摘要
齿轮副动态啮合特性不仅受齿轮系统本身的影响,还与壳体动态性能密切相关。对变速器壳体模态进行仿真分析和实验测试,采用模态频率误差评价和模态相关分析方法,验证分析了有限元分析模型的有效性。基于多体动力学理论,构建考虑壳体弹性振动特性影响的齿轮系统耦合振动分析模型,对比分析有无柔性壳体状态的齿轮副啮合错位量、接触斑点、传动误差及动态啮合力等动态啮合特性参数。通过接触斑点实验对比分析仿真计算的接触区域,结果表明壳体弹性变形对齿轮副啮合斑点有明显影响。采取提高变速器壳体刚度的技术措施对壳体进行结构优化,优化后的齿轮副动态啮合特性显著改善。
The meshing performance of a gear pair is affected not only by its gear system but also by the dynamical characteristics of its gearbox body. The modes of a gearbox body were analyzed with simulation and tests. The effectiveness of its FE simulation model was verified using the modal frequency error evaluation method and the modal assurance criterion. Based on the multi-body dynamics theory, the coupled vibration analysis model of a gear system was constructed considering influences of its flexible gearbox body. Mesh misalignment, contact pattern, transmission error and dynamic meshing force of a gear pair of the gear system with or without flexible gearbox body were analyzed comparatively. The contact patterns of the gear pair were tested and the results were compared with those of the numerical simulation. The results showed that the gearbox body,s elastic deformation has obvious effects on the mesh contact patterns of the gear pair; adopting technical measures to optimize the gearbox body＇ s structure and enhance its stiffness, the dynamic meshing performance of the gear pair of the optimized gear system is improved significantly.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第13期140-145,共6页
Journal of Vibration and Shock
基金
汽车零部件制造及检测技术教育部重点实验室2012年度开放基金资助项目
重庆市汽车动力系统及控制工程技术研究中心能力提升项目(cstc2014pt-gc60003)
重庆理工大学研究生创新基金资助项目(YCX2015206)
关键词
柔性壳体
齿轮副
动态啮合特性
多体动力学
flexible gearbox body
gear pair
dynamic meshing performance
multi-body dynamics
