Pub Date : 2023-08-01DOI: 10.1080/10402004.2023.2242420
S. M., Elayaperumal A., Sankaraiah M., S. H
Abstract The frictional coefficient of LCCS with MIL-PRF-23699 grade lubricant was high, which led to an increase in heat generation and temperature rise of the lubricant in aircraft parts such as the accessory gearbox and engine gearbox. To overcome this, the present study proposed the use of h-BN nanoparticles as an additive with MIL-PRF-23699 grade lubricant. To improve the stability and suspension of the h-BN nanoparticles in the NL, the NL was prepared with h-BN nanoparticles and various surfactants. The properties were evaluated for both BL and NL. The tribological experiments were carried out using a four-ball tester, a shear stability tester, and a Reichert tester. The h-BN NL resulted in a 16% reduction in WSD when compared with the BL. The LWI of h-BN NL was increased by 7.44% compared with BL. In the shear stability test, h-BN NL showed 93% better shear stability than the BL. The CoF was reduced by 13% with the h-BN NL in the Reichert test. The experimental results indicated that the h-BN nanoparticles with MIL-PRF-23699 grade lubricant had better tribological properties for aerospace applications.
{"title":"Enhancement in the Friction and Wear Resistance of Low Carbon Chromium Steel and Load Carrying Capability of MIL-PRF-23699 Grade Lubricant Using h-BN Nanoadditives for Aerospace Applications","authors":"S. M., Elayaperumal A., Sankaraiah M., S. H","doi":"10.1080/10402004.2023.2242420","DOIUrl":"https://doi.org/10.1080/10402004.2023.2242420","url":null,"abstract":"Abstract The frictional coefficient of LCCS with MIL-PRF-23699 grade lubricant was high, which led to an increase in heat generation and temperature rise of the lubricant in aircraft parts such as the accessory gearbox and engine gearbox. To overcome this, the present study proposed the use of h-BN nanoparticles as an additive with MIL-PRF-23699 grade lubricant. To improve the stability and suspension of the h-BN nanoparticles in the NL, the NL was prepared with h-BN nanoparticles and various surfactants. The properties were evaluated for both BL and NL. The tribological experiments were carried out using a four-ball tester, a shear stability tester, and a Reichert tester. The h-BN NL resulted in a 16% reduction in WSD when compared with the BL. The LWI of h-BN NL was increased by 7.44% compared with BL. In the shear stability test, h-BN NL showed 93% better shear stability than the BL. The CoF was reduced by 13% with the h-BN NL in the Reichert test. The experimental results indicated that the h-BN nanoparticles with MIL-PRF-23699 grade lubricant had better tribological properties for aerospace applications.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"882 - 894"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42433881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-01DOI: 10.1080/10402004.2023.2244017
Zhiqiang Wang, Jiangtao Cao, Xiaoguang Ren, Benyong Zhang, Rihong Ye
Abstract The advantageous physical and chemical properties of carbon-fiber-reinforced polyetheretherketone (CFRPEEK) make it a suitable friction pair for water hydraulic components. To explore the selection of friction pair materials, this paper investigated the tribological properties of CFRPEEK, stainless and carbon steel in water and high water-based fluids, and evaluated them using reciprocating friction and wear tester. After the test, the wear surface morphology of the contact surface was observed under an electron microscope. The results show that the degree of friction between specimens is dependent on the load and frequency. Meanwhile, both 316L and CFRPEEK have good tribological properties in both mediums. Microscope observation analysis showed that CFRPEEK surfaces easily absorb water to create a water film, thus improving its performance and reducing wear. Additionally, the friction between stainless and carbon steel in high water-base fluid will generate a lubricating film, the surface of which shows excellent tribological properties. The final conclusion was that the choice of material for plunger pair material depends on the medium, with 304-316L being more suitable for high water-based fluids, while CFRPEEK-316L is more suitable for water.
