In the last few years, many efforts have been spent on autonomous and unmanned systems, having the advantage of operating at relatively low speed and reducing the stress for the farmer. However, one major limitation to the implementation of autonomous systems is the difficulty in properly controlling operation paths. Random movements typically implemented by an automatic mower system are not viable in agriculture, thus new approaches have to be developed. The present paper introduces a different approach based on the traditional funicular technology: new advancement in materials and control electronics make it possible to modernize such old technique, opening new fields of application. The system is characterized by the absence of transmission organs: this design allows a reduction of the total mass, thus minimizing soil disturbance and also the overall pulling force on average lower than 2 kN. The system is equipped with RGB/IR cameras which allows the collection of images on the go during seeding operations. The forward speed of the system is typically ranging between 0.5 and 2 m·s, and it optimizes seed distribution with coefficients of variation lower than 15% both in the lateral and longitudinal directions.
{"title":"Testing of funicular trolley for agricultural operations","authors":"Kaihua Liu, Fabio Pasquazi, Massimo Dore, Michele Graiff","doi":"10.22616/erdev.2022.21.tf137","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf137","url":null,"abstract":"In the last few years, many efforts have been spent on autonomous and unmanned systems, having the advantage of operating at relatively low speed and reducing the stress for the farmer. However, one major limitation to the implementation of autonomous systems is the difficulty in properly controlling operation paths. Random movements typically implemented by an automatic mower system are not viable in agriculture, thus new approaches have to be developed. The present paper introduces a different approach based on the traditional funicular technology: new advancement in materials and control electronics make it possible to modernize such old technique, opening new fields of application. The system is characterized by the absence of transmission organs: this design allows a reduction of the total mass, thus minimizing soil disturbance and also the overall pulling force on average lower than 2 kN. The system is equipped with RGB/IR cameras which allows the collection of images on the go during seeding operations. The forward speed of the system is typically ranging between 0.5 and 2 m·s, and it optimizes seed distribution with coefficients of variation lower than 15% both in the lateral and longitudinal directions.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129275081","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf051
Inna Samuilik, F. Sadyrbaev, S. Atslega
. Attracting sets for systems of ordinary differential equations, which arise in multiple applications, are constructed. The six-dimensional system is in the focus. The construction is based on previously obtained attractors for systems of orders two and three. First, the uncoupled six-dimensional system is considered. Adding some additional elements makes this system coupled. The attractors, however, remain in a modified form. The graphs of all six solutions are provided as visual evidence of the existence of attractors.
{"title":"Mathematical modelling of nonlinear dynamic systems","authors":"Inna Samuilik, F. Sadyrbaev, S. Atslega","doi":"10.22616/erdev.2022.21.tf051","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf051","url":null,"abstract":". Attracting sets for systems of ordinary differential equations, which arise in multiple applications, are constructed. The six-dimensional system is in the focus. The construction is based on previously obtained attractors for systems of orders two and three. First, the uncoupled six-dimensional system is considered. Adding some additional elements makes this system coupled. The attractors, however, remain in a modified form. The graphs of all six solutions are provided as visual evidence of the existence of attractors.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121835414","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf198
András Szeberényi, Rita Lukács, Á. Papp-Váry
Environmental awareness has become perhaps one of the most widely used terms today. But how do young people relate to it? Our research hypotheses examined the opinions and attitudes of students at the Budapest Metropolitan University when they were first introduced to the concept of environmental awareness, when they first learned about it, how important they consider environmental protection to be in today’s world, and to what extent environmental problems affect people’s health. In our research, we formulated three hypotheses, tested by a questionnaire as a primary research method. The research results were analysed using Pearson’s chi-squared test and variance analysis as statistical methods to determine whether there is a statistically significant difference between the expected frequencies and the observed frequencies in one or more categories. The results show that the majority of students (85.19%) had heard about environmental awareness before starting secondary school and that 83.61% of them had learned about the importance of renewable energy, environmental awareness or environmental protection in Biology and/or Geography classes. We also analysed the correct or incorrect handling of certain types of waste (e.g., plastic, takeaway paper cups, used tissues and napkins, yoghurt and sour cream cups, styrofoam, broken mirrors etc.). The research highlighted the types of waste for which some significant differences were found. For example, there was a significant difference in the treatment of plastic cup tops, which means that those who have learned about renewable energy, environmental awareness, or environmental protection in Biology and/or Geography classes are more likely to treat cup tops correctly as waste.
