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Verification Tightness of Headlamp
Maule, Jiří ; Pernikář, Jiří (referee) ; Osička, Karel (advisor)
The task of my work is to describe and analyse tightness control of front headlights in automotive industry. This work is concerned with theoretical indi-cative allocation according to the light source, development and contruction of headlights in preamble. There is shown the way of disclosing the outflow pres-sure area at loose headlight in next part of this work. It defines the most proba-bly caused reason of untightness with help of Ishikawov diagram. There is also made evaluation of measured values and determined the main cause of un-tightness. At the end there are shown possibilities of statistic´s evaluation of measured values and made changes necesarry for untightness elimination.
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Structural design of the high-pressure separator with focus on the flange connection
Šmarda, Radek ; Klučka, Ivan (referee) ; Lošák, Pavel (advisor)
The first part of the diploma thesis deals with research in the field of design of process apparatuses. The research continues describing the function, division and main parts of separators. The research part ends with a more detail overview of flange connections. The second part deals with the design and control calculations of the separator using ČSN EN 13445-3 with tightness-strength calculation of the main flange join using ČSN EN 1591-1. At the end of the second part, partial calculations are performed using finite element method in the ANSYS Workbench R2 program, which aim to verify the required tightness of the joint and describe the effect of the bolts tightening procedure on the gasket.
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Tightness evaluation of gasketed tubesheet
Trubač, Daniel ; Pernica, Marek (referee) ; Létal, Tomáš (advisor)
This master thesis focuses on the issue of tightness evaluation of gasketed tubesheet in U tube exchangers, which meets strength requirements of ČSN EN 13 445-3 and ČSN EN 1591-1 standards. It deals with the forces acting on the gasket when measuring the effects acting on the entire heat exchanger. A separate part is devoted to the calculation of the heat profile in the heat exchanger and verification of the strength of the heat exchanger. The final part introduces model of a heat exchanger, on which a possible approach to solving the tightness of the tubesheet in heat exchangers is presented. In thesis temperature field evaluation was conducted, the results of which were used in stress strain analysis, in order to obtain gasket contact pressure. Extreme gasket contact pressures were used to estimate leak rate limits.
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Modelling of pressure equipment bolted flange connections
Kolátor, Matyáš ; Pernica, Marek (referee) ; Létal, Tomáš (advisor)
The bachelor thesis deals with computational modeling of flange connections. Due to its separability, bolted flange connections are a frequently used in piping systems or pressure vessels. For the right functionality of the connection, it is necessary to ensure the required tightness. In order to be able to describe the tightness, it is necessary to know the stresses and deformations in all parts of the connection. These days, standard calculation methods are at a high level of accuracy, on the other hand, in order to achieve this accuracy, they have to follow a lot of corrections, in which the original model based on the strength of material theory should be lost. The aim of bachelor thesis is to create computational models based on the strength of materials theory. Computational models are created to illustrate the application of strength of materials theory. At the end of the thesis, the results using several models will be summarized and compared.
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Evaluation of the flange joints calculations approaches
Jeník, Ivan ; Chlud, Michal (referee) ; Hůlka, Jiří (advisor)
This bachelor´s thesis deals with the design and assessment of flange joints with gasket. The first part defines term flange joint and its load. It surveys and assesses the possible alternatives of design solution. Mentioned is the issue of bolt connections with pretension, including force relations in the joint, determination rigidity of parts and their strength. In addition, analysis of the causes of bolts failures and their removal, methods of creating pretension. It gives an overview of the most widely used types of gaskets, their properties, application and definition of characteristic values of gaskets and their determination according to ČSN EN 13 555. Another section deals with the design process of flange joints, standards for the design, desired outputs and assesses analytical and numerical approach. Computational program was created in MS Excel 2007 for design calculation of flange joints according to ČSN EN 1591-1. Verification of the results was performed with calculation of identical models using finite element method (FEM) in ANSYS Workbench 14.0. Errors in standards formulas were submitted. In conclusion, the results obtained analytically and by FEM were assessed for a specific load conditions of gate valve DN 300. Camprofile (grooved) gasket with nonlinear material model was used.
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A New Design for Sealing Headlamp Adjusting Screws
Lysa, Bohuslav ; Mrázek, Dušan (referee) ; Samek, František (advisor)
The bachelor thesis covers several issues connected with the sealing of headlamp adjusting screw. The thesis includes analysis of the O-ring fastening and analysis of the fixation adjusting screw in functional position. On the basis of the analyses a new design of O-ring fastening, a new design of the adjusting screw fixation are proposed. Finite Elements Method in SimDesigner software using 3D modeling capabilities provided by Catia V5 were used for calculations and simulations in selected parts of the analysis. The feasibility study regarding adjustments of the existing casting form of the adjusting screw is included in the thesis.
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The automated line for testing tank tightness
Kropáč, Jan ; Prášek, Radovan (referee) ; Zeizinger, Lukáš (advisor)
This diploma thesis deals with the design of a production line segment, which is supposed to do automated testing of the heat pump segment tightness. It discusses different kinds of handling and testing problems. The result is choice of the most suitable concepts, which are designed and then processed into a 3D model. Simulations are created for selected parts to optimize them. At the end, the implementation of the project is briefly described. Part of the work is drawing documentation and a pneumatic diagram of the machine.
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Modelling of pressure equipment bolted flange connections
Kolátor, Matyáš ; Pernica, Marek (referee) ; Létal, Tomáš (advisor)
The bachelor thesis deals with computational modeling of flange connections. Due to its separability, bolted flange connections are a frequently used in piping systems or pressure vessels. For the right functionality of the connection, it is necessary to ensure the required tightness. In order to be able to describe the tightness, it is necessary to know the stresses and deformations in all parts of the connection. These days, standard calculation methods are at a high level of accuracy, on the other hand, in order to achieve this accuracy, they have to follow a lot of corrections, in which the original model based on the strength of material theory should be lost. The aim of bachelor thesis is to create computational models based on the strength of materials theory. Computational models are created to illustrate the application of strength of materials theory. At the end of the thesis, the results using several models will be summarized and compared.
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