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Numerical Modelling and Simulation of Sheet Metal Forming Process
1-6.Views:117Simulation and modelling of sheet metal forming process are well common today in different industries (automotive, aerospace) and several research centers regarding its huge impact for both on production and reliability of the lifecycle of the equipment, and the quality of the product. However, to obtain the best configuration possible with the inputs parameters to achieve high level of production and increasing the durability of the tools needs some extra methods for the optimization for this problem using mostly finite element method cooperated with iterative algorithms based on Artificial Neural Network (ANN) [1]. Whereas this research is focused on modelling of stamping process of stainless steel AISI 304 to investigate to formability of the material, and studying the influence of the friction factor on the quality of the product as well the energy required for each set configuration.
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Dynamic Tests on a Series Wound DC Motor. Simulation of the Braking of the Vehicle Driven by the Motor
15-20Views:72In the following we present the role and contribution of vehicle dynamics simulation to vehicle development in the University of Debrecen Faculty of Engineering. We present the input technical parameters which are necessary for the simulation of the series wound DC motor – which drives the vehicle – and also the procedure for their measurement together with the results of dynamic test measurements on the motor. The latest version of our vehicle dynamics simulation program –which is capable of the simulation of braking too – is also presented here.
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Algorithmization in Playful Way
105-111Views:77In the “Extending the Technical Researcher Capacity, Developing Research Services and Building a Knowledge Square in Engineering Education” sub-program of the EFOP-3.6.1-16-2016-00022 "Debrecen Venture Catapult Program" project a research group on engineering and innovation skills was founded. This team undertook to develop skills development workshops for high school students in connection with mathematics, physics, descriptive geometry and informatics topics. In this paper the "Algorithmization in playful way" workshop will be presented, where we develop the student's algorithmic skills by playing computer games.
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PDCA – How does the Organization Learn?
1-9Views:399An organisation (whether it is in the private or in the public sector)knows where it is headed, it has a vision. To achieve this vision the organisation can have a strategy beforehand or the vision can be the result of a continuously improving strategy.The strategy can be developed according to the earlier routines or in a totally new way. Many times failures help to find a solution better than the chain of successes. The lessons learned should inevitably be part of the following cycles otherwise the same issues rise again and again which finally ends in exasperation and giving up. When we create a learning process it is easier to focus on avoiding the obstacles than motivation. PDCA is a well-known method for it but what prevents us from applying it the proper way? What are the obstacles that prevent the organisation from developing through its learning processes?
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Neutral Inhomogeneity in Circular Cylinder Subjected to Axial Load on its Lateral Boundary
35-42Views:132In this paper we consider the problem of single circular elastic inhomogeneity embedded within a circular cylinder whose curved boundary surface is subjected to surface traction acting on axial direction. We investigate the displacement neutrality of the coupled system of host body and inclusion. Neutral inhomogeneity (inclusion) does not disturb the displacement, strain and stress fields in the host body. The deformation of the considered inhomogenneous cylinder is antiplane shear deformation.
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Enclosed Garden
25-33Views:141The archetype of the enclosed garden is the medieval hortus conclusus, which make the perfect type from the former types. The enclosed gardens of nowadays have developed from the hortus conclusus, which behave like a prism. Peter Zumthor's Serpentine Gallery Pavilion is the best example for the contemporary hortus conclusus. The purpose of our study to make a typological collection about contemporary enclosed gardens. The base of the typology is the borderline of the garden, the wall of the garden. We based the study of borderline to Dom Hans van der Laan's architectural theory and his monastery building in Vaals. We analyze the typology by six contemporary enclosed gardens from the simple wall to the building volume through the volumes of the wall. The openings of the walls can be the next way of our analysis.
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Torsion of Truncated Hollow Spherical Elastic Body
234-240Views:116This paper deals with the torsion of a body of rotation whose shape is a truncated hollow sphere. The material of the truncated hollow sphere is isotropic, homogeneous and linearly elastic. To solve the torsion problem, the theory of torsion of shafts of varying circular cross section is used, which is introduced by Michell and Föppl. Analytical solution is given for the shearing stresses and displacements. A numerical example illustrates the application of the presented solution. The results of the presented numerical example can be used as a benchmark problem to verify the accuracy of the results computed by finite element simulations.
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Development Opportunities of Health, Wellness and Sports Services in Medical Tourism Based on a Research Study
101-114Views:264The quality and quantity of additional services play an increasing role in the competitiveness of service providers in the tourism sector. In our research, our goal was to explore the service development possibilites of two different sites of a Northern Hungarian healthcare institution in the framework of a market research. In the field of services, we focused on different issues of health, wellness and sports services. Our research has shown that the availability of additional services and therapeutic recreational, sport or wellness services are important for patients as they can positively influence their quality of life and health status.
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Pure Bending of Homogenous Isotropic Elastic Curved Beam
67-75Views:39In this paper a detailed analysis is given for the pure bending problem of curved beams. The material of the curved beam is homogenous isotropic linearly elastic. The mantle of the curved beam is stress free and there is no body force on the curved beam. The plane of the curvature of the beam is the plane of symmetry for the whole beam. Paper gives the expressions of circumferential and radial normal stresses. A strength of material approach is used to derive the governing equations. A numerical example illustrates the application of the presented solutions.
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Review of Drive Systems Applied in Modern Vehicles
728-732Views:143In this publication we review the drive systems of modern electric and hybrid vehicles. We also discuss the various types of electric motors, batteries, as well as fuel cell systems applied in them. Furthermore, as an important part of hybrid vehicles is the internal combustion engine, we review the literature about the methods used to.
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Wind Tunnel Making in Practise
19-24Views:91In this paper, we examined the low speed wind-tunnels. Our goal is to construct an open flow system windtunnel that can be utilized in our measurements. To make such a wind-tunnel we needed to build a prototype and calibrated with the help of measurements. Than we determined the flow at the area of measurement. Finally results of the measurements satisfied our expectations. Although there is still much more in development that we would like to do based on the newly gained experience.
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An Analytical Solution for Static Problems of Cantilever Curved Beams with Variable Cross Sections
226-233Views:120This paper gives an analytical method to obtain the deformation of a cantilever curved beam. The curved beam considered has circular centre line and the thickness of the cross section in radial direction depends on the circumferential coordinate. The kinematics of the Euler-Bernoulli beam model is used to formulate of governing equations. The curved homogeneous and isotropic elastic beam is fixed at the one of the end cross section and on the other end cross section is subjected to concentrated forces and a couple. A numerical example illustrates the applications of the derived formulae.
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Risk Management Requirements in Management Systems
314-323Views:228The management system standards published by the International Organization for Standardization (ISO) contain requirements related to risk management activities. The objective of the current research is to identify the relevant risk management requirements and creating the integral risk assessment method in Quality Management System (QMS), Environmental Management System (EMS) and Information Security Management System (ISMS). In my research I prepared a risk management requirement matrix, which can help the organisations to understand the relevant requirements of the three examined standards. The developed integrated risk assessment method allows the application of a common risk assessment table concerning the three standards.
