Industrial Lubrication and Tribology最新文献_第3页

Effects of differently shaped textures on the tribological properties of static and dynamic pressure thrust bearings and multiobjective optimization 不同形状纹理对静态和动态压力推力轴承摩擦学特性的影响及多目标优化

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-25 DOI: 10.1108/ilt-03-2024-0104

Xiaodong Yu, Guangqiang Shi, Xinyi Yang

{"title":"Effects of differently shaped textures on the tribological properties of static and dynamic pressure thrust bearings and multiobjective optimization","authors":"Xiaodong Yu, Guangqiang Shi, Xinyi Yang","doi":"10.1108/ilt-03-2024-0104","DOIUrl":"https://doi.org/10.1108/ilt-03-2024-0104","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this study is to evaluate three types of textures designed to enhance the tribological performance of static and dynamic pressure thrust bearings.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>To explore the effects of different types of textures on tribological performance, the Reynolds equation is modified using lubrication theory and computational fluid dynamics methods while considering the influence of cavitation and turbulence on the physical field. In addition, the tribological performance is optimized through an improved selection algorithm based on Pareto envelope (PESA).</p>\u0000<h3>Findings</h3>\u0000<p>The results indicate that textured thrust bearings exhibit superior tribological performance compared to untextured ones. The circular texture outperforms other textures in terms of load-bearing and friction performance, with improvements of approximately 28.8% and 18.9%, respectively. In addition, the triangular texture exhibits the most significant temperature improvement, with a reduction of approximately 1.93%.</p>\u0000<h3>Originality/value</h3>\u0000<p>The study proposes three types of textures and evaluates the friction performance of thrust bearings by modifying the Reynolds equation. In addition, the optimal texture design is determined using an improved selection algorithm based on PESA.</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"325 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the lubrication performance of the pitcher plant–like textured surface with various parameters 不同参数下投手植物纹理表面的润滑性能研究

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-23 DOI: 10.1108/ilt-04-2024-0119

Dongya Zhang, Yanping Gao, Pengju Wu, Yanchao Zhang, Liping Wang

{"title":"Study on the lubrication performance of the pitcher plant–like textured surface with various parameters","authors":"Dongya Zhang, Yanping Gao, Pengju Wu, Yanchao Zhang, Liping Wang","doi":"10.1108/ilt-04-2024-0119","DOIUrl":"https://doi.org/10.1108/ilt-04-2024-0119","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>This paper aims to enhance lubrication performance of the pitcher plant–like textured surface with various parameters.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>A pitcher plant–like structure surface is fabricated on the copper alloy, and the lubrication performance of the pitcher plant–like structure with various parameters is evaluated. In addition, the pressure distribution and oil film load capacity of the pitcher plant–like surface are simulated based on Navier–Stokes equations.</p>\u0000<h3>Findings</h3>\u0000<p>When the direction of motion aligns with the pitcher plant–like structure, the friction coefficient remains lower than that of the nontextured surface, and it exhibits a decreasing trend with the increasing of the texture width and spacing distance; the lowest friction coefficient (0.04) is achieved with <em>B</em> = 0.3 mm, <em>L</em> = 1.0 mm and <em>θ</em> = 45°, marking a 75% reduction compared to the nontextured surface. Simulation results demonstrate that with the increase in texture width and spacing distance, the oil film load-bearing capacity demonstrates an increasing trend.</p>\u0000<h3>Originality/value</h3>\u0000<p>Bionic pitcher plants are prepared on the copper alloy to improve the lubrication performance and wear resistance.</p>\u0000<h3>Peer review</h3>\u0000<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2024-0119/</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"268 10 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Friction and wear properties of textured surface for bearing steel with mango-shaped micro geometries 具有芒果形微几何形状的轴承钢纹理表面的摩擦和磨损特性

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-22 DOI: 10.1108/ilt-02-2024-0039

Qiang Xiao, Liu Yi-Cong, Yue-Peng Zhou, Zhi-Hong Wang, Sui-Xin Fan, Jun-Hu Meng, Junde Guo

