CAJ | 학술논문

为了更准确地预测旋挖钻机钻杆的振动特性，在分析钻杆振动机理的基础上，文章基于 Hamilton变分原理和有限元理论，建立了钻杆的轴向和横向耦合振动的动力学模型，采用Newmark-β法仿真分析了钻杆的振动响应。结果表明，钻杆横向振动的位移比轴向振动位移大很多，并且第5节钻杆的振动位移和耦合振动幅值波动都比第1节钻杆大。同时，对旋挖钻机第1节钻杆工况进行了试验，对比试验结果和仿真结果，发现试验曲线与耦合模型的仿真曲线的位移响应历程变化趋势相似，验证了钻杆耦合振动仿真模型的可行性，说明考虑轴向与横向耦合振动能更好地反映钻杆的动力学特性。
위료경준학지예측선알찬궤찬간적진동특성，재분석찬간진동궤리적기출상，문장기우 Hamilton변분원리화유한원이론，건립료찬간적축향화횡향우합진동적동역학모형，채용Newmark-β법방진분석료찬간적진동향응。결과표명，찬간횡향진동적위이비축향진동위이대흔다，병차제5절찬간적진동위이화우합진동폭치파동도비제1절찬간대。동시，대선알찬궤제1절찬간공황진행료시험，대비시험결과화방진결과，발현시험곡선여우합모형적방진곡선적위이향응역정변화추세상사，험증료찬간우합진동방진모형적가행성，설명고필축향여횡향우합진동능경호지반영찬간적동역학특성。
In order to predict the vibration characteristics of the drill pipe for rotary drilling rig more ac-curately ,through the analysis of the vibration mechanism of drill pipe ,the dynamic model of coupled axial and transverse vibrations was established based on Hamilton variation principle and finite ele-ment theory .The Newmark-βmethod was adopted to simulate the vibration responses of drill pipe . The results show that the transverse displacement is much larger than the axial displacement ,and the vibration displacement and vibration fluctuation of the fifth section are larger than those of the first section .The working condition of the first section of the drill pipe for rotary drilling rig was tested . By comparing the test results with the simulation ones ,it is found that the trends of the displacement responses in both test and coupled curves have good agreement .The feasibility of simulation model is verified by the experiment .It is indicated that the model of coupled axial and transverse vibrations can better reflect the dynamic characteristics of drill pipe .