| 王志远,邢志国,王海斗,李国禄,刘珂璟,邢壮.重载齿轮弯曲疲劳寿命测试方法研究现状[J].材料导报,2018,32(17):3051-3059 |
| 重载齿轮弯曲疲劳寿命测试方法研究现状 |
| Research Status of Test Method for Bending Fatigue Life of Heavy Duty Gear |
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| DOI：10.11896/j.issn.1005-023X.2018.17.018 |
| 中文关键词: 重载齿轮 弯曲疲劳寿命 弯曲疲劳性能 测试方法 |
| 英文关键词: heavy-duty gear, bending fatigue life, bending fatigue performance, test method |
| 基金项目:国家自然科学基金(51775554；51535011)；国防973计划(61328304) |
| 作者 | 单位 | E-mail | | 王志远 | 河北工业大学材料科学与工程学院,天津 300130
陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072 | reincarnational@163.com,wanghaidou@aliyun.com,xingzg2011@163.com | | 邢志国 | 陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072 | reincarnational@163.com,wanghaidou@aliyun.com,xingzg2011@163.com | | 王海斗 | 陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072 | reincarnational@163.com,wanghaidou@aliyun.com,xingzg2011@163.com | | 李国禄 | 河北工业大学材料科学与工程学院,天津 300130 | | | 刘珂璟 | 陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072 | | | 邢壮 | 陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072 | |
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| 摘要点击次数: 2797 |
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| 中文摘要: |
| 重载齿轮是大型机械装置(推土机、挖掘机、装甲车等)传动系统的核心部件,它的主要功能是按照规定的转速比传递运动和转矩。随着科学技术的发展和军事装备的更新换代,重载齿轮的研究除了在材料性能、齿形设计、承载能力等方面取得了新成就外,另一个突出的进步就是在齿轮性能测试技术方面获得了很多成果,使得一些过去难以定量研究的问题(如齿轮的疲劳强度、齿轮传动品质等)都有了比较实用的测量手段。而在重载齿轮疲劳性能研究中,相对于接触疲劳产生的齿面点蚀、胶合、磨损等微小破坏而引起齿轮传动效率降低,啮合不到位等现象,弯曲疲劳则会直接导致齿根产生裂纹甚至形成断齿现象,造成重大事故。因此,准确测试重载齿轮的弯曲疲劳寿命,分析弯曲疲劳性能,进而优化齿轮设计,提升齿轮性能,对监测因弯曲疲劳失效所引起设备故障以及避免服役过程中发生重大事故具有重要意义。 重载齿轮弯曲疲劳寿命受多方面因素的影响,其中包括材料性能、加工尺寸、制备工艺以及测试手段等,因此对其弯曲疲劳寿命的定量测试一直是各国研究人员关注的热点话题。关于重载齿轮弯曲疲劳寿命的研究可以归纳为以下三方面:弯曲疲劳原理探究方面已发展到声发射信号检测、光学图像分形理论计算、计算机有限元数学模拟等多方面的实际应用；性能检测实验已有单齿/双齿脉冲加载、动态啮合式加载等多种试验方法；数据处理方面已发展出升降法、成组法、雨流法以及多种S-N曲线拟合的数据处理手段。这些分析方法以及测试手段的应用可以大大节省实验成本、提高分析效率、减少试验误差,进而提高重载齿轮弯曲疲劳寿命检测的准确性。 本文从重载齿轮弯曲疲劳寿命的测试原理、试验方法以及测试数据处理三方面出发,根据国内外研究现状,对重载齿轮的弯曲疲劳性能进行机理性与实验性的探究,为测试重载齿轮的弯曲疲劳寿命提供有效的理论依据、具体的测试方法以及准确的数据处理手段。 |
| 英文摘要: |
| Heavy-duty gears are the heart of the transmission system of a large mechanical system (bulldozers, excavators, armored vehicles, etc.), their main function is to transfer motion and torque according to the specified rotational speed ratio. With the development of science and technology and the increasingly advanced of military equipment, heavy-duty gears not only have made new achievements in materials performance, gear profile design and bearing capacity, but also gain outstanding improvement in testing technology of gear performance. Issues including the fatigue strength of gears, the quality of gear transmission that were different to study quantitatively in the past can already be measured by practical means. In the study of fatigue performance of heavy-duty gears, tooth gear pitting corrosion, gluing, abrasion and other minor damage caused by contact fatigue will deteriorate the gear transmission efficiency, lead to the slight dislocation of the meshing and so forth. Bending fatigue will directly induce to tooth root cracks and even the tooth break, which lead to serious accidents. Therefore, it is of great significance to accurately test the bending fatigue life of heavy-duty gears, analyze the flexural fatigue performance, optimize the gear design and improve the gear performance in order to monitor the equipment failure caused by the failure of bending fatigue and avoid major accidents during service. The bending fatigue life of heavy-duty gears is affected by many factors, including material properties, processing dimensions, preparation techniques and test methods, therefore the quantitative measurement of bending fatigue life has always been a hot topic among researchers worldwide. The research on the bending fatigue life of heavy-duty gears can be summarized into the following three aspects. Firstly, the theory of bending fatigue has been developed to the practical application of acoustic emission signal detection, optical image fractal theory calculation and computer finite element mathematical simulation. Secondly, the performance testing experiments including single tooth/bidentate pulse loading, dynamic meshing loading and other test methods have been developed. Thirdly, data processing methods like up-down method, group method, rain flow method and a variety of S-N curve fitting and so forth are emerged. The application of these analysis methods and test methods can greatly cut the experimental cost, raise the analysis efficiency and reduce the experimental error, so as to improve the accuracy of bending fatigue life testing of heavy-duty gears. According to the research status at home and abroad, the bending fatigue performance of heavy duty gears is explored mechanically and experimentally in view of the principle of bending fatigue test of heavy-duty gears, the testing methods and the bending fatigue data processing. The article is expected to provide the theoretical basis, specific test methods and data processing means for calculating the bending fatigue strength of heavy duty gear and predicting bending fatigue life. |
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