EngRN: Mechanical Design (Topic)最新文献

{"title":"Devising a Procedure for Calculating the Designed Strength of a Kingpin Type Load Carrying System for an Articulated Tractor Container Carrier","authors":"Oleg Beihul, D. Grischenko, V. Beihul, A. Lepetova, D. Chasov, B. Kolyada","doi":"10.15587/1729-4061.2020.214133","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.214133","url":null,"abstract":"The development of a methodology for calculating the designed strength of an unconventional kingpin-type load-carrying system for the articulated tractor container carrier on pneumatic wheels is an important and relevant task due to the unique layout of a given specialized vehicle. The purpose of this work is to devise a procedure for calculating the designed strength of a clip load-carrying system for the articulated tractor container carrier on pneumatic wheels, aimed at building an improved structure with rational metal consumption. The results of the theoretical and experimental studies have determined the most common estimation cases. They include the movement over the technological roads' irregularities along the horizontal section of the road ‒ an estimation case of the semi-trailer frame girders. climbing a high curb at an angle was also considered as an estimation case for the semi-trailer frame girders and cross member. Starting a tractor container carrier forward with an insurmountable obstacle in front of the semi-trailer's wheels was analyzed as an estimation case for the cross member of the frame and the suspension attachment units in the semi-trailer of a tractor container carrier. The result of the reported theoretical and experimental research is the determined load that acts on one cradle structure of the load-carrying system; it forms the torsional rigidity of the frame structure. Underlying the derived mathematical model for each case are the torsional moments and inertia moments that act on the structural elements of the girder in different planes. The mathematical models have been built on the basis of strength conditions for each estimation case and thus form a mathematical formula for determining the wall thickness of the frame girder. The mathematical notation demonstrates the degree of advantage of climbing a high curb at an angle over other estimation cases for the semitrailer frame member and girders. The estimation parameters underlying the mathematical model are meant to prevent the breaking and torsion of the semi-trailer frame in a tractor container carrier","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83401018","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":"Fractal and Metasurface Based Low Profile Circularly Polarized Microstrip Antenna","authors":"Shashi Kant Pandey, G. P. Pandey, P. M. Sarun","doi":"10.2139/ssrn.3565324","DOIUrl":"https://doi.org/10.2139/ssrn.3565324","url":null,"abstract":"Design of a low-profile and compact circularly polarized microstrip antenna is proposed and investigated based on fractal radiator and high impedance metasurface. Circular polarization and size reduction is achieved by embedding fractal tree like structures at the corners of a square patch. High impedance metasurface is placed at the half of the total height of the FR4 substrate, to enhance the gain of the proposed antenna. Study revealed that the antenna is very compact with layout of 0. 3λ₀ x 0.3 λ₀ x 0 .012 λ₀ at 2.3 GHz, global bandwidth (reflection coefficient, axial ratio and gain bandwidth) of 16 MHz (2.293 GHz - 2.309 GHz) and stable gain of about 2.5 dBic. Proposed Design is single feed and small sized, therefore can be find applications in many portable/IOT wireless communication systems.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86441209","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":"Influence of Vehicle Inspection Tests on Crashworthiness of School Bus in Nairobi County, Kenya","authors":"Bosire Thomas M, Dr Eng. Herbert Dimo","doi":"10.2139/ssrn.3517664","DOIUrl":"https://doi.org/10.2139/ssrn.3517664","url":null,"abstract":"The vehicle structure, designs and materials on school bus body crashworthiness as regulated by different government agencies in bus body building firms was the topic under research study. In Kenya, thousands of vehicles are involved in vehicle collisions or crashes every year resulting in fatal accidents and severe injuries to the passengers. The specific objective was the influence of vehicle inspection testson crashworthiness of school bus in Nairobi City County. This study adopted Dym’s, Suh’s Axiomatic theory. The pragmatic paradigm and explanatory research design were used. The target population was 1500 respondents from bus body building firms and government regulatory institutions. The sample size was 315 respondents. Questionnaires, interview schedules and observation were data collection instruments. Expert judgment was used to establish validity of the questionnaires. Cronbach’s Alpha Coefficient was used to determine the reliability of the research instrument.  The data collected was analyzed using descriptive and inferential analysis with the aid of SPSS V22 software. The coefficient of determination (R squared) of .206 showing that 20.6% of the variation in crashworthiness of a bus can be explained by vehicle inspection tests. There was a positive significant influence of vehicle inspection tests on crashworthiness of a bus (β=0.396 and p <0.05). The study concluded that the vehicle inspection tests had a significant influence on the crashworthiness of school bus.  The management of school bus body construction companies need to conduct all the terminal test needed before releasing the vehicle in order to enhance crashworthiness of a bus. The Transport authority should examine and check the mandatory requirements and periodically amend them in accordance with the safety, engineering and ecological standardization.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77058539","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":"Design and Analysis of Hydraulic Disc Brakes","authors":"Anjali Pillay, Shubham Dhanale","doi":"10.2139/ssrn.3419636","DOIUrl":"https://doi.org/10.2139/ssrn.3419636","url":null,"abstract":"The braking system has to provide enough braking force to completely lock the wheels at the end of a specified acceleration run. The braking system was designed by determining parameters necessary to produce a given deceleration. This particular braking system was designed for an onion harvester which is the theme for SAE-INDIA TIFAN 2019 competition.