Nonlinear dynamics of aircraft blended face gear split transmission system
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摘要:
在考虑支撑刚度、时变啮合刚度、齿侧间隙、综合传动误差、轴承刚度等多种因素的前提下,建立混交面齿轮分流传动系统的非线性动力学模型,研究混交面齿轮分流传动系统的非线性动力学特性。采用Runge-Kutta积分方法对系统微分动力学方程进行求解,系统的非线性特征通过相平面图、时域图、频域图和庞加莱截面图小波分析图来描述,并用分分岔图描述外部激励频率和刚度对系统的非线性行为的影响。结果表明:在不同的外部激励和刚度作用下,系统将会呈现周期-混沌交替的运动特性。
Abstract:On the premise of considering many factors, such as support stiffness, time-varying meshing stiffness, tooth backlash, comprehensive transmission error, bearing stiffness, etc, the nonlinear dynamic model of blended face gear split transmission system was established. The nonlinear dynamic characteristics of mixed face gear split transmission system were studied. The differential dynamic equation of the system was solved by Runge-Kutta integral method. The nonlinear characteristics of the system were described by phase plane diagram, time domain diagram, frequency domain diagram and Poincare section wavelet analysis diagram, and the bifurcation diagram was used to describe the influences of external excitation frequency and stiffness on the nonlinear behavior of the system. The results showed that under the action of different external excitation and meshing stiffness, the system could present periodic-chaotic alternating motion characteristics.
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Key words:
- nonlinear dynamics /
- blended /
- face gear /
- split transmission /
- wavelet analysis
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表 1 混交面齿轮分流传动系统参数
Table 1. System parameters of blended face gear split transmission system
参数 数值 圆柱齿轮齿数 z1 23 正交面齿轮齿数 z2 179 非正交面齿轮齿数 z3 179 圆柱齿轮质量 m1/kg 1.7 正交面齿轮质量 m2/kg 42 非正交面齿轮质量 m3/kg 48 模数 m/mm 2.5 压力角 αn/(°) 25 圆柱齿轮转动惯量 J1/10−3 (kg·m2) 0.14 正交面齿轮转动惯量 J2/(kg·m2) 2.06 非正交面齿轮转动惯量 J3/(kg·m2) 2.39 表 2 轴承技术参数
Table 2. Bearing technical parameters
参数 数值 面齿轮级 圆柱齿轮级轴承 质量/kg 1 0.5 内径/m 0.10 0.04 外径/m 0.18 0.08 宽度/m 0.034 0.018 -
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