Pub Date : 2023-12-18DOI: 10.1134/s1052618823060031
A. Yu. Albagachiev, A. Tokhmetova
Abstract
Comparative studies of the numerical method of determining the temperature of an alloyed lubricating layer and the friction moment with experimental data are presented. On the basis of the sweep method, we solved a system of equations including the modified Reynolds differential equation, the equilibrium equation, the energy equation, the friction moment equation, and the viscosity dependence on the pressure and the temperature. From comparison of the numerical data with the experiments, we show that the difference was within 13%.
{"title":"Simulation of Sliding Friction with Lubrication in the Hydrodynamic Friction Regime","authors":"A. Yu. Albagachiev, A. Tokhmetova","doi":"10.1134/s1052618823060031","DOIUrl":"https://doi.org/10.1134/s1052618823060031","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Comparative studies of the numerical method of determining the temperature of an alloyed lubricating layer and the friction moment with experimental data are presented. On the basis of the sweep method, we solved a system of equations including the modified Reynolds differential equation, the equilibrium equation, the energy equation, the friction moment equation, and the viscosity dependence on the pressure and the temperature. From comparison of the numerical data with the experiments, we show that the difference was within 13%.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-18DOI: 10.1134/s1052618823050175
A. N. Zotov, A. P. Tokarev
Abstract
This article is devoted to the development of a dynamic vibration absorber as a system in which an air spring moves between guides of a given shape perpendicular to their axis of symmetry. The shape of the guides is determined from the condition that the characteristic of the dynamic absorber is linear, which is equivalent to a spring with a given stiffness. The main disadvantage of most modern dynamic absorbers is that they are effective when operating only at a certain frequency of the driving force acting on a protected object. With a small change in this frequency, the amplitude of the protected object can increase many times over. This article proves that, by changing the designed pressure in the air spring of the proposed absorber, it is possible to get a given stiffness, at which it is effective at different frequencies of the driving force.
{"title":"A Dynamic Vibration Absorber with Adjustable Stiffness","authors":"A. N. Zotov, A. P. Tokarev","doi":"10.1134/s1052618823050175","DOIUrl":"https://doi.org/10.1134/s1052618823050175","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This article is devoted to the development of a dynamic vibration absorber as a system in which an air spring moves between guides of a given shape perpendicular to their axis of symmetry. The shape of the guides is determined from the condition that the characteristic of the dynamic absorber is linear, which is equivalent to a spring with a given stiffness. The main disadvantage of most modern dynamic absorbers is that they are effective when operating only at a certain frequency of the driving force acting on a protected object. With a small change in this frequency, the amplitude of the protected object can increase many times over. This article proves that, by changing the designed pressure in the air spring of the proposed absorber, it is possible to get a given stiffness, at which it is effective at different frequencies of the driving force.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138717592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-18DOI: 10.1134/s105261882306016x
I. S. Splavskiy
Abstract
Effect of cavitation phenomenon on changes in pressure and flow rate of water in a chamber is studied. The contribution of the gas saturation of liquid to changes in the hydrodynamic characteristics of a model cavitation flow are analyzed.
{"title":"Study of the Influence of Gas Saturation of Liquid on the Change of Pressure and Water Flow in a Chamber","authors":"I. S. Splavskiy","doi":"10.1134/s105261882306016x","DOIUrl":"https://doi.org/10.1134/s105261882306016x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Effect of cavitation phenomenon on changes in pressure and flow rate of water in a chamber is studied. The contribution of the gas saturation of liquid to changes in the hydrodynamic characteristics of a model cavitation flow are analyzed.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-18DOI: 10.1134/s1052618823060043
V. I. Aliev, I. I. Gasanov
Abstract
An increase in the efficiency of gland seals in compressor cylinders with cast iron rings pressed against the contact surface of the piston rod using a steel spring in reciprocating compressors used in offshore oil and gas-condensate fields for gas-lift oil production systems is considered. Studies of a gas engine reciprocating compressor working directly on the operating gas-lift system have shown that in order to increase the time of normal operation of gland seals, it is necessary to adjust the clearance using lubricant up to 0.1 mm. After increasing the spring stiffness, the serviceability and number of working hours of the gland seal increased twofold, from 850 to 1700 h.
