摘要
时变啮合刚度是影响齿轮传动平稳性以及振动噪声的主要因素,现代表面处理工艺在提高齿轮服役寿命的同时,改变了轮齿表面组织性态。为研究表层改性工艺对齿轮啮合时变刚度的影响,建立轮齿功能梯度有限元模型,模拟改性工艺对齿轮表层的影响,提出基于势能原理的时变啮合刚度计算方法。结果表明,表层改性工艺显著提高了齿轮的啮合刚度,强化了齿轮的使用性能。
Time-varying mesh stiffness is the main factor affecting the transmission smoothness and vibration and noise of gearboxes. The modern surface treatment is widely employed to improve the service life of gearboxes through the modification of the subsurface state of gear teeth. To study the effect of the surface modification on the time-varying mesh stiffness, a finite element model is constructed with detailed functional gradient layers which model the effect caused by surface modification process, and a potential-energy based method is proposed to compute the time-varying mesh stiffness. The obtained results show that the surface modification can significantly improve the mesh stiffness of gears, and hence be beneficial to the service life of gearboxes.
作者
张龙飞
李安民
张二亮
ZHANG Longfei;LI Anmin;ZHANG Erliang(School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《机械工程师》
2019年第3期32-34,共3页
Mechanical Engineer
关键词
啮合刚度
表层改性
有限元
势能法
mesh stiffness
surface modification
finite element method
potential energy method