{"title":"Comparative Study of the Tribological Properties of CFRPEEK, Stainless and Carbon Steel in High Water-Based Fluid","authors":"Zhiqiang Wang, Jiangtao Cao, Xiaoguang Ren, Benyong Zhang, Rihong Ye","doi":"10.1080/10402004.2023.2244017","DOIUrl":"https://doi.org/10.1080/10402004.2023.2244017","url":null,"abstract":"Abstract The advantageous physical and chemical properties of carbon-fiber-reinforced polyetheretherketone (CFRPEEK) make it a suitable friction pair for water hydraulic components. To explore the selection of friction pair materials, this paper investigated the tribological properties of CFRPEEK, stainless and carbon steel in water and high water-based fluids, and evaluated them using reciprocating friction and wear tester. After the test, the wear surface morphology of the contact surface was observed under an electron microscope. The results show that the degree of friction between specimens is dependent on the load and frequency. Meanwhile, both 316L and CFRPEEK have good tribological properties in both mediums. Microscope observation analysis showed that CFRPEEK surfaces easily absorb water to create a water film, thus improving its performance and reducing wear. Additionally, the friction between stainless and carbon steel in high water-base fluid will generate a lubricating film, the surface of which shows excellent tribological properties. The final conclusion was that the choice of material for plunger pair material depends on the medium, with 304-316L being more suitable for high water-based fluids, while CFRPEEK-316L is more suitable for water.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"895 - 905"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45257649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-01DOI: 10.1080/10402004.2023.2240869
Y. E. karabacak, H. Baş
Abstract As technology progresses, lubricant additives are becoming more prevalent and expanding the application areas of modern tribology. This study aimed to investigate the tribological properties of recently used additive particles and their impact on worm gearbox power consumption. To achieve this, hazelnut oil was chosen as the base oil, and graphite, boric acid (BA), and hexagonal boron nitride (hBN) particles were added in certain proportions. The effect of each additive on the coefficient of friction and wear was investigated under different operating speeds and loads using a pin-on-disc tester. Optimal additive ratios for worm gearbox oils were utilized based on the previous studies, and oils using hazelnut oil as the base were prepared accordingly. The efficacy of the additives was evaluated using a worm gearbox test system.
{"title":"Assessing the Influence of Micro Lubricant Additives on Worm Gearbox Power Consumption: A Tribological Investigation Utilizing Hazelnut Oil-Based Lubricants","authors":"Y. E. karabacak, H. Baş","doi":"10.1080/10402004.2023.2240869","DOIUrl":"https://doi.org/10.1080/10402004.2023.2240869","url":null,"abstract":"Abstract As technology progresses, lubricant additives are becoming more prevalent and expanding the application areas of modern tribology. This study aimed to investigate the tribological properties of recently used additive particles and their impact on worm gearbox power consumption. To achieve this, hazelnut oil was chosen as the base oil, and graphite, boric acid (BA), and hexagonal boron nitride (hBN) particles were added in certain proportions. The effect of each additive on the coefficient of friction and wear was investigated under different operating speeds and loads using a pin-on-disc tester. Optimal additive ratios for worm gearbox oils were utilized based on the previous studies, and oils using hazelnut oil as the base were prepared accordingly. The efficacy of the additives was evaluated using a worm gearbox test system.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"869 - 881"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46975991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The poor matching performance of a carbon skateboard and contact wire leads to abnormal wear of a rigid pantograph–catenary system. However, an effective response strategy for reducing the frequency of abnormal wear of the arch network has not been achieved. In this article, the friction and wear properties of pure carbon and copper-impregnated carbon skateboards are used to investigate and compare the friction properties under different working conditions. The experimental results show that the contact resistance of the pure carbon skateboard/contact wire increases from 12 mΩ to 45 mΩ with increasing current and shows an overall low friction coefficient. The contact resistance of the copper-impregnated carbon skateboard/contact wire fluctuates in the range of 4 mΩ to 16 mΩ, with a relatively high friction coefficient. A high current density accelerates the electrical wear behavior and temperature increase of the interface of the pure carbon skateboard/contact wire. A matching strategy of carbon skateboard and contact wire is proposed by comparing the friction coefficient, contact resistance, and wear rate.
