Pub Date : 2023-12-28DOI: 10.1134/s1052618823080095
A. M. Keropyan, A. Yu. Albagachiev
Abstract
As a result of theoretical studies, it is established that the traction force of quarry locomotives is significantly affected by the temperature in the contact zone of the wheel–rail system, the contact zone microgeometry, the macrogeometry of the interacting surfaces, and the axial load. It is determined that, in order to ensure the strength criterion and taking into account the increased axial loads of quarry locomotives, it is necessary to limit the temperature in the contact zone of the wheel–rail system within 300°C by controlling the speed of the wheel slip on the rail. It is found that for the interacting surfaces it is necessary to ensure conditions peculiar to plastic-saturated contact for effective functioning of quarry rail transport.
{"title":"Degree of Impact of Dominant Factors of the Working Surfaces of the Wheels of Quarry Locomotives in the Area of Their Contact with the Rails on Their Traction Capacity","authors":"A. M. Keropyan, A. Yu. Albagachiev","doi":"10.1134/s1052618823080095","DOIUrl":"https://doi.org/10.1134/s1052618823080095","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>As a result of theoretical studies, it is established that the traction force of quarry locomotives is significantly affected by the temperature in the contact zone of the wheel–rail system, the contact zone microgeometry, the macrogeometry of the interacting surfaces, and the axial load. It is determined that, in order to ensure the strength criterion and taking into account the increased axial loads of quarry locomotives, it is necessary to limit the temperature in the contact zone of the wheel–rail system within 300°C by controlling the speed of the wheel slip on the rail. It is found that for the interacting surfaces it is necessary to ensure conditions peculiar to plastic-saturated contact for effective functioning of quarry rail transport.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139064020","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 : 2023-12-28DOI: 10.1134/s1052618823080034
A. S. Archibasov, A. Yu. Popov, E. V. Vasil’ev
Abstract
When designing robot drives and machine tool systems, it is necessary to ensure that there are no backlashes or deformations of elastic links in joint couplings and gears, which minimizes angular errors. This can be achieved by creating backlash-free gears. Currently, worm and planetary backlash-free designs are common having either significant dimensions or low rotational speeds.
{"title":"A Backlash-Free Gear Coupling","authors":"A. S. Archibasov, A. Yu. Popov, E. V. Vasil’ev","doi":"10.1134/s1052618823080034","DOIUrl":"https://doi.org/10.1134/s1052618823080034","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>When designing robot drives and machine tool systems, it is necessary to ensure that there are no backlashes or deformations of elastic links in joint couplings and gears, which minimizes angular errors. This can be achieved by creating backlash-free gears. Currently, worm and planetary backlash-free designs are common having either significant dimensions or low rotational speeds.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139064024","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 : 2023-12-28DOI: 10.1134/s1052618823070051
A. K. Anoprienko, Yu. V. Romanova
Abstract
The influence of extremely low temperatures on the strength characteristics of adhesive-riveted joints made of aluminum of AMg3M grade with different types of polymeric materials is analyzed.
摘要 分析了极低温度对 AMg3M 级铝与不同类型聚合物材料粘合铆接接头强度特性的影响。
{"title":"Analysis of the Effect of Negative Temperature on the Strength of Adhesive-Riveted Joints Made of Aluminum Alloys","authors":"A. K. Anoprienko, Yu. V. Romanova","doi":"10.1134/s1052618823070051","DOIUrl":"https://doi.org/10.1134/s1052618823070051","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The influence of extremely low temperatures on the strength characteristics of adhesive-riveted joints made of aluminum of AMg3M grade with different types of polymeric materials is analyzed.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139068467","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/s1052618823060109
O. A. Leonov, N. Zh. Shkaruba, L. A. Grinchenko, D. A. Pupkova, D. U. Khasyanova
Abstract
The factors influencing the reliability and durability of the joint between a shaft and a rubber reinforced seal are analyzed. It has been established that the theory of tightness of such joints has not yet been developed. The quality of a joint is usually assessed by the amount of leakage. It has been revealed that the amount of leakage depends on the materials from which the shaft and seal are manufactured, the roughness of the shaft surface, the presence of dust in the friction zone, the quality of the sealed liquid, and the operating temperature. In addition, the durability of the work is influenced by macrogeometry parameters like deviation from the perpendicularity of the seal to the shaft, deviation from coaxiality, and radial runout of the shaft. A multifactorial experiment has been carried out, as a result of which an empirical relationship has been established between the radial runout of the shaft, rotational speed, and interference in the joint according to the criterion of the onset of leaks. Analysis of the obtained dependence showed that the radial runout should be compensated by interference in the joint, and with an increase in the rotation speed, the compensation value should be greater due to the fact that the working edge of the seal does not have time to follow the shaft. An empirical relationship between the amount of interference and leakage has been obtained, which indicates that with lower interference, leakage will be greater. The research results can be used at the stage of designing assembly units with seals to reduce the influence of radial runout and deviations from the coaxiality of the shaft relative to the seal.
