Mechanics and Advanced Technologies最新文献

{"title":"Аналіз впливу параметрів валкової розливки-прокатки на дефекти сталевої смуги","authors":"Olexiy Nogovitsyn, Olga Holyavik, Ryslan Boris, Dmytro Sohan, Nataliia Seminska","doi":"10.20535/2521-1943.2023.7.3.292694","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.292694","url":null,"abstract":"Валкова розливка-прокатка є одним з найбільш перспективних і ефективних процесів виробництва сталевого листа. Проводився розрахунок процесу валкової розливки-прокатки. Визначено, що зменшується величина обтиснення при збільшенні швидкості валкової розливки-прокатки. Визначено, що зменшується зворотня швидкість металу при збільшенні швидкості валкової розливки-прокатки. Визначено, що зменшується зусилля прокатки при збільшенні швидкості валкової розливки-прокатки. На основі теоретичних розрахунків прийнято оптимальне зусилля стискування яке дозволяє розливати метал в полосу на великій швидкості без дефектів","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"49 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150501","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}

{"title":"Research of transient processes in a two-way pneumatic drive with vacuum gripping devices","authors":"Serhii Nosko, O. Haletskyi, Dmytro Kostiuk","doi":"10.20535/2521-1943.2023.7.3.290105","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.290105","url":null,"abstract":"An assessment of the current state of research on transient processes in pneumatic actuators is presented. The advantages and disadvantages of pneumatic drives with vacuum gripping devices and their connection with practical design tasks are shown. It has been established that the calculation of parameters and the design of high-speed, typical pneumatic actuators and actuators with vacuum grippers differ significantly. The expediency of using vacuum gripping devices in manipulation drives is shown. It was established that, unlike pneumatic cylinders of mechanical gripping devices, for which the final phase of the actuation cycle is important, in which the piston at the end of the stroke is already stationary, but the pressure in the working cavity increases and, accordingly, the force on the rod increases, for actuators with vacuum gripping devices, this phase is not is taken into account. The choice of a mathematical model and a methodology for calculating the transient processes of double-acting pneumatic actuators is substantiated. The model involves recording the equation of motion of the cylinder piston, supplemented by equations describing pressure changes in the working and exhaust cavities of the cylinder, followed by computer simulation. As part of the mathematical model, a study of transient processes was carried out, therefore, all simulation results are shown in the time interval limited by the period of piston movement (ie, preparatory and final periods were not considered). The effect of the effective areas of the input and output pneumolines of the pneumocylinder on dynamic processes in the actuator was studied. It was established that the change in the diameter of the inlet opening and, accordingly, the area of the inlet opening of the working or exhaust cavity leads to a change in the flow rate and capacity factor of the communication lines, is characterized by a change in the kinetic energy of the output link, limits its working speed and ensures the smoothness of the movement of the output link of the drive.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"119 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154765","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}

{"title":"Adaptation of corporate model of ukrainian aircraft product life cycle to the international methodology of systems engineering","authors":"Svitlana Kryvova, Constantine Zvorykin, Serhii Trubachev","doi":"10.20535/2521-1943.2023.7.3.289919","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.289919","url":null,"abstract":"Problems. Under the present-day conditions, the preservation of competences of Ukrainian aircraft construction enterprises will be determined by the possibility of enterprises attracting to participation in international cooperation programs and projects. But this is possible only on the condition of prior harmonization of the product development methodology adopted in Ukrainian aircraft construction to that used in the international aircraft construction projects. Purose. The main goal of this article is to determine the ability and ways of adapting the corporate model of life cycle of aircraft engineering projects by Ukrainian aircraft construction enterprises to modern global aircraft construction practices. Implementation methodology. The research methodology predicted the identification of the main modern trends in the field of system engineering for the creation of a science-intensive product, as well as the analysis of concepts of presenting the life cycle of complex technical systems in international regulatory documents, industry regulations, guidelines and other information sources. Criteria for perspective of using the identified informational and normative sources as close analogues for the development of one's own corporate model of life cycle of an aircraft construction product were identified. On the basis of the criterion analysis of researched concepts of the life cycle of complex technical systems representing, the requirements were formed, which formed the basis of the concept of one's own corporate model of life cycle of the aircraft construction product.  The results. The result of conducted research was the proposed concept of a corporate model of the life cycle of an aircraft construction product manufactured in Ukraine, which takes into account the international experience and best practices of leading aircraft construction companies, including focusing on the experience accumulated by domestic aircraft manufacturers. Conclusions. According to the results of analysis of advanced world practices in the field of creating a science-intensive product, an own corporate model of the life cycle of an aircraft product manufactured in Ukraine was proposed. In the future, on the basis of this model, a system for creating an aircraft product can be built and developed, which will be harmonized with existing world practices and will allow the domestic aircraft construction enterprises to fight for participation in international programs and projects.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"138 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153106","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}