{"title":"Examining environmental awareness of university students","authors":"András Szeberényi, Rita Lukács, Á. Papp-Váry","doi":"10.22616/erdev.2022.21.tf198","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf198","url":null,"abstract":"Environmental awareness has become perhaps one of the most widely used terms today. But how do young people relate to it? Our research hypotheses examined the opinions and attitudes of students at the Budapest Metropolitan University when they were first introduced to the concept of environmental awareness, when they first learned about it, how important they consider environmental protection to be in today’s world, and to what extent environmental problems affect people’s health. In our research, we formulated three hypotheses, tested by a questionnaire as a primary research method. The research results were analysed using Pearson’s chi-squared test and variance analysis as statistical methods to determine whether there is a statistically significant difference between the expected frequencies and the observed frequencies in one or more categories. The results show that the majority of students (85.19%) had heard about environmental awareness before starting secondary school and that 83.61% of them had learned about the importance of renewable energy, environmental awareness or environmental protection in Biology and/or Geography classes. We also analysed the correct or incorrect handling of certain types of waste (e.g., plastic, takeaway paper cups, used tissues and napkins, yoghurt and sour cream cups, styrofoam, broken mirrors etc.). The research highlighted the types of waste for which some significant differences were found. For example, there was a significant difference in the treatment of plastic cup tops, which means that those who have learned about renewable energy, environmental awareness, or environmental protection in Biology and/or Geography classes are more likely to treat cup tops correctly as waste.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"667 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115124374","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf207
Tatjana Sinkus, I. Ozola
Within the COVID-19 pandemic period teachers at higher educational institutions have been forced to shift their traditional classroom strategies to blended learning which involves a combination of online instructional format with traditional face-to-face one. This approach to education has also been adopted by foreign language teachers of the Latvia University of Life Sciences and Technologies and integrated into the Academic English course for postgraduate engineering students. The present research highlights the importance of reflection in the educational process and is aimed to investigate students’ perceptions of their blended learning experience. In the course of the study, a semi-structured interview and a questionnaire were administred involving postgraduate engineering students. The analysis of the results obtained in student reflection provided empirical evidence to the claim that the students were advantageously influenced as a result of the blended learning environment in the Academic English course. Most of the students confirmed that all necessary Academic English skills – reading, writing, listening and speaking can be developed in a hybrid format, that blended learning environment promotes self-directed learning skills and enhances motivation to study the foreign language. The majority of the respondents reported value of virtual reality that increased meaningful interaction and built a sense of community and spoke in favor of continuing education in blended learning context. The final part of the article presents conclusions of the research findings and recommendations for the EAP practitioners which could also be used in an ordinary post pandemic study process.
{"title":"Postgraduate engineering students’ reflections on blended learning in academic English course","authors":"Tatjana Sinkus, I. Ozola","doi":"10.22616/erdev.2022.21.tf207","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf207","url":null,"abstract":"Within the COVID-19 pandemic period teachers at higher educational institutions have been forced to shift their traditional classroom strategies to blended learning which involves a combination of online instructional format with traditional face-to-face one. This approach to education has also been adopted by foreign language teachers of the Latvia University of Life Sciences and Technologies and integrated into the Academic English course for postgraduate engineering students. The present research highlights the importance of reflection in the educational process and is aimed to investigate students’ perceptions of their blended learning experience. In the course of the study, a semi-structured interview and a questionnaire were administred involving postgraduate engineering students. The analysis of the results obtained in student reflection provided empirical evidence to the claim that the students were advantageously influenced as a result of the blended learning environment in the Academic English course. Most of the students confirmed that all necessary Academic English skills – reading, writing, listening and speaking can be developed in a hybrid format, that blended learning environment promotes self-directed learning skills and enhances motivation to study the foreign language. The majority of the respondents reported value of virtual reality that increased meaningful interaction and built a sense of community and spoke in favor of continuing education in blended learning context. The final part of the article presents conclusions of the research findings and recommendations for the EAP practitioners which could also be used in an ordinary post pandemic study process.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121606955","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf116
T. Lipiński, J. Pietraszek, A. Wach
Commercial iron alloys apart of typical chemical elements contain phosphorus, sulfur, oxygen as well as nonmetallic inclusions. These elements can form solutions in liquid metal, or they can form separate phases. The physical and chemical reactions that occur in the process of steel melting and solidification produce non-metallic compounds and phases, referred to as inclusions. Inclusions as impurities found in steel can affect its performance characteristics. The article discusses the results of a study investigating the effect of oxygen on the fatigue strength of structural steel during rotary bending. The study was performed on 7 heats produced in an industrial plant. Fourteen heats were produced in 100 ton oxygen converter. All heats were desulfurized. The heats from the converter were subjected to vacuum circulation degassing. The experimental variants were compared in view of the heat treatment options. The examination was realized by the rotatory curving machine about the frequency of pendulum cycles: 6000 periods on minute. For basis was accepted on fatigue defining endurance level 107 cycles. The level of the fatigue-inducing load was adapted to the strength properties of steel from 540 to 650 MPa. The fatigue strength of steel with tested for oxygen content in steel was determined during rotary bending. The results revealed that fatigue strength is determined by the contents of oxygen impurity spaces and tempering temperature. A reduction in the fatigue strength during rotary bending of low-carbon steel from 368 to 252 MPa was observed when the tempering temperature changed from 200 to 600oC. It was found that with an increase in the content from 0.0023%, 0.003% of the bending transfer (for all temperatures from 298 to 328 MPa) can be transferred.
