Academic literature on the topic 'Ohýbanie'

The Diploma Thesis deals with the technology of manufacturing the titan exhaust for a two-stroke engine. It includes a description of the manufacturing procedure. It analyzes in detail the forming issue of sheet-metal parts in order to eliminate the spring-back effect, and it finds possible solutions to this problem.

Master’s thesis fully fashioned within the frame of engineer study M-STM Manufacturing Technology and Management in Industry put literary study of bending technology. In the work is concept manufacture sidewall car for Fiat Ducato Valnik. Compare different technologies of manufacture press breaking, welding and casting. For the choose technology contains selection material, calculation parameters for project machinery and tools including of techno economic valorization.

The aim of the thesis is the investigation of fracture-mechanics parameters on specimens made of quasi-brittle materials. The principles of two-parameter fracture mechanics are used. Couple of numerical simulations were done and their outputs are used for two main analysed specimen geometries. For simulations the finite element method software ANSYS is used. In the first part, the thesis focuses on bended specimens. The influence of different geometric parameters on fracture mechanics behaviour of cracked specimen is investigated. For model calibration the outputs of other authors are used. In the second part the specimens for modified compact-tension test (CT test) are analysed. Similar to the first part, the influence of geometric parameters of the specimen (in this case, the specimen size) on fracture mechanics parameters were investigated. The modified CT test was derived from CT test which is commonly used for metal materials testing as the suitable geometry for cement-based composite materials testing. The outputs of both parts are calibration polynomials, which are expressions obtained for different specimen geometries, giving the value of fracture mechanics parameter as the function of specimen geometry. As the example, calibration curves are used to obtain fracture toughness of tested material using the outputs from recent experiment.

This diploma thesis has been elaborated within the Master's study of department 2307 that submits a production hooped component. The material of the component is steel ČSN 15 130. Single – part as far as small–lot production. On the basis of the literary study problems bend tubing was sugested the method: rotary draw bending. For this method was sugested mechanical bending machine with mandrel support arm, for bending with mandrel and exact bends in three – dimensional.

Diploma thesis discusses and summarizes the problematic how ovality effects durability of bended tubes. The work presents an approach to the solution, the experiments concerning change of ovality, changes in the thickness of the distorted cross-section. Final results represent connection between ovality and durability.

The aim of this thesis is to solve the problem from the industry, which consists of the design of workplace for bending parts using industrial robots and manipulators, appreciation and mutual comparison of the proposed alternates of solution of the problem, the choice of most of them, and the subsequent development and economic assessment. An integral part of work is also a brief summary of the issue of technology bending parts, automation and technological design.

The project was influenced by several factors, the most significant being the water element, which is very important for Judaism and primarily symbolizes ritual purification. The concept divides the area in the axis of Nešverova Street, making an orthogonal block, further separated according to the functions, and public area under which a part of the underground parking is located. The block consists of the synagogue, museum, restaurant and administrative building of the Jewish community with a library. From the architectural standpoint, the project was significantly influenced by the stained glass window of the burned former synagogue, which was, in more modern spirit, imprinted into the museum’s facade. This window becomes a dominant element of the facade, because it pervades all three floors, so the rest of the building is not divided and for lighting of the exhibition areas skylights and artificial light are used. Significance of this concept is intensified by the fact that the visitor is dragged inside, right to the front of the synagogue, to which a ramp leads. There is an importance of the mentioned water element in the design of the synagogue. The whole concept is approached organically and was inspired by a drop of water falling down on the surface. The synagogue literally grows from a body of water which surrounds it and creates a crystalline element. The idea is amplified by the water wall which runs from the passageway all around the synagogue. Part of the administrative building and the restaurant are designed in more simple style, but the idea of arch is reflected in the moulding, which was designed intentionally with reference to the surrounding buildings. The rest of the site served as a small park and this function has been maintained. A significant element in this part of the site is Theresian gate, which remained from the 18th century fortification. The park was supplemented by an artificial bank, which covers the entrance to underground parking a

The diploma thesis deals with the study of bent FRP reinforcements with the main focus on the methods of production of bent FRP reinforcement, examples of their application in structures. The work also mentions the effects of aggressive environments on the durability of FRP. In the practical part, a search of the possibilities of testing the properties of bent FRP reinforcement. Subsequently, an experiment is designed and performed to monitor changes in the properties of straight and bent FRP reinforcement exposed to the alkaline environment and water at 20 °C and 40 °C. Finally, the evaluation of changes in mechanical properties and observation of reinforcements using optical and scanning electron microscopy is performed.

In this thesis we study the possibilities of designing an application to design a production line for bending of profile sheet. We discuss step by step the process of profile design, flower pattern, production line benches and the rollers, that will shape the metal sheet into the final form. We discuss the algorithms used to create different types of points placed in the contour of roller to improve the production of metal profile. As result of our work software was developed, which is able to fully support the whole process of production and it is used in practice.