重型液力自动变速器行星排非线性动力学分析  

Nonlinear dynamic analysis of the planetary row of a heavy-duty hydraulic automatic transmission

作　　者：田浪涛 吴怀超[1] 聂龙[2] 潘克强[2] 路芳[2] 陈兴燕[2] TIAN Langtao;WU Huaichao;NIE Long;PAN Keqiang;LU Fang;CHEN Xingyan(School of Mechanical Engineer,Guizhou University,Guiyang 550025,China;Guizhou Institute of Technology,Guiyang 550003,China)

机构地区：[1]贵州大学机械工程学院,贵阳550025 [2]贵州理工学院,贵阳550003

出　　处：《现代制造工程》2024年第5期86-94,共9页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51965011);贵州省基础研究计划项目(黔科合基础-ZK[2023]一般133);贵州省高等学校重点实验室项目(黔教技[2023]009号)。

摘　　要：建立了重型液力自动变速器在某挡位下行星齿轮传动系统的非线性纯扭转动力学模型,该挡位工作模式充分体现了行星排之间的复合关系,该动力学模型综合考虑了时变啮合刚度、齿侧间隙与啮合误差幅值等系统内部激励因素,在此基础上推导出系统在广义坐标下的无量纲动力学方程。采用4阶龙格-库塔法对非线性微分方程组进行求解,得到了系统的非线性动态响应。综合运用时域响应、频域响应、相平面图、系统分岔和Poincare截面研究了具体的输入转速与系统响应的关系,得出了该挡位下的合理转速。研究了复合结构导致的各级行星排之间的响应差异,发现单个行星排可以影响甚至决定整个传动系统的响应,可以此为根据指导生产制造,降低生产成本。A nonlinear pure torsional dynamic model of a planetary gear transmission system in a specific gear position of a heavy-duty hydraulic automatic transmission was developed.This gear mode demonstrates a fully compound relationship between the plantary rows.The dynamic model synthetically considers the internal excitation factors of the system,such as the time-varying meshing stiffness,the tooth side clearance and the meshing error amplitude.On the basis of which the dimensional-dynamic equation of the system in generalized coordinates was derived.The fourth-order Runge-Kutta method was used to solve the nonlinear differential equation system,and the nonlinear dynamic response of the system was obtained.A combination of time-domain response,frequency-domain response,phase-space trajectory,system bifurcation,and Poincare cross-section was used to investigate the relationship between the specific input speed and the system response,resulting in a reasonable speed for the gear.The response differences between the planetary rows at different levels caused by the composite structure were studied.It is found that a single planetary row can affect or even determine the response of the whole transmission system,which can be used to guide the production and reduce the production cost.

关 键 词：重型液力自动变速器 行星排 非线性动力学 

分 类 号：TH17[机械工程—机械制造及自动化] U463.221.2[机械工程—车辆工程] N93[交通运输工程—载运工具运用工程]