{"title":"Comparative Investigation Into the Current-Carrying Wear Properties of Two Kinds of Carbon Skateboard/Wire Contact Under Different Conditions","authors":"Xin-long Liu, Chuanjun Tu, Yanli Liu, Gaimei Ren, Yixing Chen, Jiao Tan, Xia Huang","doi":"10.1080/10402004.2023.2238946","DOIUrl":"https://doi.org/10.1080/10402004.2023.2238946","url":null,"abstract":"Abstract The poor matching performance of a carbon skateboard and contact wire leads to abnormal wear of a rigid pantograph–catenary system. However, an effective response strategy for reducing the frequency of abnormal wear of the arch network has not been achieved. In this article, the friction and wear properties of pure carbon and copper-impregnated carbon skateboards are used to investigate and compare the friction properties under different working conditions. The experimental results show that the contact resistance of the pure carbon skateboard/contact wire increases from 12 mΩ to 45 mΩ with increasing current and shows an overall low friction coefficient. The contact resistance of the copper-impregnated carbon skateboard/contact wire fluctuates in the range of 4 mΩ to 16 mΩ, with a relatively high friction coefficient. A high current density accelerates the electrical wear behavior and temperature increase of the interface of the pure carbon skateboard/contact wire. A matching strategy of carbon skateboard and contact wire is proposed by comparing the friction coefficient, contact resistance, and wear rate.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"832 - 844"},"PeriodicalIF":2.1,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48432245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-27DOI: 10.1080/10402004.2023.2240063
L. Houpert, C. Penny, J. Clarke
Abstract A comprehensive quasi-static and dynamic ball bearing model is described using many enhanced features, including novel calculations of the contact angle variations and ball–race sliding speeds in two directions, accounting for race curvature, pivoting effects and gyroscopic effects, appropriate lubricant rheology, and sliding forces (driving the balls against miscellaneous braking forces and moments such as, for example, the hydrodynamic rolling force). Ball–cage impact forces and cage-guiding ring forces are also considered, leading to a set of six dynamic differential equations to consider for each ball and three dynamic differential equations for the cage, where movement is assumed to be restricted to one plane. Quasi-static calculations can be undertaken by neglecting the cage and setting the accelerations of each degree of freedom of the ball to zero. New analytical or curve-fitted models are also provided using the mean values of sliding speed and viscosity to calculate sliding forces and moments, avoiding the use of contact slices with some useful relationships derived for calculating the rolling line locations, bearing torque, and dissipated bearing power. Several examples of calculated results are given and compared to available numerical or experimental results published in the literature. Finally, a new tool developed in-house is proposed for predicting many properties, particularly of interest at high speed, including the ball bearing torque, power loss, risk of smearing, and risk of cage failure.
{"title":"Bearing Models for Advanced Ball Bearing Simulation","authors":"L. Houpert, C. Penny, J. Clarke","doi":"10.1080/10402004.2023.2240063","DOIUrl":"https://doi.org/10.1080/10402004.2023.2240063","url":null,"abstract":"Abstract A comprehensive quasi-static and dynamic ball bearing model is described using many enhanced features, including novel calculations of the contact angle variations and ball–race sliding speeds in two directions, accounting for race curvature, pivoting effects and gyroscopic effects, appropriate lubricant rheology, and sliding forces (driving the balls against miscellaneous braking forces and moments such as, for example, the hydrodynamic rolling force). Ball–cage impact forces and cage-guiding ring forces are also considered, leading to a set of six dynamic differential equations to consider for each ball and three dynamic differential equations for the cage, where movement is assumed to be restricted to one plane. Quasi-static calculations can be undertaken by neglecting the cage and setting the accelerations of each degree of freedom of the ball to zero. New analytical or curve-fitted models are also provided using the mean values of sliding speed and viscosity to calculate sliding forces and moments, avoiding the use of contact slices with some useful relationships derived for calculating the rolling line locations, bearing torque, and dissipated bearing power. Several examples of calculated results are given and compared to available numerical or experimental results published in the literature. Finally, a new tool developed in-house is proposed for predicting many properties, particularly of interest at high speed, including the ball bearing torque, power loss, risk of smearing, and risk of cage failure.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"845 - 868"},"PeriodicalIF":2.1,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44393455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-20DOI: 10.1080/10402004.2023.2235395
F. de Cadier de Veauce, L. Darul, Y. Marchesse, T. Touret, C. Changenet, F. Ville, L. Amar, C. Fossier
Abstract This article presents an experimental study on load-independent power losses in oil-jet lubricated deep-groove ball bearings. These experiments were performed under different operating conditions. Rotational speed, lubricant temperature, oil flow rate, and rolling element bearings dimensions were varied to quantify their influence on power losses. A load-independent power losses model for rolling element bearings has been proposed in a companion article and was used here to simulate experiments. Model results and measurements are compared. A good agreement is found on the power losses in low-loaded deep-groove ball bearings.