{"title":"Friction and wear properties of textured surface for bearing steel with mango-shaped micro geometries","authors":"Qiang Xiao, Liu Yi-Cong, Yue-Peng Zhou, Zhi-Hong Wang, Sui-Xin Fan, Jun-Hu Meng, Junde Guo","doi":"10.1108/ilt-02-2024-0039","DOIUrl":"https://doi.org/10.1108/ilt-02-2024-0039","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>Given the current friction and wear challenges faced by automobile parts and bearings, this study aims to identify a novel texture for creating anti-friction and wear-resistant surfaces. This includes detailing the preparation process with the objective of mitigating friction and wear in working conditions.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>Femtosecond laser technology was used to create a mango-shaped texture on the surface of GCr15 bearing steel. The optimized processing technology of the texture surface was obtained through adjusting the laser scanning speed. The tribological behavior of the laser-textured surface was investigated using a reciprocating tribometer.</p>\u0000<h3>Findings</h3>\u0000<p>The friction coefficient of the mango-shaped texture surface is 25% lower than that of the conventional surface, this can be attributed to the reduced contact area between the friction ball and the micro-textured surface, leading to stress concentration at the extrusion edge and a larger stress distribution area on the contact part of the ball and disk compared to the conventional surface and the function of the micro-texture in storing wear chips during the sliding process, thereby reducing secondary wear.</p>\u0000<h3>Originality/value</h3>\u0000<p>The mango-shaped textured surface in this study demonstrates effective solutions for some of the friction and wear issues, offering significant benefits for equipment operation under light load conditions.</p>\u0000<h3>Peer review</h3>\u0000<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2024-0127/</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"48 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Significant sliding speed effect on the friction and wear behavior of UHMWPE matrix composites 滑动速度对超高分子量聚乙烯基复合材料摩擦和磨损行为的显著影响

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-16 DOI: 10.1108/ilt-03-2024-0069

Jinming Zhen, Congcong Zhen, Min Yuan, Yingliang Liu, Li Wang, Lin Yuan, Yuhan Sun, Xinyue Zhang, Xiaoshu Yang, Haojian Huang

{"title":"Significant sliding speed effect on the friction and wear behavior of UHMWPE matrix composites","authors":"Jinming Zhen, Congcong Zhen, Min Yuan, Yingliang Liu, Li Wang, Lin Yuan, Yuhan Sun, Xinyue Zhang, Xiaoshu Yang, Haojian Huang","doi":"10.1108/ilt-03-2024-0069","DOIUrl":"https://doi.org/10.1108/ilt-03-2024-0069","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>With the rapid development of the pipeline transportation and exploitation of mineral resources, it is urgent requirement for the high-performance polymer matrix composites with low friction and wear to meet the needs of solid material transportation. This paper aims to prepare high-performance ultrahigh molecular weight polyethylene (UHMWPE) matrix composites and investigate the effect of service condition on frictional behavior for composite.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>In this study, UHMWPE matrix composites with different content of MoS<sub>2</sub> were prepared and the tribological performance of the GCr15/composites friction pair in various sliding speeds (0.025–0.125 m/s) under dry friction conditions were studied by ball-on-disk tribology experiments.</p>\u0000<h3>Findings</h3>\u0000<p>Results show that the frictional behavior was shown to be sensitive to MoS2 concentration and sliding velocity. As the MoS2 content is 2 Wt.%, composites presented the best overall tribological performance. Besides, the friction coefficient fluctuates around 0.21 from 0.025 to 0.125 m/s sliding speed, while the wear rate increases gradually. Scanning electron microscopy images, energy-dispersive spectroscopy and Raman Spectrum analysis present that the main wear mechanisms were abrasive and fatigue wear.</p>\u0000<h3>Originality/value</h3>\u0000<p>The knowledge obtained herein will facilitate the design of UHMWPE matrix composites with promising self-lubrication performances which used in slag transport engineering field.</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"78 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on milling surface quality of superalloy GH4145 超级合金 GH4145 铣削表面质量研究

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-16 DOI: 10.1108/ilt-03-2024-0080

