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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

Problematika spolehlivosti ocelových prutových prvků citlivých na imperfekce / Problems of Reliability of Steel Members Sensitive to Imperfections

Nezbedová, Anna January 2015 (has links)
This thesis deals with the problems of reliability of steel members sensitive to imperfections. Formulas for nonlinear analysis of compressed and bended members are derived. For compressed elements, there is described the issue of buckling, for bended elements it is lateral-torsional buckling. Then a statistical analysis of reliability of these problems is performed and also comparison with the approach described in Eurocode 3.
142

Hnací ústrojí osmiválcového leteckého motoru / Powertrain design of a eight-cylinder aircraft engine

Ošmera, Petr January 2008 (has links)
Configuration of the powertrain of a flat-eight engine with ordered basic parameters is the theme of this thesis which name is Powertrain design of an eight-cylinder aircraft engine. This thesis occupies with configuration design of the crank mechanism and firing order, balancing of centrifugal and reciprocating forces and their moments, conceptual design of crankshaft and its stress calculation. This thesis also puts mind to calculation of torsional vibrations.
143

Hnací ústrojí desetiválcového leteckého motoru / Powertrain design of a ten-cylinder aircraft engine

Kopřiva, Martin January 2008 (has links)
Configuration of the powertrain of a flat-engine with ordered basic parameters is the theme of this final thesis which name is Powertrain design of ten-cylinder aircraft engine. This thesis is occupied with configuration design of the crank mechanism and firing order, balancing of centrifugal and reciprocating forces thein moments, conceptual design crankshaft and its stress calculation of torsional vibrations.
144

Hnací ústrojí čtyřválcového leteckého motoru / Powertrain design of a four-cylinder aircraft engine

Příborský, Vladimír January 2008 (has links)
This thesis named Powertrain of an four-cylinder aircraft engine dealing with configuration of the powertrain of a flat four-cylinder engine with ordered basic parameters. The thesis is focused on configuration design of the crank machanism and sequence ignition, balancing of centrifugal and reciprocating forces and their moment, conceptual design of crankshaft and its stress calculation. The thesis describing calculation of torsional vibration as well.
145

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.
146

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.
147

Konstrukční uspořádání zadní části rámu vozidla Formule Student / Formula Student Chassis Rear Part Design

Hajer, Václav January 2011 (has links)
This diploma thesis deals with description of the design of the rear of the vehicle structure of Formula Student processed by using a 3D CAD system. Formula have to fulfill all requirements Formula Student rules. The requirements and rules are given by building of engine and other considered engine components. The final version of the design of the rear part is assembled with the supplied front and the computational model is created to simulate the torsional stiffness of the FEM system. Another analysis model is created for a foreign supplied frame construction. Both of these frames are in terms of torsional stiffness evaluated and mutually compared. There are also mentioned selected Formula Student rules and overview of the formula frames and their overview.
148

Hnací ústrojí nekonvenčního vidlicového vznětového šestiválce s pryžovým tlumičem / Powertrain of unconvential V-6 diesel engine with rubber damper

Bečka, Petr January 2011 (has links)
The aim of this work is to design the crankshaft fork unconventional six-cylinder with offset pivots, the torque balance, modal analysis, vibration analysis of torsional and torsional vibration damper design, stress analysis using FEM.
149

Hnací ústrojí nekonvenčního vidlicového vznětového šestiválce s vyvažovacím hřídelem / Powertrain of unconvential V-6 diesel engine with balancing shaft

Vaculík, Tomáš January 2011 (has links)
The aim of this thesis is to design a powertrain of unconvential V-6 diesel engine with balancing shift with angel of cylinders’s axis 90 degrees and crank pin ofset of 30 degrees. The thesis provides an analysis of balance of inertial forces and their moments, layout of counterbalances on crankshaft and balancing shaft. It also provides a layout of discrete model of torsional cranksaft mechanism and layout of rubber damper of torsional oscillations.
150

Hnací ústrojí nekonvenčního vidlicového vznětového šestiválce s viskózním tlumičem / Powertrain of unconvential V-6 diesel engine with viscous type damper

Hejda, Tomáš January 2011 (has links)
The purpose of this thesis is design an unconventional powertrain V-6 engine with cylinder opening lines offset 90 degrees and 30 degrees of crank pin offset. It is an analysis of the balance of the crank mechanism, proposed unbalance, build a model of discrete torsion system, design of viscous torsional vibration damper, compares the results of the calculation of strength without crankshaft damper and with damper.

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