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Journal of Machinery Manufacture and Reliability最新文献

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Mathematical Modeling of the Hydrodynamic Process of a Liquid Flow in a Pipeline at Different Valve Positions 不同阀位下管道流体动力过程的数学建模
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700547
D. D. Fugarov, S. V. Lesnyak, O. A. Purchina, I. V. Mogil’nikova
{"title":"Mathematical Modeling of the Hydrodynamic Process of a Liquid Flow in a Pipeline at Different Valve Positions","authors":"D. D. Fugarov,&nbsp;S. V. Lesnyak,&nbsp;O. A. Purchina,&nbsp;I. V. Mogil’nikova","doi":"10.1134/S1052618824700547","DOIUrl":"10.1134/S1052618824700547","url":null,"abstract":"<p>Hydrodynamic processes in a pipeline were studied, and a mathematical model was developed using the finite element method in the Ansys Workbench mathematical modeling package. A mathematical model of the process of gradual opening of a pipeline valve has been developed, which provides a detailed understanding of the flow dynamics and allows us to draw conclusions about the effect of the valve opening on the pressure distribution inside the pipeline.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"817 - 823"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761749","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}
引用次数: 0
Analysis of the Position Error and Displacement Parameters of Ideal and Real Mechanisms for Robotic Systems 机器人系统理想机构与实际机构的位置误差与位移参数分析
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700559
F. F. Khabibullin, R. T. Islamov, L. F. Khabibullina
{"title":"Analysis of the Position Error and Displacement Parameters of Ideal and Real Mechanisms for Robotic Systems","authors":"F. F. Khabibullin,&nbsp;R. T. Islamov,&nbsp;L. F. Khabibullina","doi":"10.1134/S1052618824700559","DOIUrl":"10.1134/S1052618824700559","url":null,"abstract":"<p>The elements of kinematic pairs most often used in the design of mechanisms are considered. Possible primary errors for a point, line, plane, spherical pair, sliding pair, and turning pair are presented. The number of primary errors of a connecting rod with elements of two rotational pairs are calculated. Calculation of a cam mechanism is carried out. Recommendations for identifying primary errors in the mechanisms of robotic systems are presented.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"668 - 675"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761776","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}
引用次数: 0
Internal Resonances under Oscillations of a Double Pendulum 双摆振荡下的内部共振
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S105261882470047X
A. S. Smirnov, D. V. Morozov
{"title":"Internal Resonances under Oscillations of a Double Pendulum","authors":"A. S. Smirnov,&nbsp;D. V. Morozov","doi":"10.1134/S105261882470047X","DOIUrl":"10.1134/S105261882470047X","url":null,"abstract":"<p>In this paper, internal resonances appearing in mechanical systems with several degrees of freedom, when the ratio between the frequencies of their oscillations represent integers, are studied. As specific examples, such systems with two degrees of freedom like a double mathematical pendulum and a double physical pendulum are considered. The relationships for the oscillation frequencies of each of these systems are presented in dimensionless form depending on two dimensionless parameters characterizing the ratio between the weights of the end loads or weighty links, as well as the ratio between the lengths of the links. The conditions that should be imposed on these dimensionless parameters in order to provide for the appearance of internal resonances have been revealed. The obtained solutions are presented graphically in the form of curves on the plane of dimensionless parameters corresponding to internal resonances. In addition, a detailed investigation into the nature of these curves is presented, too. The results found upon analyzing the two problems are compared with each other. The obtained relationships have fundamental theoretical significance, which could be useful for the case of different technical applications.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"676 - 685"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761828","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}
引用次数: 0
Modeling Earthworks by an Excavator on an Extraction Site (Working Face) 挖掘机在采掘现场（工作面）的土方工程建模
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700481
V. N. Kabanov
