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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
301

Návrh vřeteníku soustruhu / Design of spindle for lathe

Sovadina, František January 2021 (has links)
The thesis deals with the design and construction of headstocks of a turning centre. The aim is to design a spindle with an output of 20 kW and a maximum speed of 5000 1/min. The research part of the thesis is focused on the description of the basic parameters of the headstock and turning centres needed for the construction of the headstock and contains an analysis of the available spindles on the market. The next part of the thesis deals with the selection and calculation of cutting conditions and the necessary parameters. Analytical calculations are then verified using FEM analysis. At the end of the thesis, a 3D model was developed and headstock drawing documentation.
302

Výpočetní analýza čtyř-koulového testu pro určování pevnosti keramických laminátů se zbytkovou napjatostí / Computational analysis of the ball-on-three-balls test for determination of strength of ceramic laminates with residual stresses

Venský, Jiří January 2021 (has links)
Tato diplomová práce se zabývá numerickou simulací B3B zkoušky. Byla provedena rešerše v souvisejících oblastech. Poté byly provedeny numerické simulace této zkoušky pro mnoho různých konfigurací (rovný, zakřivený a zakřivený vrstvený vzorek) pro disk a desku. Byla zjištěna hyperbolická závislost mezi tloušťkou a f faktorem. Závislost f faktoru na křivosti byla lineární. Byla provedena demonstrace možnosti prasknutí na rozhraní vrstev. Poslední část ukázala, jak by zanedbání vlivu zbytkového napětí mohlo vést ke špatnému vyhodnocování experimentů
303

Analýza trojrozměrných objektů metodou konečných prvků v časové oblasti / Analysis of three-dimensional objects by time-domain finite elements

Syrový, Jiří January 2011 (has links)
This thesis is aimed on three-dimensional finite element time domain analysis. Vector finite elements are used for analysis of cavity resonator made from PEC and filled with vacuum. Results are compared with classical “nodal” finite elements and with published literature.
304

Parametrická studie chování konstrukce vinného sklepa / Parametric study of behavior of the structure of the wine cellar

Hajn, Jakub January 2013 (has links)
In traditional wine village Bořetice recently occurred to serious disturbances on structures of wine cellars. These failures were caused by, among other things, changes in the properties of the rock environment. This work focuses on the implementation of parametric studies in terms of changing the properties of rock (soil) from the viewpoint of structural arrangement of the wine cellar.
305

Rekonstrukce sportovního letounu M-2 Skaut - zástavba pohonné jednotky. / Reconstruction of Sport Aircraft M-2 Skaut - Mounting of Power Unit.

Zakopal, Libor January 2008 (has links)
This diploma thesis deals with the design of an engine mount for the M-2 Skaut aircraft on the basis of LSA and CS-VLA specifications. It is divided into several sections: analysis of input conditions, determination of factors which influence the geometry, the main design and its verification using the Finite Element Method. The FEM is compared with an analytical solution to determine its accuracy. This thesis also deals with a selection of acceptable propelers for this engine along with a basic design of an oil and fuel system.
306

Zjišťování složek zátěžné síly u tvarově složitých součástí vozů Škoda / Determination of load force components for cars parts with complicated geometry

Bednarz, Tomáš January 2008 (has links)
Diploma project is aimed to load force vector decomposition to x, y and z direction for complicated Skoda car parts. The methodology of decomposition is based on measuring of car parts deformation by strain gauges and mathematical identifation of force compoments by neural network (ANN). ANN will be trained by results of FE model simulations or by calibration on real car parts.
307

Návrh rámu horského kola a jeho deformačně napěťová analýza pomocí MKP / Design of mountain-bike crossbar and its FEM analysis

Jelínek, Martin January 2008 (has links)
The aim of this diploma thesis is the part of evolution of the new bicycle frame for mountain biking, category enduro. The first part of this thesis is focused on creating dimensional modified model of the bike frame in CAD system SolidWorks. Subsequently this frame will be detailed by FEM analysis in software ANSYS Workbench and determine boundary conditions for this analysis. The final part is about visualization of the new bike frame.
308

Optimalizace kovaných vysokotlakých elementů zásobníku paliva systému common rail / Optimization of Forged High Pressure Elements of Fuel Accumulator of Common Rail System

Klepetko, David January 2009 (has links)
The subject of this thesis is the optimization of forged high pressure elements of fuel accumu-lator of Common Rail System. The aim of this work is to assess the current state and design the individual high pressure elements in the CAD system. There is implemented strain and stress analysis in the FEM system Abaqus/CAE and in fatigue postprocessor FEMFAT for all designs. On the basis of this analysis are proposed optimized design solutions.
309

Hydraulické posunovače / Hydraulic pullers

Kvasnica, Tomáš January 2009 (has links)
This Diploma thesis occupies with design of hydraulic puller. In work are mentioned possible types of construction. Choice construction of puller is disposed with parameters: maximum pushing force 50 kN, speed of piston rod 0,05 m/s. This work also contains FEM analysis by computer programme I-DEAS. The work also occupies with design of fluid drive.
310

Konstrukce rámu lehokola / Design of frame of recumbent bicycle

Gayer, Tomáš January 2009 (has links)
The aim of this diploma thesis is evolution of the new model of tricycle. This thesis describes process of engineering from design of several parts and whole frame in CAD system Autodesk Inventor, to creating complete drawing documentation. Next part of this thesis is focused on basic static-structural analysis using finite element method in software ANSYS Workbench and determining boundary conditions for this analysis. The final part is about visualization of the new tricycle.

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