齿侧间隙影响的人字齿四分支传动非线性特性

发布时间：2018-11-18 08:52

【摘要】：为了分析齿侧间隙引起的船用重载人字齿轮功率四分支传动的非线性问题,结合集中参数理论,建立综合考虑时变刚度、啮合阻尼、支撑刚度及阻尼、齿侧间隙等非线性因素的动力学模型。基于人字齿轮轮齿加载接触仿真分析,提出一种精确计算人字齿轮副的时变啮合刚度激励的方法,采用数值解法,得到齿侧间隙影响下的系统在无冲击、单边冲击和双边冲击状态的动载系数和振幅。结果表明:功率四分支传动系统具有复杂的非线性特性,对齿侧间隙量的变化较为敏感,齿侧间隙从0μm~150μm变化时,系统载荷由双边冲击到单边冲击变化,齿侧间隙当大于某临界值后,系统的动力学特性不再随齿侧间隙的增大而改变。揭示了人字齿功率四分支传动非线性动态特性的变化规律,为该系统的动态均衡优化设计奠定了理论基础。
[Abstract]:In order to analyze the nonlinear problem of the power four-branch transmission of heavy-duty herringbone gear caused by tooth side clearance, combined with the theory of concentrated parameters, the time-varying stiffness, meshing damping, bracing stiffness and damping are considered synthetically. Dynamic model of nonlinear factors such as tooth side clearance. Based on the contact simulation analysis of herringbone gear tooth loading, an accurate method for calculating the time-varying meshing stiffness excitation of the herringbone gear pair is presented. The numerical solution is used to obtain the system with no impact under the influence of the tooth side clearance. Dynamic load coefficients and amplitudes of unilateral and bilateral shock states. The results show that the power four-branch transmission system has complex nonlinear characteristics and is sensitive to the change of tooth side clearance. When the tooth side clearance changes from 0 渭 m to 150 渭 m, the system load changes from bilateral impact to unilateral impact. When the tooth side clearance is larger than a certain critical value, the dynamic characteristics of the system no longer change with the increase of the tooth side gap. The variation law of nonlinear dynamic characteristics of herringbone power four-branch drive is revealed, which lays a theoretical foundation for the dynamic equilibrium optimization design of the system.
【作者单位】：西安工业大学机电学院;西北工业大学机电学院;
【基金】：国家自然科学基金项目(51705390) 中国博士后科学基金项目(2016M602937XB) 西安工业大学科研创新团队建设计划资助~~
【分类号】：TH132.41

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