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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.
11

Teplotní vlastnosti automobilových zdrojů světla - LED / Thermal properties of automotive light sources - LED

Bárta, Jiří January 2018 (has links)
The aim of this theses is to summarize the basic information about thermal properties of automobile lighting sources. The main topic is a LED diode. A model of a LED diode is going to be created in Inventor. A simulation of Joule's losses will be performed in Ansys Workbench Transient.
12

Sběr energie pomocí MEMS / MEMS based energy harvesting

Klempa, Jaroslav January 2019 (has links)
This work is dedicated to principles of energy harvesting or scavenging from free energy around us. Energy harvesting principles are described in the first part. Following chapter is devoted to description of piezoelectricity and piezoelectric materials. Next part researches already reported results on piezoelectric energy harvesters. Following chapter shows simulations on designed structures in ANSYS® Workbench. Next the fabrication of the structures is described. Measurement are made regarding to maximum generated power.
13

Výpočet rozložení teplotního pole v elektrickém stroji / Calculating the temperature field distribution in an electrical machine

Čermák, Jan January 2019 (has links)
The aim of this work was to create a 3D model of an asynchronous motor on which it is possible to perform temperature and other simulations using the Ansys Workbench computational software. The whole work consists of the theory of warming of electric machines, the separate construction of a 3D model and its temperature analysis.
14

Srovnání přenosu sil u duální hlavice a u náhrady trapéziometakarpálního kloubu s klasickou jamkou s fixovaným polyethylénem v jamce / Comparison of force transmission between trapezio-metacarpal prosthesis with dual mobility and standard prosthesis with fixed polyethylene in cup

Lamrich, Richard January 2019 (has links)
Presented master thesis focuses on comparison of total replacement with fixed polyethylene and replacement with dual mobility of trapeziometacarpal joint. Computational models consist of bones trapezium, trapezoid, first and second metacarpal and components of total replacements stem, neck, insert and cup. Replacements are compared on basis that how big force is transmitted from replacement to trapezium, contact pressures between neck and insert, equivalent elastic strains of bone tissue and lastly what is the influence of friction coefficient on results. Task was solved with finite element method in software ANSYS Workbench 19.2.
15

Tlustovrstvá topná deska s regulací výkonu / Hot plate with power regulation

Lacika, Marek January 2020 (has links)
This thesis deals with issues of used hot plates and thick-film technology. The theoretical part of diploma thesis contains a theoretical analysis and description of corresponding technology and usage of materials. The practical part of the thesis focuses on the design of the resulting device, which forms design of the test and optimized hot element, the initial design of the device and the design of models for temperature simulations. Then follows description of the practical realization of the motifs and testing of the created thick-film structure on a ceramic substrate. In the last part are shown simulations of heat transfer in the proposed model of the device.
16

Srovnání hemisferické a kónické jamky u totální náhrady trapéziometakarpálního kloubu / Comparison of hemispheric and conical cup in the total trapeziometacarpal joint replacement

Kukučka, Ivan January 2020 (has links)
This diploma thesis deals with the comparison of total replacement of a trapeziometacarpal joint with a hemispherical cup and replacement of the same joint with a conical cup. In both cases of implants, these are types of replacements with dual mobility. The focus of the diploma thesis is the comparison of the transfer of forces from the head of the prosthesis to the trapezius bone through the different shape of the cup. The work was processed using computer software ANSYS Workbench 19.3.
17

Modelování vlastností EC motoru / Physical Fields Modelling of EC Motor's

Kružík, Pavel January 2008 (has links)
This thesis concludes a description of construction and functions of Electronically commutated motors. The main target is modelling of thermal field of Electronically commutated motors. For modelling was chosen Ansys Workbench setting with CAD geometry. There was a measurement for verifying result of simulation, and its proof is described in my thesis. This project also concludes comparison of results from simulation itself and results obtained from measuring thermal profile of EC motor.
18

Využití prostředí ANSYS Workbench pro teplotní výpočty elektrických strojů / Utilization of adaptive CAD systems at virtual model creation of electrical motors

Sedláčková, Petra January 2010 (has links)
Thermal analysis of electric machine is one of the key steps in design procedure. Traditionally, thermal calculations are done by analytical method, mostly based on equivalent electrical circuit, where thermal quantities are replaced by equivalent electrical quantities. These methods employ so-called electro thermal analogy. Different approach is to use Finite Element Method, which is the main goal of this thesis. First part of the thesis is devoted to description of CAD system Autodesk Inventor, which is modern parametric CAD for modelling of virtual prototypes. This system is then used for creation of three dimensional model of brushless DC machine. Second part is focused on thermal calculations in Ansys Workbench environment. Model of brushless DC machine created in Inventor is transferred into Ansys Workbench and thermal analysis is carried out.
19

Výpočet průběhu chladicího média v asynchronním motoru / Calculation of the cooling medium in the asynchronous

Trnka, Zbyněk January 2011 (has links)
The aim of this master´s thesis was to model the fan for the induction motor, and then to solve this model using Ansys CFX in the terms of flow, when considering the different speeds of rotation of the rotor. The introduction of this work is dedicated to basic terms and definitions from spheres of fluid flow, cooling of the electrical machines, especially to the cooling of the asynchronous machine. There is also attention paid to losses in this machine. Finally, there is modeled radial fan and an air gap of specified induction machine. By using Ansys CFX the flow, which passes from the fan into the air gap, is analyzed.
20

Model proudění chladicího média v elektrickém stroji / Model the flow of coolant in electrical machine

Potyš, Jiří January 2012 (has links)
The thesis is focused on possibilities of asynchronous motors cooling with use of simulation at ANSYS Workbench program. It is divided into two parts. The first part deals with analyses of cooling medium circulation through ventilator and cooling medium circulation on the motor surface. As a result of the analyses is air speed distribution and air pressure representation. The second part of the thesis includes simulation of motor temperature rise both with cooling and without cooling at Ansys Workbench application together with temperature measurement of real asynchronous motor in the laboratory. For cooling purposes air circulation was used. The goal of my research is comparison of the computing results with the measured results.

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