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86299463","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":"Design and Analysis of Leaf Spring Suspension System","authors":"Shubham Dhanale, Anjali Pillay","doi":"10.2139/ssrn.3419639","DOIUrl":"https://doi.org/10.2139/ssrn.3419639","url":null,"abstract":"Suspensions are used in vehicles for a comfortable as well as a shock and vibration free ride. Leaf springs are proven to be effective in case of heavy and cyclic loads. In this particular paper the leaf spring suspension system is designed for a heavy weighted onion harvester which is a theme of SAE - INDIA TIFAN 2019 competition. The aim is to design an efficient and compact suspension system which will prevent the fatigue failure of vehicle and which will ultimately bear the load.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87760512","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":"Time Factory","authors":"R. Petrescu","doi":"10.2139/ssrn.3417308","DOIUrl":"https://doi.org/10.2139/ssrn.3417308","url":null,"abstract":"Have you asked yourself how you will look over 15 years? At the Bosch factory in Jucu, we saw a time machine that can help you to travel for 15 years in the future. And the technologies used seem to have come from the reality of the next decades. This \"time machine\" is, in fact, part of Bosch's Engineering, Quality and Validation Laboratory (EQV). It's the test room, where the products are \"aged\" for 15 years to analyze how they can withstand the passage of time and the action of natural phenomena - storm, equatorial rain or frost. The EQV lab concept was created from the idea of synergy between R&amp;D departments and production, a configuration that can provide a holistic view of Bosch products that are being analyzed from the initial development phase of the product until the product returns to the laboratory to investigate possible defects that occurred during their use. \"We test the product's resistance to equatorial rain, for example. If it is an electronic component mounted on a machine that will go to South America and we know that there is very high humidity in that area, here we simulate the aging of samples in a more accelerated way, \"explains Grasim Robert, head of the analysis group of the EQV lab. But they are not the only tests the products are subjected to. The water resistance of the samples is also done with a very strong 6 bar jet and the water has a force similar to that coming from a fire hose. Other tests check for resistance to different types of dust - for example, Arizona powder is more abrasive and worn plastic components, while ash-containing dust can lead to short-circuits - or saline mist, which activates corrosion mechanisms. In the climatic rooms, explains Grasim Robert, there are several parameters: Time, temperature and humidity. Depending on ISO standards and customer requirements, the test team varies these three physical parameters. There are tests that last for 10-12 months. In other words, a 15-year journey in the future still takes a few months, but taking into account the pace with which technology evolves, it is obvious that this duration is reduced.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84907699","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":"Innovative Layout of Gears for the Optimum Design of Gearbox of a Levelling Machine","authors":"Karan Gunti, Sachin C. Kulkarni, Harshil Angre, Vikas S Kamble, Sachin Barve, D. Shukla","doi":"10.2139/ssrn.3101361","DOIUrl":"https://doi.org/10.2139/ssrn.3101361","url":null,"abstract":"This paper delineates the layout and the detailed design of a single input multiple output (SIMO) gearbox for a strip leveller machine. The leveller machine is used to flatten out and level the coiled sheets for finding applications in various industries. Roller leveling is essentially a bending process. The out of flat part, sheet or plate is deformed by a series of alternating bends created by passing the sheet, or plate between upper and lower sets of leveling rollers. The power is transmitted to the rollers from the motor via a gearbox and the outputs of the gearbox are connected to the rollers through spindle shafts with the help of universal joints. The large angle of these universal joints affects its efficiency and thereby decreases its life. Hence this angle is to be reduced and one way of achieving this is by compacting the gearbox. The size is drastically reduced by constructing the layout of the gears in such a way, that the space between the outer surface of the gear and the shaft is utilized by arranging the gears in several lateral and longitudinal planes. The main aim of the paper is to describe this innovative layout and its design verification.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73852656","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":"Something About the Balancing of Thermal Motors","authors":"R. Aversa, R. Petrescu, B. Akash, R. Bucinell, J. Corchado, F. Berto, M. Mirsayar, Guanying Chen, Shuhui Li, A. Apicella, F. Petrescu","doi":"10.3844/AJEASSP.2017.200.217","DOIUrl":"https://doi.org/10.3844/AJEASSP.2017.200.217","url":null,"abstract":"Internal combustion engines in line (regardless of whether the work in four-stroke engines and two-stroke engines Otto cycle engines, diesel and Lenoir) are, in general, the most used. Their problem of balancing is extremely important for their operation is correct. There are two possible types of balancing: Static and dynamic balance. The total static to make sure that the sum of the forces of inertia of a mechanism to be zero. There are also a static balance partial. Dynamic balance means to cancel all the moments (load) inertia of the mechanism. A way of the design of an engine in a straight line is that the difference between the crank 180 [°] or 120 [°]. A different type of construction of the engine is the engine with the cylinders in the opposite line, called \"cylinder sportsmen\". In this type of engine (regardless of their position, which is most often vertical) for engines with two cylinders, one has a static balance total and an imbalance in the dynamic. Similar to the model of the earth concentrated in rotation movement are resolved and load balancing shafts rotating parts. An important way to reduce losses of heat engines is how to achieve a better balance. The methods may be used in equal measure and on engines with external combustion, type Stirling or Watt.","PeriodicalId":11897,"journal":{"name":"EngRN: Mechanical Design (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81507940","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}