{"title":"Influence of oxygen content in medium carbon steel on bending fatigue strength","authors":"T. Lipiński, J. Pietraszek, A. Wach","doi":"10.22616/erdev.2022.21.tf116","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf116","url":null,"abstract":"Commercial iron alloys apart of typical chemical elements contain phosphorus, sulfur, oxygen as well as nonmetallic inclusions. These elements can form solutions in liquid metal, or they can form separate phases. The physical and chemical reactions that occur in the process of steel melting and solidification produce non-metallic compounds and phases, referred to as inclusions. Inclusions as impurities found in steel can affect its performance characteristics. The article discusses the results of a study investigating the effect of oxygen on the fatigue strength of structural steel during rotary bending. The study was performed on 7 heats produced in an industrial plant. Fourteen heats were produced in 100 ton oxygen converter. All heats were desulfurized. The heats from the converter were subjected to vacuum circulation degassing. The experimental variants were compared in view of the heat treatment options. The examination was realized by the rotatory curving machine about the frequency of pendulum cycles: 6000 periods on minute. For basis was accepted on fatigue defining endurance level 107 cycles. The level of the fatigue-inducing load was adapted to the strength properties of steel from 540 to 650 MPa. The fatigue strength of steel with tested for oxygen content in steel was determined during rotary bending. The results revealed that fatigue strength is determined by the contents of oxygen impurity spaces and tempering temperature. A reduction in the fatigue strength during rotary bending of low-carbon steel from 368 to 252 MPa was observed when the tempering temperature changed from 200 to 600oC. It was found that with an increase in the content from 0.0023%, 0.003% of the bending transfer (for all temperatures from 298 to 328 MPa) can be transferred.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114461108","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf015
Haoran Wei, Ling Xin, Pei Liu
Global climate change is causing icebergs to melt, sea levels to rise, some islands to disappear, El Nino is rampant, and extreme weather occurs frequently. It profoundly affects the progress of human civilization and threatens everyone’s living environment. It is the common task of all mankind to vigorously promote CO2 reduction and deal with global warming. Among various carbon emission reduction measures and policies, CO2 emission reduction technology has made rapid progress and has distinctive features in practical application. The potential economic benefits of further carbon abatement research are huge, as high value-added products can be obtained from cheap CO2 sources, resulting in significant economic benefits. In addition, as a “renewable” carbon and oxygen resource, integrating CO2 into the basic raw material of the production process is an important sustainable development strategy, so the environmental benefits of further strengthening CO2 emission reduction cannot be ignored. From the perspective of the CO2 emission cycle, this paper introduces the widely used CO2 emission reduction technology and expounds on the trend of CO2 emission reduction in the future.
