论文部分内容阅读
从降低发动机振动的角度上提出了选择支承方案的原则。以某型机具有一对中央弧齿锥齿轮啮合的转子-机匣发动机系统为对象,研究了支承方案对发动机振动特性的影响。分别采用轴质量离散弯扭耦合传递矩阵法和轴质量均布的纯弯曲传递矩阵法,比较该机主轴采用二支承方案及三支承方案时系统的临界转速、不平衡响应和初始弯曲响应等振动特性,得出了该机采用三支承方案优于二支承方案的结论。
From the perspective of reducing engine vibration, the principle of selecting supporting scheme is put forward. In this paper, the effect of the bearing scheme on the vibration characteristics of the engine is studied in a rotor-crankcase engine system with a pair of central spiral bevel gears. The bending moment transfer matrix method with axis mass and the pure bending transfer matrix method with uniform shaft mass are respectively adopted to compare the vibration of the system such as critical speed, unbalance response and initial bending response when two or three supporting schemes are adopted for the main shaft of the machine. Characteristics, obtained the aircraft using three support program is superior to the two support program conclusion.