{"title":"Improving the Sealing Efficiency of Compressor Cylinders of Gas Engine Compressors in the System of Gas-Lift Production of Offshore Fields","authors":"V. I. Aliev, I. I. Gasanov","doi":"10.1134/s1052618823060043","DOIUrl":"https://doi.org/10.1134/s1052618823060043","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An increase in the efficiency of gland seals in compressor cylinders with cast iron rings pressed against the contact surface of the piston rod using a steel spring in reciprocating compressors used in offshore oil and gas-condensate fields for gas-lift oil production systems is considered. Studies of a gas engine reciprocating compressor working directly on the operating gas-lift system have shown that in order to increase the time of normal operation of gland seals, it is necessary to adjust the clearance using lubricant up to 0.1 mm. After increasing the spring stiffness, the serviceability and number of working hours of the gland seal increased twofold, from 850 to 1700 h.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-18DOI: 10.1134/s1052618823060146
V. D. Samusenko, I. R. Tatur, O. A. Kal’yanova, S. S. Strel’nikova, I. A. Buyanovskii
Abstract
The protective properties and temperature resistance of sulfonate greases based on petroleum oil KS-19 have been assessed. Highly alkaline calcium sulfonates of Russian and foreign production are used as thickeners for such greases. Sulfonate greases have been shown to have good protective properties. It has been established that the ability of sulfonate greases to prevent corrosion depends on the protective properties of calcium sulfonate used as a thickener. Based on the totality of the indicators obtained, the grease based on the Russian-made K-314 thickener has the best properties; in temperature resistance, it is superior to the sample on the foreign thickener Lubrizol 86 GR, and in terms of protective properties, it is on the same level with it.
摘要 评估了基于石油 KS-19 的磺酸盐润滑脂的保护性能和耐温性能。俄罗斯和国外生产的高碱性钙磺酸盐被用作此类润滑脂的增稠剂。磺酸盐润滑脂具有良好的保护性能。已经证实，磺酸盐润滑脂的防腐蚀能力取决于用作稠化剂的磺酸钙的保护特性。根据所获得的全部指标，基于俄罗斯制造的 K-314 增稠剂的润滑脂具有最佳性能；在耐温性方面，它优于基于外国增稠剂 Lubrizol 86 GR 的样本，而在保护性能方面，它与它处于同一水平。
{"title":"Protective and Tribological Properties of Sulfonate Greases","authors":"V. D. Samusenko, I. R. Tatur, O. A. Kal’yanova, S. S. Strel’nikova, I. A. Buyanovskii","doi":"10.1134/s1052618823060146","DOIUrl":"https://doi.org/10.1134/s1052618823060146","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The protective properties and temperature resistance of sulfonate greases based on petroleum oil KS-19 have been assessed. Highly alkaline calcium sulfonates of Russian and foreign production are used as thickeners for such greases. Sulfonate greases have been shown to have good protective properties. It has been established that the ability of sulfonate greases to prevent corrosion depends on the protective properties of calcium sulfonate used as a thickener. Based on the totality of the indicators obtained, the grease based on the Russian-made K-314 thickener has the best properties; in temperature resistance, it is superior to the sample on the foreign thickener Lubrizol 86 GR, and in terms of protective properties, it is on the same level with it.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-18DOI: 10.1134/s1052618823060122
A. M. Pokrovskii, Yu. G. Matvienko
Abstract
In this article, a new fracture criterion for a mixed-type crack (type I + type II) is proposed. It is based on the assumption that the maximum tangential stresses in the prefracture region are equal to the local strength of the material. In this case, the size of the prefracture area and the local strength are determined taking into account nonsingular Тхx and Тzz stresses included in the expansion of the Williams stress function. The use of Тхx and Тzz stresses in the calculations allows one to describe the two-dimensional local constraint of the deformation along the crack front in three-dimensional bodies. In addition to KI and KII, the expression for the effective stress intensity factor (SIF) includes the ratios of the Тхx and Тzz stresses to the yield strength. This makes it possible to take into account the constraint of deformations in the transverse and longitudinal directions of the crack front, respectively. An example of the implementation of the developed criterion in relation to the determination of the fracture load of a tensile-stressed plate with a through inclined crack is given. Dependences of the Тxx and Тzz stresses on the plate thickness are presented for various crack slopes and plate thicknesses. It is shown that an increase in the plate thickness and a decrease in the crack slope lead to a decrease in the fracture load.