Jinfu Shi, Qi Gao

{"title":"Study on milling surface quality of superalloy GH4145","authors":"Jinfu Shi, Qi Gao","doi":"10.1108/ilt-03-2024-0080","DOIUrl":"https://doi.org/10.1108/ilt-03-2024-0080","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>This study aims to reveal the influence of milling process parameters on the surface roughness and morphology of superalloy GH4145.The groove milling mechanism and surface quality influence factors of superalloy GH4145 were studied experimentally.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>This paper provides investigations on three-dimensional finite element model (FEM) and simulation of milling process for GH4145.The milling experiment uses Taguchi L16 experimental design and single factor experimental design. The surface morphology of the workpiece was observed by scanning electron microscopy, and the influence mechanism of milling parameters on surface quality is expounded.</p>\u0000<h3>Findings</h3>\u0000<p>The results show that the cutting force increases by 133% with the increase in milling depth. The measured minimum surface roughness is 0.035 µm. With the change in milling depth, the surface roughness increases by 249%. With the change in cutting speed, the surface roughness increased by 54.8%. As the feed rate increases, the surface roughness increases by a maximum of 91.1%. The milling experiment verifies that the error between the predicted surface roughness and the actual value is less than 8%.</p>\u0000<h3>Originality/value</h3>\u0000<p>The milling experiment uses a Taguchi L16 experimental design and a single-factor experimental design. Mathematical models can be used in research as a contribution to current research. In addition, the milling cutter can be changed to further test this experiment. Reveal the influence of milling process parameters on the surface roughness and morphology of superalloy GH4145.</p>\u0000<h3>Peer review</h3>\u0000<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-03-2024-0080/</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"11 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of friction characteristics on electromagnetic impact deformation mechanism of 2A10 aluminum alloy bars 摩擦特性对 2A10 铝合金棒材电磁冲击变形机理的影响

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-10 DOI: 10.1108/ilt-05-2024-0154

Xu Zhang, Kangjie Tang, Yingyu Wang, Dongying Dong

{"title":"The effect of friction characteristics on electromagnetic impact deformation mechanism of 2A10 aluminum alloy bars","authors":"Xu Zhang, Kangjie Tang, Yingyu Wang, Dongying Dong","doi":"10.1108/ilt-05-2024-0154","DOIUrl":"https://doi.org/10.1108/ilt-05-2024-0154","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose objective of this study is to identify the friction coefficient and friction effect in electromagnetic upsetting (EMU) high-speed forming process.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>Based on numerical simulation and upsetting experiment of 2A10 aluminum alloy bar, the friction coefficient between contact surfaces is obtained by combining the fitting displacement distribution function and the electromagnetic-mechanical coupling numerical model, and the influence of friction effect is analyzed.</p>\u0000<h3>Findings</h3>\u0000<p>The maximum impact velocity and acceleration during EMU are 13.9 m/s and −3.3 × 106 m/s<sup>2</sup>, respectively, and the maximum strain rate is 7700 s<sup>−1</sup>. The functional distribution relationship between friction coefficient combination (FS, FD) and characteristic parameters [upper diameter (D1) and middle diameter (D2)] is established. The values of FS and FD are 0.1402 and 0.0931, respectively, and the maximum relative error is 2.39%. By analyzing the distribution of equivalent stress and strain, it is found that plastic deformation has obvious zoning characteristics and there is serious failure concentration in the strong shear zone.</p>\u0000<h3>Originality/value</h3>\u0000<p>Friction coefficient significantly affects stress or strain distributions in material forming process, but it is difficult to obtain friction coefficients through experimental tests in the high-speed forming process. In this paper, a multi-field coupling numerical model is proposed to determine friction coefficients and applied to the electromagnetic impact loading process (a high-speed forming process).</p>\u0000<h3>Peer review</h3>\u0000<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0154/</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"75 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings 复合纹理粗糙表面对圆柱滚子轴承润滑性能的影响

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-09 DOI: 10.1108/ilt-02-2024-0050

Linfeng Deng, Jie Su, Zeyuan Jin

{"title":"Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings","authors":"Linfeng Deng, Jie Su, Zeyuan Jin","doi":"10.1108/ilt-02-2024-0050","DOIUrl":"https://doi.org/10.1108/ilt-02-2024-0050","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this paper is to study the impact of different types of textures on the friction lubrication performance of cylindrical roller bearings.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>In the present study, the composite texture hydrodynamic lubrication model that takes into account the effects of surface roughness is established, and the Reynolds equation for the oil film is numerically solved using the finite difference method. The study investigates the oil film carrying capacity and maximum pressure of bearings under two different arrangements of four composite textures and conducts a comparative analysis of the oil film characteristics under various texture parameters and surface roughness levels.</p>\u0000<h3>Findings</h3>\u0000<p>When the roughness of the inner texture surface and the contact surface are equal, the bearing capacity of the composite texture is intermediate between the two textures. The impact trend of surface roughness on fluid dynamic pressure effects varies with the type of composite texture; the internal roughness of the texture affects the micro-hydrodynamic pressure action. Composite textures with different depths exhibit improved bearing capacities; elliptical cylindrical parallel and elliptical hemispherical parallel textures perform better when their area densities are similar, while other types of composite textures show enhanced bearing performance as the ratio of their area densities increases.</p>\u0000<h3>Originality/value</h3>\u0000<p>This paper contributes to the theoretical investigations and analyses on designing the textured rolling bearings with high lubrication performance.</p>\u0000<h3>Peer review</h3>\u0000<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0050</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"60 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear dynamic analysis of water-lubricated textured journal bearings with cavitation effect 具有气蚀效应的水润滑纹理轴颈轴承的非线性动态分析

