CAJ | 학술논문

以某型传动功率较大的具有中央锥齿轮啮合作用和挤压油膜阻尼器的航空发动机转子支承系统为对象，采用弯扭耦合传递矩阵法计算临界转速、横向振动固有频率、稳态不平衡响应和初始弯曲响应。着重研究锥齿轮啮合作用下轴承力幅频特性，介绍寻找峰值转速的方法，发现在中央锥齿轮啮合作用下,出现了临界转速以外力幅最大的峰值转速，并对机匣振动幅频特性试验曲线进行分析。研究降低峰值转速下振动水平的方法及支承方案对发动机转子—支承系统振动特性的影响，得出了有工程参考价值的结论。
이모형전동공솔교대적구유중앙추치륜교합작용화제압유막조니기적항공발동궤전자지승계통위대상，채용만뉴우합전체구진법계산림계전속、횡향진동고유빈솔、은태불평형향응화초시만곡향응。착중연구추치륜교합작용하축승력폭빈특성，개소심조봉치전속적방법，발현재중앙추치륜교합작용하,출현료림계전속이외력폭최대적봉치전속，병대궤갑진동폭빈특성시험곡선진행분석。연구강저봉치전속하진동수평적방법급지승방안대발동궤전자—지승계통진동특성적영향，득출료유공정삼고개치적결론。
The object for this study is the rotor-support system of a bigger transmission power aeroengine with engaged action of central bevel gears and Square Film Damper(SFD), critical speed and natural frequency of transverse vibration and static unbalance response and intial bending response are computed by using the transfer matrixes of bending-torsional coupling method. The main aim is to study the amplitude-frequency character of support force with engaged action of bevel gears;to find a method for determining peak speeds; to discover peak speeds of maximal amplitude of support force beyond critical speeds when a system has engagement of central bevel gears; and to analyse the test curve of amplitude-frequency character. For the case, we put forward the methods for decreasing vibration at the peak speeds and study the influence of support plan for vibrational character of rotor-support system of the aeroengine.