摘要
为分析齿轮轴复杂变形(弯曲变形与扭转变形的耦合)对斜齿轮接触状态的影响,利用有限元方法,研究了齿轮轴变形下斜齿轮传动系统的接触特性。通过有限差分法计算齿轮轴变形量,以及ISO 6336-1标准对齿轮啮合刚度的计算,验证了有限元方法和模型的正确性。通过分析齿轮轴特性,建立了刚性和柔性齿轮轴两种有限元模型。计算结果表明,齿轮轴的变形会影响齿轮齿向载荷分布、接触应力分布、齿根弯曲应力分布,从而引起偏载现象,并且增加了齿轮啮合重合度,降低了齿轮的啮合刚度。
A finite element model for transmission is developed for the contact analysis of helical gear in considering gear shaft deformation. The finite element method and model are validated by using the finitedifference method to calculate the deformation of gear shaft and the ISO 6336-1 standard to calculate the mesh stiffness. The distribution of contact force along the tooth width,tooth von Mises stress,tooth root bending stress and contact force of each tooth pair during meshing process are obtained from two finite element models of rigid and flexible shafts. Contact ratio and mesh stiffness are performed between two gear teeth at different contact positions during meshing process. The results show that the deformation of gear shaft affects the tooth load distribution along the tooth width,increases contact ratio,and decreases the mesh stiffness.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2015年第10期1975-1981,共7页
Acta Armamentarii
基金
国家科技支撑计划"精密齿轮传动设计和高档齿轮制造技术"项目(2014BAF08B01)
关键词
机械学
变速器
齿轮轴
变形
啮合刚度
接触分析
mechanics
transmission
gear shaft
deformation
mesh stiffness
contact analysis
