Current Issue : April - June Volume : 2019 Issue Number : 2 Articles : 5 Articles
The forming of sheet metal in a desired and attractive shape is a process that\nrequires an understanding of materials, mechanics and manufacturing principles.\nManufacturing a consistent sheet metal component is challenging due\nto the nonlinear interactions of various material and process parameters. One\nof the major issues in the manufacturing of inconsistent sheet metal parts is\nspringback. Springback is the elastic strain recovery in the material after the\ntooling is removed and the final shape of the product depends on the springback\namount formed. In this study according to the result of simulation the\ninverted compensation method is adopted to optimize die surface design. Similarly,\nto predict and compensate the springback error this study presented\nan analytical approach of forming process in a stepwise modification of the\nautomobile roof panel. Moreover, based on Dynaform and finite element\nanalysis of sheet metal stamping simulation the sprinback in automobile roof\npanel is predicted and compensated. In addition, this study examines the significant\nrequirements of the sheet metal forming precision of automobile\nbody and the simulation of forming, stamping and springback of automobile\nroof panel is carried out, and the result of simulation also is analyzed....
In this study, it is aimed to determine the ranking importance levels of the\nstages to be taken into consideration for new product development on a\nglobal scale in the automotive design process. New product design activity and\nstage-gate process differences between local automotive firms (serial production\nfactory and stage-gate department in Turkey) and global automotive companies\n(serial production factory and stage-gate department in Turkey) are\nexamined comparatively in the research area. In the automotive industry,\nwhich has been developing for a century, the question of how the local company\nproducts operating in the last sixty years have not been able to spread\nglobally or how to develop global products is the background question of the\nresearch. For this purpose, one on one interviews were held with the managers\nof 3 national and 3 international automotive companies, who worked in the\nsame region and who had previously designed a new vehicle, with design and\nproduct development departments. According to the data obtained by the AHP\n(Analytic Hierarchy Process) in the automotive design process, the importance\nof the criteria that should be taken into account for global product development\nhas revealed. According to the results of the study, it was found that design\nvalidation stages were the most important globalization criterion in automotive\ndesign process as a new study area. In the comprehensive survey of the study,\nno other publication has been encountered to measure or evaluate the stages in\nthe automotive design and new product development process in other sectors,\nincluding the vehicle industry. As in every industry sector, in the automotive\nindustry, with the new product companies provide market development or\ncompetitive advantage. The new product is the life channel of a company and\nin the realization of this new vehicle; the disciplines of the automotive industry\nare formed by a hundred years of experience....
Public transportation (PT) systems suffer from disutility compared to private transportation\ndue to the inability to provide passengers with a door-to-door service, referred to as the first/last\nmile problem. Personal mobility devices (PMDs) are thought to improve PT service quality by closing\nthis first/last mile gap. However, current PMDs are generally driven manually by the rider and\nrequire a learning phase for safe vehicle operation. Additionally, most PMDs require a standing\nriding position and are not easily accessible to elderly people or persons with disabilities. In this\npaper, the concept of an autonomously operating mobility device is introduced. The visionary\nconcept is designed as an on-demand transportation service which transports people for short to\nmedium distances and increases the accessibility to public transport. The device is envisioned to be\noperated as a larger fleet and does not belong to an individual person. The vehicle features an electric\npowertrain and a one-axle self-balancing design with a small footprint. It provides one seat for a\npassenger and a tilt mechanism that is designed to improve the ride comfort and safety at horizontal\ncurves. An affordable 3D-camera system is used for autonomous localization and navigation. For the\nevaluation and demonstration of the concept, a functional prototype is implemented....
Motor end cover mounting fracture is a problem recently encountered by novel pure electric\nvehicles. Regarding the study of the traditional vehicle engine mount bracket and on the basis of\nthe methods of design and optimisation available, we have analysed and optimised the pure electric\nvehicle end cover mount system. Multi-body dynamic software and finite element software have\nbeen combined. First, we highlight the motor end cover mount bracket fracture engineering problems,\nanalyse the factors that may produce fracture, and propose solutions. By using CATIA software to\nestablish a 3D model of the power train mount system, we imported it into ADAMS multi-body\ndynamic software, conducted 26 condition analysis, obtained five ultimate load conditions, and laid\nthe foundations for subsequent analysis. Next, a mount and shell system was established by the\nANSYS finite element method, and modal, strength, and fatigue analyses were performed on the end\ncover mount. We found that the reason for fracture lies in the intensity of the end cover mount joint,\nwhich leads to the safety factor too small and the fatigue life not being up to standard. The main\ngoal was to increase the strength of the cover mount junction, stiffness, safety coefficient, and fatigue\nlife. With this aim, a topology optimisation was conducted to improve the motor end cover. A 3D\nprototype was designed accordingly. Finally, stiffness, strength, modal, and fatigue were simulated.\nOur simulation results were as follows. The motor end cover suspension stiffness increases by 20%,\nthe modal frequency increases by 2.3%, the quality increases by 3%, the biggest deformation decreases\nby 52%, the maximum stress decreases by 28%, the minimum safety factor increases by 40%, and life\nexpectancy increases 50-fold. The results from sample and vehicle tests highlight that the component\nfracture problem has been successfully solved and the fatigue life dramatically improved....
This study was compiled by scientific research publication sheds light on the\nhistorical development of the Turkish automotive industry has been compiled\nfor the period of conservation of the original value. The decline in industrial\ndevelopment in the last century of the Ottomans is directly proportional to\nthe progress of Europe in the last century. This decline in the countryâ??s\npre-republican industry has surpassed to the rise with the subsequent European\ncustoms union agreements. This rise, which is focused on the defense\nindustry in the pre-republican automotive sector, has resulted in successive\nprivate sector expansion with regional agreements. Turkeyâ??s automotive industry\nrise with the European customs union agreement, and alternative regional\nagreements, showed stronger growth. The time of establishment and\nexpansion of the world automotive industry coincides with the last days of\nthe pre-republican Ottoman Empire in our country. Therefore, both the development\nof this sector, as well as information related to transportation in\nthis industry has been experiencing difficulties. Ottoman archives transcription\nstudies state institute of statistics by ten years period the last period statistically.\nBut itâ??s quite old Ottoman archives of Latin translations in the compilation\nof this data with their letter pretty much will take time....
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