{"title":"The Two-Parameter Fracture Criterion Taking into Account Two-Dimensional Deformation Constraints at the Front of a Mixed-Type Crack","authors":"A. M. Pokrovskii, Yu. G. Matvienko","doi":"10.1134/s1052618823060122","DOIUrl":"https://doi.org/10.1134/s1052618823060122","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this article, a new fracture criterion for a mixed-type crack (type I + type II) is proposed. It is based on the assumption that the maximum tangential stresses in the prefracture region are equal to the local strength of the material. In this case, the size of the prefracture area and the local strength are determined taking into account nonsingular <i>Т</i><sub><i>хx</i></sub> and <i>Т</i><sub><i>zz</i></sub> stresses included in the expansion of the Williams stress function. The use of <i>Т</i><sub><i>хx</i></sub> and <i>Т</i><sub><i>zz</i></sub> stresses in the calculations allows one to describe the two-dimensional local constraint of the deformation along the crack front in three-dimensional bodies. In addition to <i>K</i><sub>I</sub> and <i>K</i><sub>II</sub>, the expression for the effective stress intensity factor (SIF) includes the ratios of the <i>Т</i><sub><i>хx</i></sub> and <i>Т</i><sub><i>zz</i></sub> stresses to the yield strength. This makes it possible to take into account the constraint of deformations in the transverse and longitudinal directions of the crack front, respectively. An example of the implementation of the developed criterion in relation to the determination of the fracture load of a tensile-stressed plate with a through inclined crack is given. Dependences of the <i>Т</i><sub><i>xx</i></sub> and <i>Т</i><sub><i>zz</i></sub> stresses on the plate thickness are presented for various crack slopes and plate thicknesses. It is shown that an increase in the plate thickness and a decrease in the crack slope lead to a decrease in the fracture load.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138717559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/s1052618823070087
M. Erokhin, O. M. Melnikov, O. Leonov, N. Shkaruba
{"title":"Influence of Volumetric Modification on the Physical and Mechanical Properties of Rubber Reinforced Cuffs","authors":"M. Erokhin, O. M. Melnikov, O. Leonov, N. Shkaruba","doi":"10.1134/s1052618823070087","DOIUrl":"https://doi.org/10.1134/s1052618823070087","url":null,"abstract":"","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139193662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/s1052618823070129
D. U. Khasyanova
{"title":"Computational and Experimental Technique for Constructing a Diagram for Thermomechanical Joints of Rings in a Plane Stress–Strain State","authors":"D. U. Khasyanova","doi":"10.1134/s1052618823070129","DOIUrl":"https://doi.org/10.1134/s1052618823070129","url":null,"abstract":"","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139196092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/s1052618823070038
D. I. Alekseev, P. V. Markov
{"title":"Validation of the Numerical Method for Solving the Flow Mixing Problem in the Annular Gap of a Water–Water Energetic Reactor","authors":"D. I. Alekseev, P. V. Markov","doi":"10.1134/s1052618823070038","DOIUrl":"https://doi.org/10.1134/s1052618823070038","url":null,"abstract":"","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/s1052618823070142
A. S. Krasko, A. A. Bryukhanov
{"title":"Automation of Structural and Parametric Optimization of Technological Complexes of Mechanical Assembly Production","authors":"A. S. Krasko, A. A. Bryukhanov","doi":"10.1134/s1052618823070142","DOIUrl":"https://doi.org/10.1134/s1052618823070142","url":null,"abstract":"","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139195532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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