{"title":"Review of methods of degassing of working fluids","authors":"Olexiy Petrenko, O. Luhovskyi","doi":"10.20535/2521-1943.2023.7.3.290444","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.290444","url":null,"abstract":"The article discusses known methods of degassing working fluids. A brief description of known degassing methods is given, an analysis of their advantages and disadvantages is provided. Emphasis is placed on the ultrasonic method of degassing, which is implemented with the help of low-amplitude and high-amplitude ultrasonic emitters. Illustrative photo materials of an experimental study of the ultrasonic method of degassing with the involvement of piezoelectric transducers are presented. The need for additional work to increase the efficiency of ultrasonic degassing by means of an experimental study of the influence of the frequency, amplitude and intensity of ultrasonic oscillations on the degassing process is formulated.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"98 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154031","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}

{"title":"The evolution of the compaction process and the deformed state of porous blanks during their hot forging in the open die","authors":"Gennadiy Baglyuk, Stepan Kyryliuk","doi":"10.20535/2521-1943.2023.7.3.292713","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.292713","url":null,"abstract":"The article presents the results of the study of the evolution of the deformed state of the workpieces, the energetic parameters of the process and the distribution of porosity over the volume of the forging at all stages of hot forging of porous powder forgings in an open die. Modeling of the process was carried out using the finite element method using the DEFORM 2D/3D software complex. As a result of the simulation, it was found that at the initial stage of the process, the blank is mainly compacted with minimal radial flow of the material. Noticeable flow of metal into the groove groove area begins only when the forging material reaches an average relative density exceeding 90%. A significantly different nature of the distribution of axial er and radial ez deformations over the volume of the forging was noted. A zone with increased levels of values of axial deformations is formed in the central layer of the forging, equidistant from the upper and lower surfaces of the die cavity, and the values of radial deformations decrease with distance from the zone bordering the free side surface of the workpiece in the radial (to-center) direction. The minimum values of ez and er appear in the upper and lower angular stagnant zones of the forging. It is shown that the graph of the dependence of the deformation force on the displacement of the punch is marked by the presence of at least three characteristic sections due to the relationship between the processes of compaction and forging shape change at each stage of the process.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"10 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153842","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}

{"title":"The potential of using 3D printing in the manufacture of mini hydraulic systems","authors":"Ivan Kostiuchenko, Oleh Levchenko","doi":"10.20535/2521-1943.2023.7.3.294001","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.294001","url":null,"abstract":"The work is devoted to an analytical engineering study of the practicality of using 3D printing for the manufacture of hydraulic components, in order to solve the problems associated with weight, size and complexity inherent in traditional hydraulic elements. The research aims to demonstrate the feasibility of using 3D printing to achieve simplified design and increased efficiency. The work presents samples of hydraulic elements printed on a 3D printer, which reflects the practical feasibility of this approach. A simple and practical design methodology is proposed for two key components of a typical hydraulic system, namely, a hydraulic cylinder and a directional servo-valve, which allows hydraulic actuators to be controlled using any programmable microcontroller. A distinctive feature of this approach is the emphasis on the principles of compact design, which facilitates the integration of many parts into single, multifunctional part. In addition, the use of lightweight materials in 3D printing helps reduce the overall weight of hydraulic components. The proposed method also allows the integration of various hydraulic elements into a single integral structure printed on a 3D printer, offering a pragmatic solution to the size and complexity issues associated with traditional metal hydraulic systems. The scope of this innovative approach extends to the creation of prototypes of hydraulic and pneumatic robots, as well as devices that require compactness, precision and adaptability. This methodology is promising for implementation in the field of robotics, especially for tasks where space and weight constraints are critical factors.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153457","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}

