CAD System for 2D Drawing

Bakalářska práce je zaměřená na návrh a tvorbu CAD systému pro dvojrozměrné kreslení. Obeznamuje s využitím počítačů v průmyselné výrobě a s výhodami, které jejich využití přináší, s obecnou definicí CAD systémů a požadavkami na ně. Práce obsahuje návrh vytvářeného CAD systému a jako praktickou čásť, implementaci navržené aplikace. Na závěr je shrnuto, čeho bylo při tvorbě dosaženo a čeho by potenciálně v budoucnu mohlo být dosaženo při dalším rozšiřování aplikace.The Bachelor´s thesis is aimed at the design and creation of CAD system for 2D drawing. It introduces the use of computers in manufacturing and the advantages the use of computers brings, general definition of CAD systems and requirements imposed on them. The thesis contains the design of generated CAD system, and as a practical part it introduces implementation of the designed application. Finally it summarizes what has been achieved in developing and what could potentially be achieved in further expansion of the application in the future.

Numerical Analysis of the Temperature Field in Luminaires

This paper contains a calculation of the thermal field caused by electro-heat in lighting devices. After specifying the heat sources, a thermal analysis is make using the finite element method and the equivalent thermal scheme method. The calculated results have been verified experimentally

New coupled thermoelectric link finite element for FGM materials

The paper deals with derivation process of new FEM equations for steady thermoelectric two-way coupled analysis of link conductor made of Functionally Graded Material (FGM). One example of coupled analysis will be introduced to demonstrate accuracy and effectiveness of our new approach in computer modelling of such systems

Ananlysis of actuator made of fgm using new electro-thermo-mechanical finite elements

Actuator is a mechatronic system that transforms one type of energy (e.g. electric energy) into the mechanical displacement and mechanical force (mechanical energy). Nowadays, these actuators can be made of Functionally Graded Materials (FGM) to ensure simple shape of the actuator and to improve its effectiveness, particularly for micro systems. FGM is built as a mixture of two or more constituents which have almost the same geometry and dimensions. The variation of macroscopic material properties can be induced by variation of both the volume fractions and material properties (e.g. by a non-homogeneous temperature field) of the FGM constituents. The paper deals with a new approach in analysing of the systems made of FGM using our new beam finite elements. Multiphysical analysis (weak coupled electro-thermomechanical analysis) and spatial continuous variation of material properties are supported. The analysis of the micro actuator with constant cross section made of FGM is presented in the paper. This simple-shaped actuator is supplied by electric current and the efficiency of the actuator is optimised. The solution results will be compared with those obtained by using solid elements of a FEM commercial program

The Influence of Fiscal Policy on Economic Growth in Euro Area Countries

Import 05/08/2014Diplomová práca bola zameraná na úlohu fiškálnej politiky v ovplyvňovaní ekonomického rastu krajín eurozóny. Cieľom práce bolo zistiť vplyv fiškálnych premenných v definovanom rastovom modely a na základe týchto zistení navrhnúť možné riešenia súčasných fiškálnych a rastových problémov eurozóny. Odhad rastovej rovnice bol realizovaný pomocou panelovej regresie, v ktorej prierezové dáta tvorilo 17 krajín eurozóny v čase od roku 2000 do 2012. Všetky fiškálne premenné boli merané ako podiel k HDP. Bolo zistené, že sociálne dávky, respektíve sociálne výdavky boli fiškálnou položkou s najsilnejším vplyvom na rast týchto krajín. Tento vplyv bol negatívny. Jedinými pozitívne vplývajúcimi položkami boli verejné investície a daňová kvóta daní z príjmu korporácií.This thesis was aimed at the role of fiscal policy in influencing the economic growth of the euro area countries. Main goal of the thesis was to find out the effect of fiscal policy variables on the defined economic growth model and based on of these findings to propose possible solutions for dealing with recent ficsal and growth problems of the members of the euro area. Estimation of the growth equation was carries out by a panel regression for cross-section of 17 countries of the euro area in period from 2000 till 2012. All fiscal variables were measured as ratio to GDP. The most important results were that social benefits, or so called social expenditures had the biggest effect on economic growth of these countries. This influence was negative. The only variables with a positive growth effects were general government investments and taxes on income and profit of corporations had positive growth effects.156 - Katedra národohospodářskávýborn

