轮边三级减速系统非线性动力学特性分析

发布时间：2018-03-17 13:31

本文选题：电动轮车辆　切入点：轮边减速器　出处：《机械设计与制造》2017年05期 　论文类型：期刊论文

【摘要】：以电动轮车辆新型行星齿轮传动三级轮边减速器为研究对象,对影响系统动力学特性的非线性因素进行分析。结合系统的结构特点,运用集中质量法建立纯扭转非线性动力学模型。并在推导构件相对位移的基础上,运用牛顿力学方程得到结构的运动微分方程。根据数学方程,基于Simulink搭建三级减速系统非线性分析模型,多级行星齿轮传动的齿轮副齿侧间隙、时变啮合刚度和综合啮合误差等均包含在模型中。结果表明:由于齿侧间隙、时变啮合刚度和综合啮合误差等因素的存在使系统表现出明显的非线性动力学特性,并在一定范围内使得振动响应更加复杂,跳跃现象更加明显;系统阻尼系数在一定范围内可以减小系统的振动振幅;新型三级系统较传统系统的振动幅度更大,变化频率更快,刚度、误差和阻尼的影响效果更明显;为此类研究提供参考依据。
[Abstract]:Taking a new type of planetary gear drive three-stage wheel side reducer of electric wheel vehicle as the research object, the nonlinear factors affecting the dynamic characteristics of the system are analyzed, and the structural characteristics of the system are combined. The nonlinear dynamic model of pure torsion is established by means of the lumped mass method. On the basis of deducing the relative displacement of the members, the differential equations of motion of the structure are obtained by using Newtonian mechanics equation. The nonlinear analysis model of three-stage deceleration system is built based on Simulink. The gear pair side clearance, time-varying meshing stiffness and comprehensive meshing error of multistage planetary gear transmission are all included in the model. The existence of time-varying meshing stiffness and comprehensive meshing error makes the system show obvious nonlinear dynamic characteristics and makes the vibration response more complex and the jump phenomenon more obvious in a certain range. The damping coefficient of the system can reduce the vibration amplitude of the system in a certain range, and the new three-level system has a larger vibration amplitude, faster change frequency and more obvious effect of stiffness, error and damping. To provide reference for this kind of research.
【作者单位】：燕山大学机械工程学院;
【基金】：国家自然科学基金青年科学基金(51505411) 河北省科学技术研究与发展计划科技支撑计划项目(152176315)
【分类号】：TH132.46

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