{"title":"Modeling Earthworks by an Excavator on an Extraction Site (Working Face)","authors":"V. N. Kabanov","doi":"10.1134/S1052618824700481","DOIUrl":"10.1134/S1052618824700481","url":null,"abstract":"<p>The code requirements on drawing up construction design documents do not provide any method of evaluating the mechanical facilities for compliance with the requirements of a construction project. This work is aimed at determining the effective excavator radius, which ensures compliance with the process cycle set by the project. The effective radius of an excavator is the base for designing the excavator working face. A digital model describing each excavator process cycle on one extraction site (working face) has been used as the research tool. Mathematical expressions have been obtained for determining the duration of each excavator process cycle for operation on one extraction site (working face). An area for further studies is identified that consists in theoretically underpinning the position of a bucket discharge point.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"807 - 816"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761735","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}
引用次数: 0
Assessment of the Operational Reliability of Underground Transport and Technological Machines 地下运输机械运行可靠性评价
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700596
S. S. Chibukhchyan
{"title":"Assessment of the Operational Reliability of Underground Transport and Technological Machines","authors":"S. S. Chibukhchyan","doi":"10.1134/S1052618824700596","DOIUrl":"10.1134/S1052618824700596","url":null,"abstract":"<p>Assessing the operational reliability of underground transport is important for increasing the efficiency of operation, operational and environmental safety, planning and developing a set of measures to reduce the number of failures and downtime, reducing additional financial costs and expenses, assessing and predicting operational safety, and reducing the accident rate. The obtained results of calculations of the indicators of operational reliability and technical operation of machines operating in underground conditions can be used to calculate the optimal frequency of maintenance of the main components of these machines.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"733 - 737"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761726","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}
引用次数: 0
Dynamic Control of the Resonant Frequency of the Blade of the Saw Module Performing a Circular Flat Rotational–Translational Motion 圆锯模块叶片平转平动共振频率的动态控制
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700572
M. A. Blokhin, I. I. Dymchakov, A. P. Shein, D. D. Emel’yanov
{"title":"Dynamic Control of the Resonant Frequency of the Blade of the Saw Module Performing a Circular Flat Rotational–Translational Motion","authors":"M. A. Blokhin,&nbsp;I. I. Dymchakov,&nbsp;A. P. Shein,&nbsp;D. D. Emel’yanov","doi":"10.1134/S1052618824700572","DOIUrl":"10.1134/S1052618824700572","url":null,"abstract":"<p>This article is devoted to the design and engineering calculation of the dynamic stability of the saw blade of a new type of sawing equipment with a saw module performing a circular flat rotational–translational motion. The presented equipment relates to the field of sawing hard materials, mainly wood, but also metal, plastics, stone, bone, glass, and others. The main assembly unit of the equipment is the saw unit, consisting of six saw modules that ensure its dynamic balance without additional balancing (correction) elements.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"799 - 806"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761734","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}
引用次数: 0
Study of Variability of the Crack Growth Rate by Applying a Crack Growth Model to Sequences of Extrema Modeled by Markov Matrices 应用马尔可夫矩阵极值序列的裂纹扩展模型研究裂纹扩展速率的变异性
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700584
I. V. Gadolina
{"title":"Study of Variability of the Crack Growth Rate by Applying a Crack Growth Model to Sequences of Extrema Modeled by Markov Matrices","authors":"I. V. Gadolina","doi":"10.1134/S1052618824700584","DOIUrl":"10.1134/S1052618824700584","url":null,"abstract":"<p>The stage of crack propagation in aircraft structures under fatigue is of great interest. The problem of variation in the duration of fatigue crack growth is considered. Under irregular loading, durability can vary significantly. For this study, loading processes are modeled using the Markov address matrix method and several replicas of the initial process are obtained. The fatigue life of each replica is calculated using the Willenborg crack growth retardation model. A model for random processes, the TWIST sequence, which is widely used in aviation to investigate the likely scatter of durability due to the uncertainty of load information in a numerical experiment, is used as the basis for the simulation.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"719 - 724"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761720","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}