{"title":"Power Losses of Oil-Jet Lubricated Ball Bearings With Limited Applied Load: Part 2—Experiments and Model Validation","authors":"F. de Cadier de Veauce, L. Darul, Y. Marchesse, T. Touret, C. Changenet, F. Ville, L. Amar, C. Fossier","doi":"10.1080/10402004.2023.2235395","DOIUrl":"https://doi.org/10.1080/10402004.2023.2235395","url":null,"abstract":"Abstract This article presents an experimental study on load-independent power losses in oil-jet lubricated deep-groove ball bearings. These experiments were performed under different operating conditions. Rotational speed, lubricant temperature, oil flow rate, and rolling element bearings dimensions were varied to quantify their influence on power losses. A load-independent power losses model for rolling element bearings has been proposed in a companion article and was used here to simulate experiments. Model results and measurements are compared. A good agreement is found on the power losses in low-loaded deep-groove ball bearings.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"822 - 831"},"PeriodicalIF":2.1,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46587526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-12DOI: 10.1080/10402004.2023.2234429
Xiaozhou Hu, Zhenyu Huang, Ao Wang
Abstract To study the flow field characteristics inside the rotating oil passage of a helicopter with variable speed transmission system, a rotating oil passage model consisting of a single inlet and multiple branch outlets is established, and computation fluid dynamics (CFD) simulation is performed. The influences of rotating speed and oil supply pressure on the distribution of lubricating oil, the flow rate of oil, and the distribution of velocity for the inlet and outlets are discussed. A test rig for studying the lubrication performance of a rotating oil passage is established, with which the oil flow rates of outlets under different conditions were obtained, and the effectiveness of the present simulation approach is validated.
{"title":"The Effect of Rotating Speed and Oil Supply Pressure of the Rotating Passage of the Transmission System for a Helicopter","authors":"Xiaozhou Hu, Zhenyu Huang, Ao Wang","doi":"10.1080/10402004.2023.2234429","DOIUrl":"https://doi.org/10.1080/10402004.2023.2234429","url":null,"abstract":"Abstract To study the flow field characteristics inside the rotating oil passage of a helicopter with variable speed transmission system, a rotating oil passage model consisting of a single inlet and multiple branch outlets is established, and computation fluid dynamics (CFD) simulation is performed. The influences of rotating speed and oil supply pressure on the distribution of lubricating oil, the flow rate of oil, and the distribution of velocity for the inlet and outlets are discussed. A test rig for studying the lubrication performance of a rotating oil passage is established, with which the oil flow rates of outlets under different conditions were obtained, and the effectiveness of the present simulation approach is validated.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"787 - 800"},"PeriodicalIF":2.1,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46536344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-12DOI: 10.1080/10402004.2023.2236168
J. Xue, Linan Ma, Xiaoguang Ma, Guang Feng, Zhubo Liu, Cunlong Zhou, Zheng-yi Jiang, D. Piliptsou, Jingwei Zhao
Abstract In this work, an experimental investigation on the lubrication performance of water-based nanolubricant with TiO2 as nanoadditives was performed. The nanolubricants show excellent dispersibility and stability within 5 days after preparation. Additionally, the results show that the concentration of TiO2 nanoparticles significantly affects the lubrication performance of the prepared nanolubricant during microrolling. The excessive nanoparticles lead to agglomeration at the contact area, while the limited nanoparticles can hardly work during rolling processes. Instead, for a nanolubricant with 3.0 wt% of TiO2 nanoparticles, the nanolubricant is able to feed abundant nanoparticles continuously to the rubbing zone with little agglomeration, improving the surface quality of copper foils during microrolling.
{"title":"An Experimental Investigation on the Lubrication Performance of Water-Based Nanolubricant With TiO2 as Nanoadditive","authors":"J. Xue, Linan Ma, Xiaoguang Ma, Guang Feng, Zhubo Liu, Cunlong Zhou, Zheng-yi Jiang, D. Piliptsou, Jingwei Zhao","doi":"10.1080/10402004.2023.2236168","DOIUrl":"https://doi.org/10.1080/10402004.2023.2236168","url":null,"abstract":"Abstract In this work, an experimental investigation on the lubrication performance of water-based nanolubricant with TiO2 as nanoadditives was performed. The nanolubricants show excellent dispersibility and stability within 5 days after preparation. Additionally, the results show that the concentration of TiO2 nanoparticles significantly affects the lubrication performance of the prepared nanolubricant during microrolling. The excessive nanoparticles lead to agglomeration at the contact area, while the limited nanoparticles can hardly work during rolling processes. Instead, for a nanolubricant with 3.0 wt% of TiO2 nanoparticles, the nanolubricant is able to feed abundant nanoparticles continuously to the rubbing zone with little agglomeration, improving the surface quality of copper foils during microrolling.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"943 - 952"},"PeriodicalIF":2.1,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47700436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-11DOI: 10.1080/10402004.2023.2235400
L. Darul, T. Touret, C. Changenet, F. Ville
Abstract This study presents a theoretical analysis to quantify power losses generated by an oil-jet lubricated deep groove ball bearing. Loaded rolling elements (RE) have been thoroughly studied in the past for the elastohydrodynamic lubricated (EHL) regime, while a well-known problem concerning rolling element bearing (REB) power losses is the estimation of dissipation sources in the case of limited or no applied load. The model presented in this article aims to solve this problem by describing the physics involved on the unloaded zone. Unloaded RE are considered in an isoviscous rigid (IVR) regime. The model is compared with global power loss models such as the Harris–Palmgren or SKF models. This work shows that unloaded RE can generate around 40% of the losses when the applied radial load is about 5% of the static capacity.