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-08 DOI: 10.1108/ilt-11-2023-0348

Xiuwei Li, XingYang Li, Guokun Zhang, Yu Wang, Qinglei Liu, Qiang Li

{"title":"Nonlinear dynamic analysis of water-lubricated textured journal bearings with cavitation effect","authors":"Xiuwei Li, XingYang Li, Guokun Zhang, Yu Wang, Qinglei Liu, Qiang Li","doi":"10.1108/ilt-11-2023-0348","DOIUrl":"https://doi.org/10.1108/ilt-11-2023-0348","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this paper is to investigate the effects of different surface structures, dimensional parameters and cavitation models on the lubrication characteristics of water-lubricated journal bearings.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>In this paper, the coupling iteration method of ANSYS and MATLAB is established to calculate the journal orbits of water-lubricated bearing, and the differences between the journal orbits of the smoothed and the textured water-lubricated bearings are compared and analyzed, and the effects of different bearing materials, L/D ratios and clearance ratios on the lubrication performance of water-lubricated bearings are investigated. The effects of different cavitation models on the static equilibrium position and whirling trajectory of water-lubricated bearings are compared.</p>\u0000<h3>Findings</h3>\u0000<p>The results show that when the surface texture is distributed in the upper bearing or the bearing elastic modulus decreases, the bearing stability increases. Considering shear cavitation and noncondensing gas, the rotor journal orbits amplitude decreases at high speed with low clearance ratio. A water film test rig for water-lubricated bearings is built to measure the full-circle water film pressure of water-lubricated journal bearings, and the experimental results are compared with the simulation results, which are in good agreement.</p>\u0000<h3>Originality/value</h3>\u0000<p>The findings provide a theoretical basis for optimizing the structure of water-lubricated bearings.</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"26 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the dynamic characteristics for high-speed mechanical seal considering turbulent cavitating flow and inertia effect 考虑湍流空化流和惯性效应的高速机械密封动态特性研究

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-08 DOI: 10.1108/ilt-05-2024-0174

Yunlei Wang, Zhishuang Hao, Jiuhui Wu

引用次数: 0

Dynamic and stability analysis of crescent geometry-possessing textured journal bearing using nanolubricant 使用纳米润滑剂的新月形几何纹理轴颈轴承的动态和稳定性分析

IF 1.6 4区工程技术

Industrial Lubrication and Tribology Pub Date : 2024-07-02 DOI: 10.1108/ilt-03-2024-0089

Deepak Byotra, Sanjay Sharma

{"title":"Dynamic and stability analysis of crescent geometry-possessing textured journal bearing using nanolubricant","authors":"Deepak Byotra, Sanjay Sharma","doi":"10.1108/ilt-03-2024-0089","DOIUrl":"https://doi.org/10.1108/ilt-03-2024-0089","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>This study aims to find the dynamic performance parameters of the journal bearing with micro geometries patterning the arc (crescent) shape textures provided in three specific regions of the journal bearing: the full, the second half and the increasing pressure region. The dynamic behavior of textured journal bearings has been analyzed by computing dynamic parameters and linear and non-linear trajectories.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>The lubricant flows between the bearing and journal surface are governed by Reynold’s equation, which has been solved by finite the element method. The dynamic performance parameters such as stiffness, damping, threshold speed, critical mass and whirl frequency ratio are examined under various operating conditions by considering various ranges of eccentricity ratios and texture depths. Linear and non-linear equations of motion have been solved with Ranga–Kutta method to get journal motion trajectories. Also, the impact of adding aluminum oxide and copper oxide nanoparticles to the base lubricant in combination with arc-shaped textures is analyzed to further see any enhancement in the performance parameters.</p>\u0000<h3>Findings</h3>\u0000<p>The findings demonstrated that direct stiffness and damping parameters increased to their maximum level with six textures in the pressure-increasing region when compared with the untextured surface. Also, nanoparticle additives showed improvements above the highest value attained with no inclusion of additives in the same region or quantity of textures.</p>\u0000<h3>Originality/value</h3>\u0000<p>Engineers may design bearings with improved stability and overall performance if they understand how texture form impacts dynamic properties.</p>","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"32 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0