{"title":"Types of CO2 emission reduction technologies and future development trends","authors":"Haoran Wei, Ling Xin, Pei Liu","doi":"10.22616/erdev.2022.21.tf015","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf015","url":null,"abstract":"Global climate change is causing icebergs to melt, sea levels to rise, some islands to disappear, El Nino is rampant, and extreme weather occurs frequently. It profoundly affects the progress of human civilization and threatens everyone’s living environment. It is the common task of all mankind to vigorously promote CO2 reduction and deal with global warming. Among various carbon emission reduction measures and policies, CO2 emission reduction technology has made rapid progress and has distinctive features in practical application. The potential economic benefits of further carbon abatement research are huge, as high value-added products can be obtained from cheap CO2 sources, resulting in significant economic benefits. In addition, as a “renewable” carbon and oxygen resource, integrating CO2 into the basic raw material of the production process is an important sustainable development strategy, so the environmental benefits of further strengthening CO2 emission reduction cannot be ignored. From the perspective of the CO2 emission cycle, this paper introduces the widely used CO2 emission reduction technology and expounds on the trend of CO2 emission reduction in the future.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"6 21","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113979427","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf215
S. Kaleja, A. Butlers
Nutrient-rich organic soils in forest lands are found mainly in naturally wet (Dryopterioso–caricosa and Filipendulosa) and drained (Oxalidosa turf.mel.) broadleaf dominated stands. These soils are one of the largest sources of greenhouse gas (GHG) emissions in Latvia, and according to the latest national GHG inventory report, GHG emissions from organic soils in Latvia in 2020 amounted to 6.1 million tons of CO2 eq. from the land use, land use change and forestry sector. High GHG emissions from organic soils also point to considerable opportunities for climate change mitigation through improved forest management practices. The results of the sociological survey presented in this paper are part of a larger study that aims to provide forest managers with decision support tools, including carbon sequestration and GHG emission factors and modeling tools for planning climate change mitigation measures when managing forest stands with fertile organic soils. Purpose of the sociological analysis is to gather information about the readiness of the target group to implement the results of the research in practice. To find out the opinion of the target group, the preconditions for the implementation of climate change mitigation measures in forests on fertile organic soils were identified and a survey of target groups was conducted, involving 509 respondents from several Latvian cities and rural areas. The results of the survey show the attitude of the target groups towards forest drainage as one of the measures to mitigate climate change.
{"title":"Evaluation of public attitude to forest drainage as climate change mitigation measure","authors":"S. Kaleja, A. Butlers","doi":"10.22616/erdev.2022.21.tf215","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf215","url":null,"abstract":"Nutrient-rich organic soils in forest lands are found mainly in naturally wet (Dryopterioso–caricosa and Filipendulosa) and drained (Oxalidosa turf.mel.) broadleaf dominated stands. These soils are one of the largest sources of greenhouse gas (GHG) emissions in Latvia, and according to the latest national GHG inventory report, GHG emissions from organic soils in Latvia in 2020 amounted to 6.1 million tons of CO2 eq. from the land use, land use change and forestry sector. High GHG emissions from organic soils also point to considerable opportunities for climate change mitigation through improved forest management practices. The results of the sociological survey presented in this paper are part of a larger study that aims to provide forest managers with decision support tools, including carbon sequestration and GHG emission factors and modeling tools for planning climate change mitigation measures when managing forest stands with fertile organic soils. Purpose of the sociological analysis is to gather information about the readiness of the target group to implement the results of the research in practice. To find out the opinion of the target group, the preconditions for the implementation of climate change mitigation measures in forests on fertile organic soils were identified and a survey of target groups was conducted, involving 509 respondents from several Latvian cities and rural areas. The results of the survey show the attitude of the target groups towards forest drainage as one of the measures to mitigate climate change.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115031321","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf226
J. Sanchaniya, S. Kanukuntla, Apsal Shereef, J. Kaneps
Computer modelling, analysis of the mechanical properties and development of a nano membrane from composite polyacrylonitrile (PAN) nanofiber mats were proposed in this study. The aim of this experiment is to deposit electrospun nanofibers in stationary and sliding substrates. Due to its ease of setup and ability to massproduce nanofiber mats, the electrospinning method has grown more popular than other nanofiber production technologies. The collector’s design, movement, and form can have an impact on the creation of nanofiber mats. A polyacrylonitrile solution (20 wt%) was developed and it was deposed in both sliding and stationary substrates to create mats. The results of the strength test of the polyacrylonitrile mat and composite polyacrylonitrile epoxy specimen were compared from both sliding and stationary substrates. The mechanical behaviour of the composite polyacrylonitrile nanofiber mats on the side panel of the motorbike was investigated. For this, mathematical modelling of the motorcycle side panel was examined in ANSYS, and the findings were compared to those of standard Acrylonitrile Butadiene Styrene (ABS) plastic. According to the results, PAN nanofiber composite surpasses ABS plastic in the yield strength, equivalent stress, and total deformation by 71.25%, 56.37% and 17.68%, respectively. Compared to standard ABS plastic, the PAN nanofiber composite exhibits superior mechanical characteristics, according to the static analysis on ANSYS. Consequently, the PAN nanofiber composite mat may be utilised to substitute ABS plastic in certain applications.
