CAJ | 학술논문

以五支点双转子系统为研究对象，开展反向旋转双转子系统加速响应特性研究。结合有限元分析软件，利用固定界面模态综合法建立反向旋转双转子试验器的瞬态动力学模型，研究反向旋转双转子系统加速过程中加速时域特性、进动转速变化特性及内外转子盘质心变化规律。研究结果表明，转子各截面加速响应特性与系统各阶临界转速及振型有密切联系；加速过程中存在复杂的非协调进动；内、外转子分别在以各自为主激励的临界转速附近发生质心换向；经试验验证，试验数据与计算结果吻合性较好。
이오지점쌍전자계통위연구대상，개전반향선전쌍전자계통가속향응특성연구。결합유한원분석연건，이용고정계면모태종합법건립반향선전쌍전자시험기적순태동역학모형，연구반향선전쌍전자계통가속과정중가속시역특성、진동전속변화특성급내외전자반질심변화규률。연구결과표명，전자각절면가속향응특성여계통각계림계전속급진형유밀절련계；가속과정중존재복잡적비협조진동；내、외전자분별재이각자위주격려적림계전속부근발생질심환향；경시험험증，시험수거여계산결과문합성교호。
The acceleration response characteristics of a five-support counter-rotating dual-rotor system were studied.A transient dynamic model of the experimental counter-rotating dual-rotor system was established with finite element analysis software by using fixed interface modal synthesis method.The acceleration time-domain characteristics, the precession speed variation characteristics and the change laws of centroid of each disk in the rotor system were analyzed during an accelerating process.The study results show that:the acceleration response characteristics of various cross-sections have a close relation with critical speeds and mode shapes of the rotor system;complex nonsynchronous precession exists in the accelerating process;the centroid shifts of inner and outer rotors occur at their incentive critical speed respectively.Experimental verification was carried out,and the calculation results are in good agreement with experiment data.