|
|
Stress-deformation analysis of the indoor basketball construction
Kubíček, Daniel ; Kovář, Jaroslav (referee) ; Fuis, Vladimír (advisor)
The topic of this thesis is stress-strain analysis of a basketball structure in a gymnasium. This structure is divided into two parts. One part is modeled as a spatial bar system. The other part is modeled as a plane bar system. The first part of the paper deals with the research on the use of bar systems in sports. This is followed by the development of analytical computational models of the spatial and plane bar systems. These models are then used to calculate three different loading conditions. Subsequently, the models are developed for numerical solution. In the last part of this work, the analytical solution is verified by the numerical solution.
|
|
|
Analysis of deformation of control arm of turbocharger mechanism
Dvořák, Martin ; Vobejda, Radek (referee) ; Šebek, František (advisor)
This thesis is of a development character and foremostly focused on operation of a control arm inside of a turbocharger. The thesis is divided into two crucial parts. The first part is a theoretical introduction where general context, regarding function of turbochargers, is processed. The second one is the deformation analysis of control arm of turbocharger mechanism on which the whole thesis is based. The last part is final optimization. The results show that the deformation is similar when spots with low stress are removed. This fact is a key factor to achieve mass reduction for any part when the deformation stays the same.
|
|
|
Development of the HSBT tensile impact test equipment
Pech, Vladimír ; Harant, Martin (referee) ; Jopek, Miroslav (advisor)
The thesis is focused on the design of a device for tensile impact tests based on the Hopkinson's split bar principle. The theoretical part describes the behaviour of materials under dynamic loading conditions and a description of the testing methods used. The thesis describes in detail the Hopkinson tensile test and different design variants of this device, including their principle, advantages and disadvantages. In the practical part of the thesis is designed the testing device and the individual parts of the device are analyzed. For the key parts, the selection of materials and geometric parameters is described to ensure the proper functionality of the device. The constructed device is tested by samples made from PETG material. Capacitive sensors and strain gauges were used to record data during the test to verify the correct functionality of the device.
|
|
|
Static analysis of the supporting cables of the roof structure
Uhrová, Kristina ; Lang, Rostislav (referee) ; Vlk, Zbyněk (advisor)
This bachelor‘s thesis deals with the static analysis of the supporting cables of a roof structure. The first part of the thesis discusses the issues related to cable roof structures and the static influence of the main supporting element – the cable. These theoretical insights are then applied in the practical part of the thesis, where the static analysis of the supporting cable is conducted. The manual calculation is performed using three different approaches: the catenary under distributed loads, parabolic chain line, and the rope equation. The objective of the thesis is to determine the initial shape of the cable so that, upon completion of the construction, the cable settles into the desired shape. The manual calculations are subsequently compared with results from the computational software RFEM.
|
|
|
The Body (Intimity)
Kojetská, Monika ; Pepe, Dita (referee) ; Hlavenka, Tomáš (advisor)
With this set I am following my previous work in which I was occupying with woman body. I catch body in intimate moments – but I encode it, so it is almost not obvious. I use light irony and exaggeration in my pictures. In this set I work with woman body as a object of voyer, who observes the woman with a peephole, lense, field glass or camera. But I keep it all in abstract and stylized position. I work with code, thanks to which we at first perceive the picture as colourful and shaped painting forms that gradually show womans body. I use bigger ammount of abstract, when forms of the body balance at the edge between figural and abstract. I enjoy the moment when there is not everything visible at the first sight in the picture. I want the viewer to look for the body, observe it and explore it. I do not aim for catching the beauty of the body or is real visual shape. I work with light irony of voyeur looks by using some deformations of the body parts.
|
|
|
Measuring RLC on the components of electrical circuits
Pokorný, Marek ; Vítek, Ondřej (referee) ; Veselka, František (advisor)
Aim those work is inform numerator about possibilities and features gauging apparatus 7600 Precision LCR undergrounds and further then about metering paramers R,L,C on components electric standing ,especially then on sliding contacts,with which this work acquaint and how are their characteristics important for correct functionality electrical machine whereof are site rated power.Warp work largely start from manual to apparatus 7600 Precision LCR undergrounds and further then out publication sliding contact in electrical machine - doc. Veselka, doc. Chmelik.
|
|
|
Analysis of Mechanical Stress during Short Circuit in an Air-Insulated MV Switchgear
Bártů, Jan ; Bajánek, Tomáš (referee) ; Orságová, Jaroslava (advisor)
This Master thesis is based on problems of force effects of the magnetic field of short-circuit current. Firstly, I analysed the force action of the three phase busbars during the three-pole short circuit. The analysis was performed in the Ansys Maxwell program and I verified the correctness of the analysis by numerical calculation. The second practical part was executed for ABB company. The main task was to analyse the force effects of the short-circuit current in the HV switchgear with focusing on the arms and contact system of the circuit breaker. The simulations of the following configurations were performed in more details: three configurations of the simplified VD4 circuit breaker, two types of VD4 circuit-breaker contact systems and a linear circuit breaker configuration model. The objective was to calculate the forces acting on the current path of the arms and contact system of the VD4 circuit breaker during the three-phase short-circuit and to simulate the effects of forces on these current parts. For modelling of individual assemblies, calculations and simulations I used: SolidWorks 2014, Ansys Maxwell 16.0 and Ansys Workbench 14.5 programs. With SolidWorks 2014 3D CAD software were modelled simplified assemblies of circuit breakers and contact systems. These systems were imported into the Ansys Maxwell software, where the force effects of the magnetic field of the short-circuit current were calculated. In Ansys Workbench programme was simulated the effect of forces on the current circuit breakers. Moreover, the final deformations of the materials (with respect to the mechanical properties of the structure) were plotted. The analysis of force effects of the magnetic field was performed for the specified static short - circuit current value.
|
|
|
Stress-strain analysis of a crane arm
Mora, Lukáš ; Halabuk, Dávid (referee) ; Fuis, Vladimír (advisor)
The content of this bachelor’s work is a summarization of types of tower cranes and subsequent stress-strain analysis of the crane arm of the crane type 150EC-B8 Litronic located on the Šumavská street in Brno. Analytical stress-strain analysis is calculated with equations of equilibrium using joint method in various types of loading of the construction with MAPLE software. Numerical calculation is executed on 3D model of the construction in software ANSYS. The aim of this bachelor work is the verification of the correctness and comparison results of analytic calculation with numeric calculation and evaluation of the results from a limit states and deformation standpoint.
|
|
|
Scene Analysis Based on the 2D Images
Hejtmánek, Martin ; Drahanský, Martin (referee) ; Orság, Filip (advisor)
This thesis deals with an object surface analysis in a simple scene represented by two-dimensional raster image. It summarizes the most common methods used within this branch of information technology and explains both their advantages and drawbacks. It introduces the design of an surface profile analysis algorithm based on the lighting analysis using knowledge and experiences from previous work. It contains a detailed description of the implemented algorithm and discusses the experimental results. It also brings up options for the possible enhancement of the projected algorithm.
|
|
| |
guest ::
