据机械振动理论，提出了起升加速度作用下的钻柱振动微分方程及其解法。找出了动载系数与起升加速度之比随时间的变化规律。结论认为，当起升加速度较大时，其起升动载不可忽视。

Based on the mechanical vibration theory,the paper put forword the differential equition of string vibration and its solving method,and found out the changing rule of the ratio of dynamic load coefficient to lifting acceleration with time.A conclusion is drawn that the lifting dynamic load can not be negbected while lifting acceleration is big.