The PVT limit for gear scuffing assessment

IF 5.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Wear Pub Date : 2024-09-03 DOI:10.1016/j.wear.2024.205557
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引用次数: 0

Abstract

The growing interest in gear scuffing research primarily stems from the escalating standards and operation requirements in aero-engines and electric vehicles, particularly under high-temperature, high-speed, and heavy-load conditions. Existing calculation standards for gear scuffing often deviate when evaluating the load-carrying capacity under different rotational speeds or oil temperatures, thus undermining the reliability of gear scuffing assessments. To address this, thirty-five sets of gear scuffing experiments were conducted with different materials, manufacturing processes, and lubrication conditions. A new evaluation method based on the pressure-velocity-temperature (PVT) limit was proposed for assessing gear scuffing resistance. Using a non-dominated genetic algorithm, exponent coefficients for the contact pressure P, sliding velocity V, and lubricant temperature T were determined. The results demonstrated that the proposed PVT limit effectively evaluates gear scuffing resistance across various conditions. The PVT limits across different operating scenarios, under the same material, manufacturing process, and lubrication conditions, showed a maximum deviation of 6.6%. Conversely, the scuffing temperatures calculated using ISO 6336-20-2017 and AGMA 925-A03-2003 standards deviate from experimental results by up to 36.7% and 32.8%, respectively. Further application of the PVT limit to an aero-engine accessory gearbox confirmed the practical applicability of the proposed method.

齿轮擦伤评估的 PVT 限值
人们对齿轮磨损研究的兴趣与日俱增,主要原因是航空发动机和电动汽车的标准和运行要求不断提高,尤其是在高温、高速和重载条件下。现有的齿轮磨损计算标准在评估不同转速或油温条件下的承载能力时往往存在偏差,从而削弱了齿轮磨损评估的可靠性。为了解决这个问题,我们针对不同的材料、制造工艺和润滑条件进行了 35 组齿轮摩擦实验。提出了一种基于压力-速度-温度(PVT)极限的新评估方法,用于评估齿轮的抗擦伤性。利用非支配遗传算法,确定了接触压力 P、滑动速度 V 和润滑剂温度 T 的指数系数。结果表明,所提出的 PVT 限值能有效评估齿轮在各种条件下的抗擦伤性。在相同的材料、制造工艺和润滑条件下,不同运行情况下的 PVT 极限值最大偏差为 6.6%。相反,使用 ISO 6336-20-2017 和 AGMA 925-A03-2003 标准计算的摩擦温度与实验结果的偏差分别高达 36.7% 和 32.8%。将 PVT 限制进一步应用于航空发动机附件齿轮箱,证实了所建议方法的实际适用性。
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来源期刊
Wear
Wear 工程技术-材料科学:综合
CiteScore
8.80
自引率
8.00%
发文量
280
审稿时长
47 days
期刊介绍: Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.
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