{"title":"The possibility of detecting non-x-ray fragments in the body of the wounded by the contact method","authors":"Oleksandr F. Salenko, Yuriy Danylchenko, Viktor Cherniak, V. Orel, Valentyna Datsenko, Bohdan Salenko, Kostiantyn Karpenko","doi":"10.20535/2521-1943.2023.7.3.294822","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.294822","url":null,"abstract":"The types of injuries and types of striking elements were analyzed, the conditions of patients requiring urgent surgical intervention were assessed. The possibilities of existing means of diagnosing fragments in the patient's body were analyzed, and it was concluded that for non-X-ray contrast fragments, the proposed method of mechanical contact with a special flexible and elastic probe is appropriate and effective.A special tool for examining wound canals has been developed, consisting of a flexible probe for individual use and a handle-holder with a microphone capsule, the membrane of which is directly connected to the probe and reacts to mechanical contact with an obstacle, and the capsule itself is directly connected to the oscilloscope through a signal amplifier . which has spectral signal processing circuits.The problem of the interaction of the elastic contact of a non-rigid element with a fragment located in a viscous medium is set, provided that the properties of the medium are not constant. Typical solutions of this problem for various types of fragments and parameters of the contacting element itself are presented. A picture of the noise emission accompanying the contact is shown.The functional dependence of noise emission parameters on the shape and type of the foreign object in the wound canal was revealed. The expediency of using the frequency-amplitude characteristic of noise radiation as a controlled parameter has been proven. A conclusion was made about the functional conditioning of the width of the signal spectrum and basic frequencies at the time of mechanical contact with a foreign object in the wound, depending on its shape and type; it was established that the use of an oscilloscope with a spectral analysis channel allows for the fairly accurate identification of a non-radiocontrast foreign object in a wound.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"70 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154321","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}

{"title":"Analysis of spray particles entrance of Right-angle cold spray nozzle based on CFD","authors":"Kun Tan","doi":"10.20535/2521-1943.2023.7.3.292244","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.292244","url":null,"abstract":"Cold spray technology is a solid-state deposition technology, and the nozzle is an important part of the cold spray system. This article proposes a right-angle nozzle. The characteristic of this nozzle is that it can change the flow direction of the gas flow inside the nozzle to realize spraying on the surface of special parts; the acceleration of particles by the right-angle nozzle with different particle entrances is studied. The results show that the outlet center velocity of the right-angle nozzle with a circular throat section is greater, the viscous boundary layer effect is better, and the effective circulation area is larger; the maximum airflow velocity near the outlet of the right-angle nozzle at the particle entrance A is 663.4m/s; it can also effectively avoid the deposition of particles inside the right-angle nozzle, thereby reducing the loss of kinetic energy during the acceleration of particles in the right-angle nozzle; the research on the structure of the new right-angle cold spray nozzle can provide reference for the nozzle of cold spray technology Opinion.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"17 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154778","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}

{"title":"Prediction of drag coefficient of a hybrid body design of aircraft","authors":"Shreya Viswanath, Riya Vasan S, V. Gopalan, Nilesh Satonkar","doi":"10.20535/2521-1943.2023.7.3.284872","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.284872","url":null,"abstract":"This study presents a design of a quintessential hybrid body aircraft, a blended NACA 4414 airfoil winged body. The Design of Elements approach, via Response Surface Methodology (RSM), is used to evaluate the influence of frontal area, chamber angle and materials on the drag coefficient. The Analysis of Variance (ANOVA) is carried out to find the influences of the same. In order to minimize the simulations, a model in RSM, Central Composite Design (CCD) is used. The results of the same are verified via Computational Fluid Dynamics (CFD) simulations. Moreover, combinations of shape memory polymers with composites and graphene nano powder are proposed, for light-weighting and enhanced mechanical properties. A comparison of said materials with commercially used aluminum alloys is done. It is found that the lowest drag coefficient is achievable at a frontal area of 1625 m2 with an angle of attack of -10o and with a material combination of carbon fiber reinforced polymer, glass fiber reinforced polymer, and 10% graphene nano powder by weight.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"44 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139164410","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}

{"title":"Model of the control object of the mechatronic microclimate system of a medium-sized greenhouse","authors":"Yelyzaveta Synytsyna, Sofiya Kosmuna","doi":"10.20535/2521-1943.2023.7.3.290773","DOIUrl":"https://doi.org/10.20535/2521-1943.2023.7.3.290773","url":null,"abstract":"Sudden changes in air temperature and humidity have a negative impact on crop production. Modern methods of regulating the microclimate of greenhouse facilities are reduced to the simplest one - controlling the flow and temperature of air masses. The aim of this work is to create and test (verify the plausibility) a simplified model of the microclimate of a medium-sized greenhouse. The simplified greenhouse model takes into account the main processes that occur under the influence of external factors (air exchange, mass transfer, moisture transfer, heat transfer), and also takes into account the geometric and spatial characteristics of the object. Each test experiment involves determining the effect of only one parameter at fixed values of all other parameters. A simplified reference model of changes in microclimate parameters (temperature, air velocity and pressure) was developed using Ansys software. Using computer modelling of temperature fields and velocities, an analysis was carried out to determine the possibility of using the model in the control system. The microclimate characteristics were analysed when air pressure, velocity and temperature were stabilised. The results of the study and the developed model are suitable for use in control algorithms for the greenhouse mechatronic system to take into account cyclic daily changes in parameters.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"34 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139163624","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}