中文摘要：

高造斜井眼轨迹控制工具是一种新型无极、可调的旋转导向钻井工具,代表着当今高精度定向钻进技术的方向,是导向钻井技术一次质的飞跃。其主轴受到径向载荷、冲击载荷等的作用,无可避免会发生振动,因振动可能会形成结构的共振,从而对工具造成损坏。本文基于哈密顿原理建立主轴的模态有限元模型,完成主轴自振频率的求解,利用u Tek Ma模态分析软件完成主轴的模态分析测试,实验所测结果与数值计算结果相当,验证了模型以及计算的正确性,为主轴的动力学分析提供基础。

英文摘要：

Borehole trajectory control tool is a new type of stepless and adjustable rotary steering drilling tool. It represents the direction of the high precision directional drilling technology,which is a qualitative leap in the direction of drilling technology. The main shaft can not avoid the vibration due to the radial load,impact load and so on,as the vibration may form the structure of the resonance,resulting in damage to the tool. The modal finite element model of the principal axis is established based on the Hamilton principle,solving spindle vibration frequency,modal analysis of the spindle is done by using uTekMa modal analysis software. And the experimental results are comparable with the numerical results,so the correctness of the model and the calculation is verified,provide the basis for the dynamic analysis of the spindle.