颗粒阻尼器配置对齿轮传动系统动特性影响

发布时间：2018-03-02 06:01

本文关键词： 颗粒阻尼器齿轮传动离心场离散元方法动特性　出处：《机械工程学报》2017年07期 　论文类型：期刊论文

【摘要】：齿轮传动正朝着高速、重载和高精度方向发展,对其动态性能要求越来越高。颗粒阻尼通过颗粒间、颗粒与阻尼器壁间的非弹性碰撞和摩擦作用耗能,具有减振效果显著、耐高温、各向同性、对原结构改动小等优点。利用有限元法对齿轮进行了有预应力的模态分析,通过齿轮系统动力学分析,研究单双齿啮合激励对齿轮传动的影响;同时建立齿轮传动离心场中颗粒系统耗能模型,将离散元法计算颗粒系统耗能和试验测试对比,分析阻尼器配置对齿轮传动系统动特性的影响。结果显示,阻尼器配置方案是影响齿轮传动系统动特性的一个重要因素,在阻尼孔中填充一定数量的颗粒,当阻尼器总体积相同且齿轮结构静刚度相差不大时,阻尼器个数越多颗粒系统能耗越大;当阻尼孔直径相同时,阻尼孔个数越多颗粒系统总能耗越小;当阻尼孔个数相同时,阻尼孔直径越大颗粒系统能耗越小。通过试验和仿真对比验证了模型的正确性,为颗粒阻尼在离心场中的应用提供重要的理论依据。
[Abstract]:Gear transmission is developing in the direction of high speed, heavy load and high precision, which requires higher and higher dynamic performance. The advantages of high temperature resistance, isotropy, little change to the original structure and so on. The modal analysis of gear with prestressing force is carried out by using finite element method, and the influence of meshing excitation of single and double teeth on gear transmission is studied by dynamic analysis of gear system. At the same time, the energy dissipation model of particle system in centrifugal field of gear transmission is established. The energy consumption of particle system calculated by discrete element method is compared with that of test, and the effect of damper configuration on dynamic characteristics of gear transmission system is analyzed. Damper configuration is an important factor affecting the dynamic characteristics of gear transmission system. When a certain number of particles are filled in the damping hole, when the total volume of the damper is the same and the static stiffness of the gear structure is not different, When the diameter of damping holes is the same, the total energy consumption of particle system is smaller when the diameter of damping holes is the same, and when the number of damping holes is the same, The larger the diameter of the damping hole, the smaller the energy consumption of the particle system. The correctness of the model is verified by experiment and simulation, which provides an important theoretical basis for the application of particle damping in centrifugal field.
【作者单位】：厦门大学航空航天学院;北京科技大学机械工程学院;北京宇航系统工程研究所;
【基金】：国家自然科学基金(51205382) 福建省重点科技专项(2016H0032) 中央高校基本科研业务费专项资金(20720150117) 福建省高端装备制造协同创新中心资助项目
【分类号】：TH132.41

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