{"title":"Modelling and analysis of composite polyacrylonitrile nanofiber mats utilized to strengthen motorbike side panel","authors":"J. Sanchaniya, S. Kanukuntla, Apsal Shereef, J. Kaneps","doi":"10.22616/erdev.2022.21.tf226","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf226","url":null,"abstract":"Computer modelling, analysis of the mechanical properties and development of a nano membrane from composite polyacrylonitrile (PAN) nanofiber mats were proposed in this study. The aim of this experiment is to deposit electrospun nanofibers in stationary and sliding substrates. Due to its ease of setup and ability to massproduce nanofiber mats, the electrospinning method has grown more popular than other nanofiber production technologies. The collector’s design, movement, and form can have an impact on the creation of nanofiber mats. A polyacrylonitrile solution (20 wt%) was developed and it was deposed in both sliding and stationary substrates to create mats. The results of the strength test of the polyacrylonitrile mat and composite polyacrylonitrile epoxy specimen were compared from both sliding and stationary substrates. The mechanical behaviour of the composite polyacrylonitrile nanofiber mats on the side panel of the motorbike was investigated. For this, mathematical modelling of the motorcycle side panel was examined in ANSYS, and the findings were compared to those of standard Acrylonitrile Butadiene Styrene (ABS) plastic. According to the results, PAN nanofiber composite surpasses ABS plastic in the yield strength, equivalent stress, and total deformation by 71.25%, 56.37% and 17.68%, respectively. Compared to standard ABS plastic, the PAN nanofiber composite exhibits superior mechanical characteristics, according to the static analysis on ANSYS. Consequently, the PAN nanofiber composite mat may be utilised to substitute ABS plastic in certain applications.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116077930","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf263
V. Loveikin, V. Khmelovskyi, Vasyl Lukach, V. Achkevych
. The article is devoted to increasing the efficiency of the combined feed mixer in the process of feeding animals. The unit provides simultaneous grinding and mixing of the components of the feed ration, both in the forage area and during transportation, followed by their dosed distribution. With the simultaneous movement of the mobile feed mixer along the road and the operation of the screw mixer, dynamic forces arise, leading to oscillations of the unit in the transverse and longitudinal directions, relative to its axis. Compensation for these movements is carried out by the tires of the unit, which leads to their intensive wear. The results of studies that allow to identify and balance the dynamic loads that occur in the structural elements of the unit during the preparation and distribution of feed are presented. A dynamic and mathematical model of a mobile combined feed preparation unit has been developed. The resulting graphs show the dynamics of its work, the nature of the change in loads. An analysis of the graphs proves that when the mobile mixer moves, the tires and the mixer itself vibrate, which can lead to a loss of balance of the unit. To avoid such a phenomenon, it is proposed to reduce the unbalance of the rotor of the unit. To do this, it is proposed to improve the screw working body, which is made two-way with a phase shift of the screws. After the improvement, the maximum deflection angle of the bunker of the feed preparation unit is 0.034 rad. The speed of bending oscillations does not exceed ± 1 s -1 . The angular acceleration of the screw at the beginning has a jerk, then it reaches a steady motion with a constant nature of the change in oscillations within ± 6.3 s -2 . The justified rational design of the rotor in the form of a two-way conical auger makes it possible to increase the durability of the tires of the mobile combined feed preparation unit by 16-20%.