{"title":"Power Losses of Oil-Jet Lubricated Ball Bearings With Limited Applied Load: Part 1—Theoretical Analysis","authors":"L. Darul, T. Touret, C. Changenet, F. Ville","doi":"10.1080/10402004.2023.2235400","DOIUrl":"https://doi.org/10.1080/10402004.2023.2235400","url":null,"abstract":"Abstract This study presents a theoretical analysis to quantify power losses generated by an oil-jet lubricated deep groove ball bearing. Loaded rolling elements (RE) have been thoroughly studied in the past for the elastohydrodynamic lubricated (EHL) regime, while a well-known problem concerning rolling element bearing (REB) power losses is the estimation of dissipation sources in the case of limited or no applied load. The model presented in this article aims to solve this problem by describing the physics involved on the unloaded zone. Unloaded RE are considered in an isoviscous rigid (IVR) regime. The model is compared with global power loss models such as the Harris–Palmgren or SKF models. This work shows that unloaded RE can generate around 40% of the losses when the applied radial load is about 5% of the static capacity.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":"66 1","pages":"801 - 808"},"PeriodicalIF":2.1,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46603003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-06DOI: 10.1080/10402004.2023.2226476
Linlin Li, S. Wang
With the increasing speed of aviation spiral bevel gears, the load-independent windage power losses caused by hydrodynamic have increasingly more influence on gear transmission efficiency. Firstly, a test rig for the windage power loss of spiral bevel gear under oil-jet lubrication is established, and on this basis, a method for measuring windage torque is proposed. Next, the interactive effects of different injection lubrication parameters on the windage power loss were studied by orthogonal experiment, and the formula for calculating the windage loss was obtained by fitting the experimental data. Then, the fluid distribution, velocity field and pressure field around the gear were analysed by using a computational fluid dynamics (CFD) numerical model, and the mechanical and energy characteristics of the gear windage power loss were obtained. Finally, the dimensionless processing of the windage moment was carried out, and the variation of the dimensionless windage moment coefficient with the rotational Reynolds number is obtained. The comparison between the dimensionless windage moment coefficient of experimental data and simulation results shows that the CFD values are in good agreement with the measured data. This study provides experimental and methodological guidance for the calculation of windage power loss and windage reduction design of aviation gear pair under oil injection lubrication.
{"title":"Experimental Study and Numerical Analysis on Windage Power Loss Characteristics of Aviation Spiral Bevel Gear with Oil Injection Lubrication","authors":"Linlin Li, S. Wang","doi":"10.1080/10402004.2023.2226476","DOIUrl":"https://doi.org/10.1080/10402004.2023.2226476","url":null,"abstract":"With the increasing speed of aviation spiral bevel gears, the load-independent windage power losses caused by hydrodynamic have increasingly more influence on gear transmission efficiency. Firstly, a test rig for the windage power loss of spiral bevel gear under oil-jet lubrication is established, and on this basis, a method for measuring windage torque is proposed. Next, the interactive effects of different injection lubrication parameters on the windage power loss were studied by orthogonal experiment, and the formula for calculating the windage loss was obtained by fitting the experimental data. Then, the fluid distribution, velocity field and pressure field around the gear were analysed by using a computational fluid dynamics (CFD) numerical model, and the mechanical and energy characteristics of the gear windage power loss were obtained. Finally, the dimensionless processing of the windage moment was carried out, and the variation of the dimensionless windage moment coefficient with the rotational Reynolds number is obtained. The comparison between the dimensionless windage moment coefficient of experimental data and simulation results shows that the CFD values are in good agreement with the measured data. This study provides experimental and methodological guidance for the calculation of windage power loss and windage reduction design of aviation gear pair under oil injection lubrication.","PeriodicalId":23315,"journal":{"name":"Tribology Transactions","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44230894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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