引用次数: 0
Investigation of the Possibility of Application of an Adaptive Control System for the Reproduction of Asymmetric Oscillations on a Directional Vibration Machine 非对称振动再现自适应控制系统应用于定向振动机的可能性研究
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700602
M. D. Gerasimov, I. S. Zaitceva
{"title":"Investigation of the Possibility of Application of an Adaptive Control System for the Reproduction of Asymmetric Oscillations on a Directional Vibration Machine","authors":"M. D. Gerasimov,&nbsp;I. S. Zaitceva","doi":"10.1134/S1052618824700602","DOIUrl":"10.1134/S1052618824700602","url":null,"abstract":"<p>This article is devoted to the development of vibration technologies related to the automatic control of vibrations. The problem of controlling a two-rotor vibration machine to reproduce the mode of asymmetric vibrations is considered. The parameters of the vibration machine are chosen on the basis of the method of calculation of the dynamic factor by the exciting forces of vibration exciters. The required multiple frequency synchronization of unbalanced rotors is provided by means of an adaptive proportional-integral speed controller. The results of calculation of machine parameters for the most pronounced effect of asymmetry of the total exciting force of vibration exciters are presented as are illustrations on the results of computer modeling of the vibration machine control system for different rotational speeds and parameters of unbalanced rotors.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"783 - 789"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761727","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}
引用次数: 0
Modeling the Change in Shape of Low-Cycle Inclined Semi-Elliptical Cracks 低周倾斜半椭圆裂纹形状变化的建模
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700353
N. A. Makhutov, I. V. Makarenko, L. V. Makarenko
{"title":"Modeling the Change in Shape of Low-Cycle Inclined Semi-Elliptical Cracks","authors":"N. A. Makhutov,&nbsp;I. V. Makarenko,&nbsp;L. V. Makarenko","doi":"10.1134/S1052618824700353","DOIUrl":"10.1134/S1052618824700353","url":null,"abstract":"<p>Modeling of the spatial low-cycle crack kinetics for refined service life and survivability of elements of aviation, rocket and space, nuclear, and other critical equipment is studied. The results of experimental studies and numerical calculations of the parameters of shape change are presented, taking into account the characteristics of the microrelief and the complex surface of low-cycle fracture of inclined surface semi-elliptical cracks. A functional relationship is shown between the mesostructural characteristics of low-cycle fragmentation of the surface of the cracks under study with parameters of nonlinear fracture mechanics such as the strain intensity coefficient and the specific elastoplastic work of fracture at a certain point of the defect contour.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"693 - 701"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761827","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}
引用次数: 0
Dimensional Characteristics of Titanium Powders Obtained for Additive Machines by Electrodispergation of OT4 Alloy Wastes in Alcohol OT4合金废料在酒精中电分散制备添加剂用钛粉的尺寸特性
IF 0.4
Journal of Machinery Manufacture and Reliability Pub Date : 2024-12-02 DOI: 10.1134/S1052618824700638
E. V. Ageev, A. E. Ageeva
{"title":"Dimensional Characteristics of Titanium Powders Obtained for Additive Machines by Electrodispergation of OT4 Alloy Wastes in Alcohol","authors":"E. V. Ageev,&nbsp;A. E. Ageeva","doi":"10.1134/S1052618824700638","DOIUrl":"10.1134/S1052618824700638","url":null,"abstract":"<p>Based on experimental studies aimed at studying the dimensional characteristics of titanium powders obtained for additive machines by electrodispersing OT4 alloy waste in propyl alcohol, the following were established: The average volumetric diameter of the particles is 43.3 μm. The modal particle diameter is 52.29 µm. The particle size range is 1.61. The specific surface area of the particles is 2971 cm<sup>2</sup>/cm<sup>3</sup>. The particle elongation coefficient is 1.12. It is noted that spherical titanium powder materials obtained by electrodispersing waste titanium alloy OT4 can be used effectively for additive machines.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"852 - 858"},"PeriodicalIF":0.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761954","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}
引用次数: 0
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