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以一个2对斜齿轮耦合的三平行轴转子系统为研究对象,考虑静态传递误差、齿轮几何偏心等因素的影响,建立了全自由度通用齿轮啮合动力学模型,并将其与转子系统有限元模型进行耦合,建立了平行轴系齿轮转子系统的有限元模型,其中转子系统采用梁单元来模拟,齿轮之间的啮合通过啮合刚度矩阵和阻尼矩阵来模拟,最后分析了静态传递误差、转子质量不平衡、齿轮几何偏心以及三者耦合对系统动力学特性的影响.研究结果表明:齿轮几何偏心对啮合力有很大影响,其作用相当于一个扭矩作用于齿轮.
Taking a pair of helical gear-coupled three-parallel-axis rotor system as the research object, a general-degree-of-freedom gearing meshing dynamics model was established considering the influence of static transmission error and gear geometric eccentricity, and was compared with the rotor system finite element The finite element model of the rotor system of a parallel shaft gear system is established. The rotor system is modeled by a beam element. The meshing between the gears is modeled by the meshing stiffness matrix and the damping matrix. Finally, the static transmission error, rotor mass Unbalance, gear geometry eccentricity and the influence of the three couplings on the system dynamics.The results show that the geometric eccentricity of the gear has a great influence on the meshing force, which acts as a torque acting on the gear.