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中文摘要：
深孔钻杆在钻削过程中易产生扭转振动，可通过在钻杆支架上设置动力减振器，来抑制钻杆的扭转振动；为了取得良好的减振效果，需要对常规设计方法得到的动力减振器进行优化。首先对深孔钻削扭振减振系统进行简化，得到系统附加动力减振器的运动方程及减振指标；再对动力减振器减振特性进行研究，初步确定最优结构参数的范围；最后根据在现实中的使用情况，提出目标函数对常规设计方法得到的动力减振器的各项参数进行优化。从而使得在结构设计阶段，通过选取合适的阻尼和刚度材料，使其在工作过程中减振效果最佳。
英文摘要：
Deep hole drill pipe can easily produce torsional vibration during drilling. Setting the dynamic absorber in the drill pipe bracket will reduce the torsional vibration of the drill pipe. In order to have a good damping effect, the optimal design of dynamic absorber, obtained by the conventional design method, will be needed. At first, simplifying the torsional vibration damping system of deep hole drilling, so the motion equation for the additional dynamic absorbers of the system and the damping index can be obtained. Then, the damping characteristics of dynamic absorbers is stud- ied to determine the optimal range of the structural parameters. Finally, according to the real application, the objective function is proposed to optimize the parameters of the dynamic absorber, so that the damping effect during operation is the best while the appropriate stiffness and damping material are being selected in the structural design stage.
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