． 本文致力于提高联合饲料搅拌机在饲养动物过程中的效率。该装置在饲草区和运输过程中同时研磨和混合饲料的成分，然后进行剂量分配。随着移动进料搅拌机沿道路的同时运动和螺杆搅拌机的运行，产生动力，导致机组在横向和纵向上相对于其轴的振荡。对这些运动的补偿是由该单位的轮胎进行的，这导致了它们的严重磨损。研究的结果，允许识别和平衡的动态载荷，发生在该单位的结构元件在制备和分配饲料。建立了移动联合饲料制备装置的动态数学模型。生成的图形显示了其工作的动态，负载变化的性质。图的分析证明，当移动混合器移动时，轮胎和混合器本身会振动，这可能导致单元失去平衡。为了避免这种现象，建议减少机组转子的不平衡。为此，提出对螺杆工作体进行改进，使螺杆工作体双向相移。改进后进料制备装置料仓最大偏转角度为0.034 rad，弯曲振荡速度不超过±1 s -1。螺杆的角加速度在开始时有一个猛跳，然后在±6.3 s -2内达到一个稳定的运动，振荡变化具有恒定的性质。经合理设计，转子为双向锥形螺旋钻，可使移动式联合供料装置轮胎的耐久性提高16-20%。
{"title":"Improving efficiency of mobile combined feed mixer","authors":"V. Loveikin, V. Khmelovskyi, Vasyl Lukach, V. Achkevych","doi":"10.22616/erdev.2022.21.tf263","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf263","url":null,"abstract":". The article is devoted to increasing the efficiency of the combined feed mixer in the process of feeding animals. The unit provides simultaneous grinding and mixing of the components of the feed ration, both in the forage area and during transportation, followed by their dosed distribution. With the simultaneous movement of the mobile feed mixer along the road and the operation of the screw mixer, dynamic forces arise, leading to oscillations of the unit in the transverse and longitudinal directions, relative to its axis. Compensation for these movements is carried out by the tires of the unit, which leads to their intensive wear. The results of studies that allow to identify and balance the dynamic loads that occur in the structural elements of the unit during the preparation and distribution of feed are presented. A dynamic and mathematical model of a mobile combined feed preparation unit has been developed. The resulting graphs show the dynamics of its work, the nature of the change in loads. An analysis of the graphs proves that when the mobile mixer moves, the tires and the mixer itself vibrate, which can lead to a loss of balance of the unit. To avoid such a phenomenon, it is proposed to reduce the unbalance of the rotor of the unit. To do this, it is proposed to improve the screw working body, which is made two-way with a phase shift of the screws. After the improvement, the maximum deflection angle of the bunker of the feed preparation unit is 0.034 rad. The speed of bending oscillations does not exceed ± 1 s -1 . The angular acceleration of the screw at the beginning has a jerk, then it reaches a steady motion with a constant nature of the change in oscillations within ± 6.3 s -2 . The justified rational design of the rotor in the form of a two-way conical auger makes it possible to increase the durability of the tires of the mobile combined feed preparation unit by 16-20%.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125149939","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 : 2022-05-25DOI: 10.22616/erdev.2022.21.tf284
V. Bulgakov, I. Holovach, A. Aboltins, S. Ivanovs
The task of high-quality separation of the remains of tops from root crops is of great relevance. Experimental research of the new design of the cleaner to determine the quality indicators of its work was carried out by the developed and manufactured field experimental design. The purpose of the work is experimental studies of the quality indicators of the operation of the experimental cleaner and determination of the optimal modes of operation of cleaning the root crop heads from the remains of the tops and determination of the optimal modes of operation. It has been established that the rational values of the operating modes of the investigated cleaner, in which the most high-quality performance is possible when removing the remains of the tops from the surface of the root crop heads, are: – the speed of the translational movement of the twin-shaft cleaner – 0.8...1.2 m·s; – the angular speed of rotation of its drive shafts – 63...78 rad·s; – the installation height of the blades of the cleaner above the level of the soil surface – 0...2 cm.
{"title":"Investigation of quality indicators of operation of experimental root head cleaner from holm residues","authors":"V. Bulgakov, I. Holovach, A. Aboltins, S. Ivanovs","doi":"10.22616/erdev.2022.21.tf284","DOIUrl":"https://doi.org/10.22616/erdev.2022.21.tf284","url":null,"abstract":"The task of high-quality separation of the remains of tops from root crops is of great relevance. Experimental research of the new design of the cleaner to determine the quality indicators of its work was carried out by the developed and manufactured field experimental design. The purpose of the work is experimental studies of the quality indicators of the operation of the experimental cleaner and determination of the optimal modes of operation of cleaning the root crop heads from the remains of the tops and determination of the optimal modes of operation. It has been established that the rational values of the operating modes of the investigated cleaner, in which the most high-quality performance is possible when removing the remains of the tops from the surface of the root crop heads, are: – the speed of the translational movement of the twin-shaft cleaner – 0.8...1.2 m·s; – the angular speed of rotation of its drive shafts – 63...78 rad·s; – the installation height of the blades of the cleaner above the level of the soil surface – 0...2 cm.","PeriodicalId":244107,"journal":{"name":"21st International Scientific Conference Engineering for Rural Development Proceedings","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132274659","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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