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Effects of modification on the strength–weight ratio of standard bevel gears
Mechanics Based Design of Structures and Machines ( IF 3.9 ) Pub Date : 2021-08-25 , DOI: 10.1080/15397734.2021.1960562
Gürkan İrsel 1
Affiliation  

Abstract

Because of the current rapid technological progress, in addition to achieving increased speed and momentum in machine, transmitting more power in a low-noise, lightweight, safe, and economical manner and saving material in gears is crucial. For this purpose, modified bevel gears are common. Therefore, this study investigates bevel gear profile modifications focusing on strength and raw material saving. Herein, three modification designs (Modifications I–III) were modeled using CATIA software. Finite element analysis (FEA) and experimental tests were performed to investigate the effect of the proposed modifications on the gear’s strength. Design and analysis procedures of the modifications were presented. Prototypes of the modified gear pairs were fabricated and subjected to strength and wear tests using a dynamic test device. The fatigue life of each gear pair was determined using nCode software. Modification II reduced the gear root stress by 3.98% relative to the original gear pair. Modification III resulted in 37.30% material saving, accompanied by 6.74% increase in contact stress. No fatigue damage was detected in either modification gear pair. The FEA results were compatible with the analytical, i.e., KISSsoft simulation, and experimental results; furthermore, FEA was found to be advantageous in terms of time and test costs in gear modification. Based on the obtained results for the three modifications, the Modification II gear pair is recommended for mass production.



中文翻译:

改性对标准锥齿轮强重比的影响

摘要

由于当前技术进步迅速,除了提高机器的速度和动力外,以低噪音、轻量化、安全、经济的方式传递更多的动力以及节省齿轮材料至关重要。为此,改进的锥齿轮很常见。因此,本研究以强度和节省原材料为重点,研究了锥齿轮轮廓的修改。在此,使用 CATIA 软件对三种修改设计(修改 I-III)进行了建模。进行了有限元分析 (FEA) 和实验测试,以研究提议的修改对齿轮强度的影响。提出了修改的设计和分析程序。制造改进的齿轮副的原型并使用动态测试装置进行强度和磨损测试。使用 nCode 软件确定每个齿轮副的疲劳寿命。修改二相对于原齿轮副减少了3.98%的齿轮根部应力。修改 III 节省了 37.30% 的材料,同时接触应力增加了 6.74%。在任一修改齿轮副中均未检测到疲劳损坏。有限元分析结果与分析结果相兼容,即KISSsoft 模拟和实验结果;此外,FEA 被发现在齿轮修改的时间和测试成本方面具有优势。根据三个修改获得的结果,推荐使用修改二齿轮副进行批量生产。伴随着 6.74% 的接触应力增加。在任一修改齿轮副中均未检测到疲劳损坏。有限元分析结果与分析结果相兼容,即KISSsoft 模拟和实验结果;此外,FEA 被发现在齿轮修改的时间和测试成本方面具有优势。根据三个修改获得的结果,推荐使用修改二齿轮副进行批量生产。伴随着 6.74% 的接触应力增加。在任一修改齿轮副中均未检测到疲劳损坏。有限元分析结果与分析结果相兼容,即KISSsoft 模拟和实验结果;此外,FEA 被发现在齿轮修改的时间和测试成本方面具有优势。根据三个修改获得的结果,推荐使用修改二齿轮副进行批量生产。

更新日期:2021-08-25
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