Method for calculating the tooth root stress of plastic spur gears meshing with steel gears under consideration of deflection-induced load sharing
Method for calculating the tooth root stress of plastic spur gears meshing with steel gears under consideration of deflection-induced load sharing
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DOI：
10.1016/j.mechmachtheory.2017.01.015
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发表时间：
2017-05-01
影响因子：
5.2
通讯作者：
Stahl, Karsten
中科院分区：
文献类型：
--
作者：
Hasl, Christian;Liu, Hua;Stahl, Karsten
热塑性齿轮的工作特性，特别是弯曲强度，在很大程度上受到载荷下重合度显著增加的影响。根据现行的解析计算标准和准则，在计算齿根应力时忽略了这种影响。使用数值方法，如有限元法（FEM），可以考虑挠度，但与重新计算指南或标准（如ISO2736或ISO 6336）相比，在工程实践中使用复杂且广泛。在这项工作中，提出了一种方法来计算名义齿根应力的基础上现有的分析准则，考虑到实际的重合度。基于三个测试齿轮几何形状的例子，结果进行了比较，现有的指南，以及数值计算，表明所提出的方法与后者相关。(C)2017爱思唯尔有限公司版权所有
The operational behavior and, in particular, the bending strength of thermoplastic gears are substantially influenced by the significant increase in contact ratio under load. According to current analytic calculation standards and guidelines, this effect is neglected when tooth root stress is calculated. Using numerical methods, such as the finite element method (FEM), a consideration of deflections is possible but the usage is complex and extensive in engineering practice compared to recomputing guidelines or standards like VDI 2736 or ISO 6336. In this work, a method is presented for calculating the nominal tooth root stress based on existing analytic guidelines, taking the actual contact ratio into account. Based on the example of three test gear geometries, the results are compared to existing guidelines, as well as numerical computations, showing that the presented method correlates well with the latter. (C) 2017 Elsevier Ltd. All rights reserved.