Dynamic characteristics and load-sharing performance of concentric face gear split-torque transmission systems with time-varying mesh stiffness, flexible supports and deformable shafts
Dynamic characteristics and load-sharing performance of concentric face gear split-torque transmission systems with time-varying mesh stiffness, flexible supports and deformable shafts
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DOI：
10.1007/s11012-021-01423-2
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发表时间：
2021-09
期刊：
影响因子：
2.7
通讯作者：
Jian Dong;Qibo Wang;Jinyuan Tang;Zehua Hu;Xiaoqian Li
中科院分区：
文献类型：
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作者：
Jian Dong;Qibo Wang;Jinyuan Tang;Zehua Hu;Xiaoqian Li
同心面齿轮分力矩传动系统是一种集面齿轮、分力矩传动和同心传动优点于一体的新型齿轮机构。多支路输电提高了系统的负荷能力。然而，支路间负荷分担的一致性严重制约了整个系统的使用寿命。根据牛顿定理，建立了六自由度齿轮振动、输入轴扭转、齿轮副啮合和轴承支承耦合的集中参数模型。该动力学模型考虑了齿侧间隙、啮合阻尼、支承刚度、时变啮合刚度和修正传动误差等因素。利用Runge-Kutta数值积分法得到了动力学方程的离散解。对其固有特性和动态均载性能进行了研究。此外，还探讨了扭转刚度、齿侧间隙和时变啮合刚度等因素对动载均载的影响。结果表明，上述因素对动载均载性能有较大影响，并观察到齿面脱齿现象。
The concentric face gear split-torque transmission system is a new gear mechanism which integrates the advantages of face gears, split-torque transmissions and concentric transmissions. The power transmission through multiple branches improves the systematic load capacity. However, the uniformity of load sharing between branches seriously restricts the service life of the entire system. According to the Newton theorem, a lumped parameter model coupled with the vibrations of the gear with six degrees of freedom, the torsion of input shafts, the meshing of gear pairs, and the bearing supporting is established. Gear backlash, meshing damping, support stiffness, time-varying mesh stiffness, and modified transmission errors are considered in this dynamic model. The discrete solution of dynamic equations is obtained by using the numerical integral method of Runge–Kutta. Natural characteristics and the performance of dynamic load sharing are investigated. Furthermore, the effects of the factors including torsional stiffness, gear backlash and time-varying mesh stiffness on dynamic load sharing are explored. The results indicate that the above-mentioned factors greatly affect the performance of dynamic load sharing, and the phenomenon of tooth disengagement is observed.