中文摘要：

讨论了摩擦耗能镗杆的原理，建立了有非线性库仑干摩擦环节的力学模型，并以摩擦参数为变化量，通过数值分析的方法考察了模型的吸振效果。研制了一种基于摩擦减振的新型镗杆，结合颤振发生的机理与切削稳定性理论，分析了不同摩擦条件下镗杆的抑振效果。将不同摩擦条件下的镗杆切削实验结果与理论模型仿真结果进行对比，发现在既定的摩擦阻尼器中，有滑动摩擦与粘接两个状态，而且存在一个最优正压力使得滑动摩擦消耗能量达到最大值又不处于粘接的状态，此时系统抑振效果达到最佳。切削实验发现基于摩擦减振原理的镗杆有良好的颤振抑制效果。

英文摘要：

Principles of boring rod with friction energy dissipation were discussed, a mechanics model with nonlinear Coulomb dry friction link was established, and taking friction parameters as vat iables the vibration absorbing performance was studied through numerical analysis. A new type boring rod was developed based on friction damping principles, combining flutter mechanism and cutting sta bility theory, vibration suppression effects of boring rod were analyzed under different friction condi tions. Contrasting the results of cutting experiments with theoretical simulation, it has sliding friction state and adhesive state in established friction damper, and there is a positive pressure that makes energy consumption by sliding friction to reache the maximum but the system is not in the adhesive state, at this time the system achieves the best vibration suppression effect. Cutting experiments show that the boring rod with friction damping has good effect of chatter suppression.