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首页> 外文期刊>Mechanism and Machine Theory: Dynamics of Machine Systems Gears and Power Trandmissions Robots and Manipulator Systems Computer-Aided Design Methods >Diaphragm stress analysis and fatigue strength evaluation of the flex-spline, a very thin-walled spur gear used in the strain wave gearing
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Diaphragm stress analysis and fatigue strength evaluation of the flex-spline, a very thin-walled spur gear used in the strain wave gearing

机译：柔性花键的横隔板应力分析和疲劳强度评估，该花键是用于应变波齿轮的极薄壁正齿轮

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This paper deals with diaphragm stress analysis and fatigue strength calculation problems of the flex-spline, a thin-walled spur gear used in the strain wave gearing (SWG). Firstly, a mechanics model and theoretical method used for contact analysis of SWG are presented in this paper. Then finite element method (FEM) software is self-developed through very long time efforts in order to realize the contact analysis and stress calculations of SWG. With the developed FEM software, bending and shear stresses of the diaphragm of the flex-spline are analyzed successfully. Secondly, in order to confirm the FEM software, an experimental method and device are presented in this paper. A three-directional, strain gauge is stuck on a straight surface of the tapered diaphragm of the flex-spline next to the corner of the diaphragm with the boss. Diaphragm strains are measured under the conditions of zero and 110 Nm torques respectively and the measured stresses are compared with the calculated ones with the developed FEM software under the same conditions. It is found that the two results are in agreement with each other well. This means that the presented mechanics model and theoretical method are correct and effective. Finally, a method used to evaluate fatigue failure strength of the diaphragm is suggested based on the findings in this paper. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文讨论了挠性花键的应力分析和疲劳强度计算问题，该花键是一种用于应变波齿轮（SWG）的薄壁正齿轮。首先，提出了用于SWG接触分析的力学模型和理论方法。然后，通过很长时间的努力，自行开发了有限元方法软件，以实现SWG的接触分析和应力计算。借助开发的FEM软件，成功分析了柔性花键膜片的弯曲应力和剪切应力。其次，为验证有限元软件，提出了一种实验方法和装置。将三向应变仪粘贴在柔性花键锥形隔膜的笔直表面上，紧贴隔膜并与凸台相连。分别在零扭矩和110 Nm扭矩的条件下测量膜片应变，并在相同条件下使用开发的FEM软件将测得的应力与计算出的应力进行比较。发现这两个结果彼此吻合良好。这意味着所提出的力学模型和理论方法是正确有效的。最后，根据本文的发现，提出了一种评估膜片疲劳破坏强度的方法。 （C）2016 Elsevier Ltd.保留所有权利。

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