Nový prútový konečný prvok pre elektro-tepelné analýzy FGM materiálov

In this contribution, new electro-thermal link finite element for Functionally Graded Materials (FGM) will be presented. Spatial variation of material properties as well as varying convection effect will be considered. FEM equations describing the behaviour of the link element will be based on semi-analytical calculation of ordinary differential equations describing coupled electro-thermal problem.V predkladanom príspevku bude prezentovaný nový elektro-tepelný prútový konečný prvok pre Funkcionálne Gradované Materiály (FGM), pričom bude uvažovaná priestorová premenlivosť materiálových vlastností a pôsobenie premenlivej konvekcie na prút. Budú prezentované nové MKP rovnice opisujúce správanie sa prúta, založené na semi-analytickom výpočte obyčajných diferenciálnych rovníc popisujúcich previazanú elektro-tepelnú úlohu

Augmented Reality for Mobile Devices for Precise Urban Navigation

Diplomová práce je zaměřená na rozšířenou realitu a její realizaci pro mobilní platformu Android. V teoretické části je kladen důraz na obeznámení se s principy rozšířené reality, možnostmi její realizace pro mobilní platformu Android, která je také podrobněji představena. V praktické části se dále zaměřuje na návrh a realizaci knihovny a aplikace využívající tuhle knihovnu pro tvorbu rozšířené reality na platformě Android pomocí GPS a polohových senzorů. Aplikace slouží jako navigace a zobrazuje cestu ke konkrétnímu cíly, jak v podobě rozšířené reality, tak i na klasické dvourozměrné mapě. Práce podrobně popisuje navrhované řešení knihovny a aplikace a jejich implementaci. Nakonec popisuje testování, zhodnocuje dosažené výsledky a diskutuje nedostatky výsledného řešení a možnosti jeho vylepšení, respektive rozšíření.The Master's thesis is focused on the augmented reality and its implementation for the Android mobile platform. The theoretical part is aimed at acquaintance with the principles of the augmented reality and the possibilities of its realization for the Android platform, which is described in detail, too. The practical part is focused on the design and implementation of the library, and the application using this library for the development of location - based augmented reality for Android platform, using the GPS and positioning sensors. The application serves as a navigation and displays a route to a specific destination location, both in the form of augmented reality and the standard two - dimensional map. The thesis describes the designed solution of the library and application and their implementation in detail. Finally, the thesis describes the testing of the solution, reviews achieved results and describes limitations and shortcomings of the solution and possibilities of its future updates, extensions respectively.

Piezoelectric finite beam element with FGM core for mechatronic applications

The paper deals with finite beam element with piezoelectric layers and functionally graded material of core. In the paper homogenization of FGM material properties and homogenization of core and piezoelectric layers is presented. In the process of homogenization direct integration method and multilayer method is used. The concept of transfer functions and transfer constants is used for computation of individual submatrices. Functionality of new FGM finite beam with piezoelectric layers is presented by numerical experiments. Static, harmonic and full transient piezoelectric analysis of FGM beams with piezolayers is presented

A solution for 1D non-linear problems for finite elements with full stiffness matrices

Structural analysis of structural parts with stiffness variation can be difficult. The stiffness variation of elements can be modelled by average values of cross-sectional and material parameters and applying the fine FE mesh. For elimination of mentioned disadvantages of classical finite element applications, a two-node nonlinear bar element with the continuous longitudinal variation of stiffness was developed in the first part of the monography. The stiffness matrices of the bar element were derived using full geometric nonlinear nonincremental formulation of equilibrium equations without any linearization. In the second part, the stiffness matrices of geometrically nonlinear beam finite element were derived using full nonlinear nonincremental formulation. The matrices of two-node plane beam element with symmetric cross-section and constant stiffness were formulated. The accuracy of new nonlinear elements were compared and assessed by numerical experiments against ANSYS analyses