准双曲面齿轮LTCA弯曲变形约束方法

发布时间：2019-04-04 14:59

【摘要】：针对现有准双曲面齿轮加载接触分析(LTCA)受载后得到的弯曲变形中包含由于柔性引起的变形和加载点与轮坯之间剪切变形的问题,提出了轮齿有限元模型约束方法用于消除柔性引起的变形和剪切变形。该约束方法在原有约束方法的基础上引入了约束轮坯内圈和轮齿中间平面的有限元模型,并给出了该约束方法对应的齿面法向柔度矩阵的计算过程。为验证该约束方法的正确性,将原约束方法、该约束方法及实验结果进行对比。结果表明:约束方法主要影响齿面加载接触印迹的范围,最大载荷时原有约束方法加载接触印迹到达齿面小端,而该约束方法的加载接触印迹在最大载荷时距离小端仍有3~4mm与实验结果吻合更好。
[Abstract]:Aiming at the problems of deformation caused by flexibility and shear deformation between loading point and billet in the bending deformation of (LTCA) under load, the contact analysis of existing hypoid gears under loading includes the deformation caused by flexibility and the shear deformation between the loading point and the wheel billet. The finite element model constraint method of gear teeth is proposed to eliminate the deformation and shear deformation caused by flexibility. On the basis of the original constraint method, the finite element model of the inner ring and the middle plane of the gear teeth is introduced, and the calculation process of the normal compliance matrix of the tooth surface corresponding to the constraint method is given. In order to verify the correctness of the constraint method, the original constraint method, the constraint method and the experimental results are compared. The results show that the constraint method mainly affects the range of contact imprinting on the tooth surface, and the original constraint method reaches the small end of the tooth surface when the original constraint method loads the contact imprint at the maximum load. However, the loading contact imprinting of the constraint method still has 3~4mm near the small end when the load is maximum, which is in good agreement with the experimental results.
【作者单位】：清华大学机械工程学院汽车工程系汽车安全与节能国家重点实验室;
【基金】：校企合作项目(20142000237) 国家重点实验室重点项目(ZZ2013-014)
【分类号】：TG61

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