{"title":"Study of the Influence of Macrogeometry Parameters on the Tightness of Shaft–Seal Joints","authors":"O. A. Leonov, N. Zh. Shkaruba, L. A. Grinchenko, D. A. Pupkova, D. U. Khasyanova","doi":"10.1134/s1052618823060109","DOIUrl":"https://doi.org/10.1134/s1052618823060109","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The factors influencing the reliability and durability of the joint between a shaft and a rubber reinforced seal are analyzed. It has been established that the theory of tightness of such joints has not yet been developed. The quality of a joint is usually assessed by the amount of leakage. It has been revealed that the amount of leakage depends on the materials from which the shaft and seal are manufactured, the roughness of the shaft surface, the presence of dust in the friction zone, the quality of the sealed liquid, and the operating temperature. In addition, the durability of the work is influenced by macrogeometry parameters like deviation from the perpendicularity of the seal to the shaft, deviation from coaxiality, and radial runout of the shaft. A multifactorial experiment has been carried out, as a result of which an empirical relationship has been established between the radial runout of the shaft, rotational speed, and interference in the joint according to the criterion of the onset of leaks. Analysis of the obtained dependence showed that the radial runout should be compensated by interference in the joint, and with an increase in the rotation speed, the compensation value should be greater due to the fact that the working edge of the seal does not have time to follow the shaft. An empirical relationship between the amount of interference and leakage has been obtained, which indicates that with lower interference, leakage will be greater. The research results can be used at the stage of designing assembly units with seals to reduce the influence of radial runout and deviations from the coaxiality of the shaft relative to the seal.</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":"138716675","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/s1052618823060080
V. A. Glazunov, P. A. Laryushkin, K. A. Shalyukhin
Abstract
A mechanism with a remote center of rotation, intended for use in medicine, and in particular, minimally invasive operations, is discussed. The basic mechanism consists of two parallelograms with common links, which allows the surgical instrument to duplicate the movement of the drive link of the mechanism. To ensure greater rigidity of the mechanism, it is proposed to introduce drive redundancy through the use of an additional RRR dyad with a drive pair. The position problem has been solved for the resulting mechanism. A 3D model and a prototype of the mechanism have been also presented.
{"title":"Structure, Kinematics, and Prototyping of a Parallel Manipulator with a Remote Center of Rotation","authors":"V. A. Glazunov, P. A. Laryushkin, K. A. Shalyukhin","doi":"10.1134/s1052618823060080","DOIUrl":"https://doi.org/10.1134/s1052618823060080","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A mechanism with a remote center of rotation, intended for use in medicine, and in particular, minimally invasive operations, is discussed. The basic mechanism consists of two parallelograms with common links, which allows the surgical instrument to duplicate the movement of the drive link of the mechanism. To ensure greater rigidity of the mechanism, it is proposed to introduce drive redundancy through the use of an additional RRR dyad with a drive pair. The position problem has been solved for the resulting mechanism. A 3D model and a prototype of the mechanism have been also presented.</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":"138716270","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/s1052618823060067
M. N. Erofeev, I. S. Splavskiy
Abstract
This paper is devoted to model tribological experiments and analysis of the research results obtained for new materials and coatings, such as SiSiC, with the aim to rank them and to make recommendations for use in thrust hydrodynamic friction units operating at high speeds and loads.
{"title":"The Technique of Tribological Studies of SiSiC High-Speed Thrust Bearings","authors":"M. N. Erofeev, I. S. Splavskiy","doi":"10.1134/s1052618823060067","DOIUrl":"https://doi.org/10.1134/s1052618823060067","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper is devoted to model tribological experiments and analysis of the research results obtained for new materials and coatings, such as SiSiC, with the aim to rank them and to make recommendations for use in thrust hydrodynamic friction units operating at high speeds and loads.</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":"138716279","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/s1052618823060055
N. S. Azikov, A. V. Zinin
Abstract
An analysis of the stability of quadrangular orthotropic composite panels under compression and shear is presented. The stability problem is solved by the Rayleigh–Ritz method in displacements with approximation of the deflection eigenmodes by Krylov functions. An assessment is made of the influence of fastening conditions and the laying pattern of layers of a composite structure on the parameters of the critical behavior of quadrangular panels. The accuracy of the numerical procedures is confirmed by comparison with the results of the exact solution of the main linearized equation of stability theory using the example of an isotropic plate.
