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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.
141

Pevnostní analýza protézy dolní končetiny / Lower limb prosthetics FEM analysis

Omasta, Milan January 2009 (has links)
This masters´s thesis deals with computational modeling of transtibial lower-limb prosthesis. For assesment of loading character and geometrical configuration, the gait analysis of an amputee, including ground reaction force measurement, strain gauge analysis and motion analysis, was accomplished. Information on geometry was obtained using 3D optical scanning procedure. Material model was gathered using non-destructive mechanical testing and mimicked in a FEA software. For loading conditions the static structure analysys using FEM was accomplished. The critical poins in construction was found. Recognition of agreement about experimental and computational model was accomplished.
142

Návrh nové technologie výroby tvarové hřídele "Hohlwelle". / A new production of the shaped shaft "Hohlwelle".

Kundrát, Vladimír January 2009 (has links)
Diplomová práca je zameraná na riešenie aktuálneho a akutného problému výroby tvarovej hriadele “Hohlwelle” vo firme Vekastool. Tri návrhy riešenia boli sústredené na dokončovaciu operáciu diery 30 H7, z ktorých dva boli priamo odtestované vo firme. Jedna z nich bola návrh a realizácia nového vyvrtávacieho nástroja firmou Ham-Final , ktorá priniesla zníženie nákladov o dve tretiny.
143

Verifikace deformace strojního dílu / Verifikation of machine component strain

Novák, Tomáš January 2010 (has links)
The thesis deals with a comparative analysis of strain of parts using finite element method (FEM) and measurement of the optical system Pontos. Part was used the reflector of Volkswagen Polo. The subject of comparing were the values of deviations optical shield of reflector which excitation random vibration described power spectral density. The thesis presented describes of experimental measurements to obtain the boundary conditions using optical systems. FEM analysis was performed using software ANSYS Workbench 12.
144

Optimalizace konstrukce rámu vozidla Formule Student / Formula Student Vehicle Frame Optimization

Krkoška, Kamil January 2010 (has links)
The goal of this diploma thesis was to create optimalizated frame design for Formula Student/SAE. Basic requirements were, that new design must meet the newest Formula Student/SAE rules and other various requirements. In the thesis are built up an overview of most important rules and also an overview of previous frame designs. Next are described design process of the new frame and its stress analysis in FEM software. Main attention is given to analysis of torsional stiffness. The results of analysis are compared to previous frame designs and to parameters of Formula Ford. There are also given recommendations and other possibilities for further frame design development.
145

Deformačně-napěťová analýza protézy dolní končetiny / Stress-strain analysis of lower limb prosthetic

Musilová, Kateřina January 2010 (has links)
This master thesis deals with lower-limb prosthesis. The aim of the first part of this work is stress-strain analysis of trans-tibial prosthesis, which is understand without prosthetic socket and the foam prosthetic feet. Analysis is made using finite element method in ANSYS Workbench 12.0 software. For the purpose of setting up the computational model it is necessary to make few partial models. Model of geometry of the prosthesis is made in SolidWorks 2009. Based on the outputs of stress-strain analysis and the results evaluation, the critical component is chosen and this one is evaluated according to limite state for fatigue. The algorithm of evaluation of named component in the state of high cycle fatigue is discussed in the second part of this thesis.
146

Eliminace přídavných zatížení při zkoušení podvozkových komponent / Additional Load Elimination at Suspension Components Testing

Brychta, Tomáš January 2010 (has links)
The thesis first provides a survey of acceleration tests with the focus on automotive component testing. The survey covers multiple types of acceleration tests and sources of stress. The thesis then includes a MATLAB application for the removal of inertia forces, which is applied on two shaft configuration models developed in Pro Engineer. Both models are subjected to stress analysis using FEM in Ansys. The thesis has been carried out in collaboration with TRW-DAS Dačice.
147

Deformační a napjatostní analýza nárazníkové částí automobilu při rázovém zatěžování / Strain and stress analysis of the car buffer zone under impact loading

Nedělka, Pavel January 2011 (has links)
The master thesis deals with a stress-strain analysis of the front crash structure of a race car by using the finite element method. The structure is loaded by an impact loading. This type of analysis belongs to the transient analysis so the explicit formulation of the finite element method is used. The LS-DYNA software was used for calculations. The goal of this thesis is to express the influence of the crash structure to the change of the car's kinetic energy as well as the amount of absorbed energy in case of frontal impact.
148

Snižování hluku počítačů obkládáním stěn zvukoizolačními materiály a regulací otáček ventilátorů / Noise control of computers-application of optimal sound isolation layers and fun rotation speed

Kunovský, Martin January 2011 (has links)
This thesis deals with the distribution of noise in the computer case and radiation into the neighborhood. Influence of geometrical shape and size of the computer case on radiated noise from the computer was investigated as well as effect of placement of the fan. Reducing noise by using sound absorbing material into computer case and result of the suitable position of the computer in the working environment were also tested. Simulation of the noise diffusion and effectivity of anti-noise equipment was executed in Ansys FEM program.
149

Návrh dálničniho osobního vozidla na elektrický pohon / Design Study of Highway Electrical Passenger Car

Přikryl, Karel January 2011 (has links)
This thesis deals with design concept of the electric car. At first, vehicle dynamics was solved in program MathCad. The components were selected from the obtained results. This was followed by a proposal layout design and vehicles main dimensions design. The frame was created in program ProEngineer, and then imported into ANSYS. Simulation of torsional rigidity was made in ANSYS by FEM.
150

Návrh příhradového výložníku offshore jeřábu / Design of truss jib offshore crane

Palatinus, Peter January 2011 (has links)
This master`s thesis deals with the design of an offshore crane jib with maximal safe working load 80 tons and maximal radius 45 meters. The design consists of a design solution of the steel construction and a stress analysis of its FEM model, which was performed using NX I-deas software according to the requirements and specifications of the Huisman company. This thesis includes source materials for drawing documentation.

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