摘要
为研究某新型汽车门锁中的塑料斜齿轮在工作条件下的轮齿受力情况,运用Abaqus建立了斜齿轮啮合的有限元模型,基于非线性接触算法对塑料斜齿轮的接触过程进行了仿真分析,并得到塑料斜齿轮的接触应力与弯曲应力。运用刘易斯方程及齿轮赫兹应力理论对塑料斜齿轮啮合过程中的许用应力进行了理论计算,并与有限元仿真结果进行对比;结果验证了塑料齿轮的强度满足实际工作的要求,并指出齿轮正常啮合过程中最大接触应力出现在齿轮双齿啮合区间,而最大弯曲应力发生在两齿啮合即将进入三齿啮合位置,此时齿轮容易发生疲劳破坏,提出了提高齿轮轮齿强度的改进方案。研究为塑料齿轮的强度分析提供了理论依据。
To study the stress of plastic helical gears in the new type car door lock under the working condition,establish the finite element model of helical gear mesh through ABAQUS,the contact process of plastic helical gears is simulated and analyzed based on nonlinear contact algorithm,and obtain the contact stress and bending stress of plastic helical gears. According to Lewis equation and gear Hertz stress theory to calculate the stress of the plastic helical gear meshing process,and compare with the finite element simulation results. The results verify the strength of plastic gears meet actual requirements,and point out the maximum contact stress in the normal engagement process appears in the double teeth meshing zone,the maximum bending stress appears in the three teeth meshing zone,gear prone to fatigue failure in those positions,propose advice to improve the strength of the gear teeth. The study prodives theory basis for the strength analysis of plastic gears.
出处
《机械强度》
CAS
CSCD
北大核心
2017年第1期143-148,共6页
Journal of Mechanical Strength
关键词
塑料斜齿轮
有限元分析
动态接触分析
齿轮强度
Plastic helical gear
Finite element analysis
Dynamic contact analysis
Gear strength