{"title":"Influence of the Reinforcement Structure and Boundary Conditions on the Stability of Quadrangular Composite Panels","authors":"N. S. Azikov, A. V. Zinin","doi":"10.1134/s1052618823060055","DOIUrl":"https://doi.org/10.1134/s1052618823060055","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An analysis of the stability of quadrangular orthotropic composite panels under compression and shear is presented. The stability problem is solved by the Rayleigh–Ritz method in displacements with approximation of the deflection eigenmodes by Krylov functions. An assessment is made of the influence of fastening conditions and the laying pattern of layers of a composite structure on the parameters of the critical behavior of quadrangular panels. The accuracy of the numerical procedures is confirmed by comparison with the results of the exact solution of the main linearized equation of stability theory using the example of an isotropic plate.</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":"138716599","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/s1052618823060134
N. N. Popov, D. V. Presnyakov, A. A. Kostyleva
Abstract
A device has been developed based on alloys with a high-temperature shape memory effect. It aims to be used in mechanical engineering products, in particular, nuclear technology, in order to prevent emergency situations of man-made and natural nature. The device works by breaking the electrical circuit in the event of an emergency increase in the ambient temperature above the permissible temperature by cutting the electrical cable. The shape restoration properties of thermosensitive working elements made of the Ni49.5Ti48.0Hf2.5 alloy with high temperature shape memory have been studied. The results of the experiments allow us to conclude that it is possible to use the device in electrical systems for cutting heat-resistant electrical cables with an outer diameter of dout = 3.4–5.0 mm and a copper wire cross-section of 0.2–1.5 mm2 with a knife in an emergency situation, when the ambient temperature exceeds 100°С and the maximum heating reaches 200°С.
{"title":"A Safety Device Based on a High Temperature Shape Memory Alloy","authors":"N. N. Popov, D. V. Presnyakov, A. A. Kostyleva","doi":"10.1134/s1052618823060134","DOIUrl":"https://doi.org/10.1134/s1052618823060134","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A device has been developed based on alloys with a high-temperature shape memory effect. It aims to be used in mechanical engineering products, in particular, nuclear technology, in order to prevent emergency situations of man-made and natural nature. The device works by breaking the electrical circuit in the event of an emergency increase in the ambient temperature above the permissible temperature by cutting the electrical cable. The shape restoration properties of thermosensitive working elements made of the Ni<sub>49.5</sub>Ti<sub>48.0</sub>Hf<sub>2.5</sub> alloy with high temperature shape memory have been studied. The results of the experiments allow us to conclude that it is possible to use the device in electrical systems for cutting heat-resistant electrical cables with an outer diameter of <i>d</i><sub>out</sub> = 3.4–5.0 mm and a copper wire cross-section of 0.2–1.5 mm<sup>2</sup> with a knife in an emergency situation, when the ambient temperature exceeds 100°С and the maximum heating reaches 200°С.</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":"138716611","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/s105261882306002x
A. Yu. Albagachiev, B. M. Gantimirov
Abstract
Test results on fretting wear of metalopolymer materials in a friction couple with structural materials—cast iron 20 and stainless steel 12Kh18N10T—performed over the direct and reverse test schemes are presented. As the metalopolymer material, we took the BELZONA 1111 two-component paste-like material based on a mixture of a metal–ceramic alloy with high-molecular polymers and oligomers.
{"title":"Fretting Wear of Metal–Metalopolymer Friction Couples","authors":"A. Yu. Albagachiev, B. M. Gantimirov","doi":"10.1134/s105261882306002x","DOIUrl":"https://doi.org/10.1134/s105261882306002x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Test results on fretting wear of metalopolymer materials in a friction couple with structural materials—cast iron 20 and stainless steel 12Kh18N10T—performed over the direct and reverse test schemes are presented. As the metalopolymer material, we took the BELZONA 1111 two-component paste-like material based on a mixture of a metal–ceramic alloy with high-molecular polymers and oligomers.</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":"138716614","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/s1052618823060092
A. A. Kovalev, N. V. Rogov, S. E. Tikhomirov, A. S. Krasko, Yu. E. Moiseev
Abstract
This article examines the influence of cutting conditions on performance characteristics such as fatigue strength when milling with an end mill. Based on an analysis of the literature, it was found that fatigue strength depends on the quality of the surface layer of the part, the irregularities of which are stress concentrators. Based on the results of experimental studies, a mathematical model was obtained that describes the relationship between roughness and the stress concentration coefficient from the cutting conditions.
{"title":"The Influence of Cutting Conditions on the Operating Characteristics of a Product","authors":"A. A. Kovalev, N. V. Rogov, S. E. Tikhomirov, A. S. Krasko, Yu. E. Moiseev","doi":"10.1134/s1052618823060092","DOIUrl":"https://doi.org/10.1134/s1052618823060092","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This article examines the influence of cutting conditions on performance characteristics such as fatigue strength when milling with an end mill. Based on an analysis of the literature, it was found that fatigue strength depends on the quality of the surface layer of the part, the irregularities of which are stress concentrators. Based on the results of experimental studies, a mathematical model was obtained that describes the relationship between roughness and the stress concentration coefficient from the cutting conditions.</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":"138716692","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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