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Stiffness estimation at the machining head and the strength analysis of the moving parts of the machining center MCV 1220.
Zbožínek, Martin ; Houfek, Martin (referee) ; Vrbka, Jan (advisor)
Main objective of the work was to estimate the possibilities and the limits of elementary stress and strain analysis of the construction. At the beginning it was necessary to simplify the problem to the 1-D bar problem. The calculation was performed for three typical loading cases, namely for the middle and the border position of the machining head. The contact forces and momentums and the displacements at the machining head have been calculated. The obtained results were then used for the stiffness evaluation of the construction at the machining head. The strength analysis of the moving parts of the machinig center has been done, too. Modern software products (Autodesk Inventor, ProENGINEER, ANSYS Workbench, Maple, Mathcad, etc.) were used for the calculation. The results were compared with The Finite Element Method results.
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Mechanical/Physical Simulation of Solid Objects
Bureš, Jaroslav ; Maršík, Lukáš (referee) ; Široký, Adam (advisor)
This work deals with simulation of launching a golf ball. Here are described simulation techniques which can be used for computer simulations. In addition, physical laws are discussed, that need to be understood to create a valid golf ball launch model. These include aerodynamic laws for calculating ball's flight trajectory, as well as events occurring while ball moves on the ground. After this is analyzed implementation of the program using C++ and OpenGL graphics library. The work is completed with comparison of measured simulation results with analytical solution and values of other applications.
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Mutual interaction of multiple cracks growing in the particulate composite with brittle matrix under conditions of sub-critical crack growth
Slávik, Ondrej ; Ševeček, Oldřich (referee) ; Majer, Zdeněk (advisor)
In the first part of the submitted diploma thesis, the knowledge in the sphere of the fracture mechanics, related to the practice part of this thesis are summarized. In that the 2D parametrical numerical model of the particle composite with multiple cracks was created, using the finite elements method. Thanks to this model it is possible to find specific configurations which are showing the existance of multiple mutual interactions between these cracks, just by simple manipulation of the input data. In the calculations the influence of the residual stresses was considered which are formed during production of the material. The effect of the subcritical crack growth was taken into account as well in this thesis.
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Robot for MiniSumo
Marvan, Aleš ; Orság, Filip (referee) ; Drahanský, Martin (advisor)
This thesis deals with the subject of a mobile robot design for an international competition Minisumo. The work includes both a theoretical presentation of the robot design as well as the documentation of its realization. The development process starts with a creation of a theoretical basis, which is functioning as a source of information for the consecutive design of the mechanics, electronics and final production of the robot. The work also includes the development of control software necessary for the correct operation of the robot.
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Complex simulation model of vibration power generator
Harapát, Jan ; Ondrůšek, Čestmír (referee) ; Hadaš, Zdeněk (advisor)
This work is focusing on analysis of current development in energy harvesting projects in aerospace industry field, and on analysis of current development in vibration generator field. It is also concentrating on establishment of a complex simulation model of vibration generator. It deals with modeling of magnetic field of generator and its cross connection with a mechanic and an electronic model.
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Computational analysis of the steel-composite carrier of the machining center TM 2000
Zbožínek, Martin ; Obdržálek, Vít (referee) ; Vrbka, Jan (advisor)
The main objective of the work was to perform a computational analysis of the hybrid (steel-composite) carrier and compare the results with the original metal carrier. Static analysis, modal analysis and frequency response were solved. Computation was performed for three different relative positions of the carrier. Static stiffness, natural frequencies and dynamic compliance have been calculated. The results were verified by an experiment performed on a scaled-down model of the carrier. Modern software products, namely MSC Patran, MD Nastran, Matlab and ProENGINEER, were used for the calculation.
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Modeling of Elastic Mechanisms
Slaný, Jan ; Keršner, Zbyněk (referee) ; Frantík, Petr (advisor)
The thesis deals with constructing and solving a discrete mechanical model from the point of view of dynamics. As an example of a real-world problem which can be approximated in this way, the dynamical behaviour of a bow and arrow during loose have been chosen. In order to solve this particular type of model, a specialized piece of software has been developed. This method and software have been deployed to simulate shooting a straight bow of specific parametres. Two variants for the shape of the bowstaff have been evaluated.
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Simulation of a Golf Ball Trajectory from Video
Hlobil, Marek ; Ševcovic, Jiří (referee) ; Chmelař, Petr (advisor)
This work deals with the golf ball flight simulation based on video recordings. The way how to determine the trajectory of a golf ball using several initial points is described here. For the ball recognition there are used computer vision techniques, particulary pattern recognition. The work covers physics of the golf ball, it deals with physical influences that occurs during the ball flight and it tries to describe the trajectory approximation.
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Solved problems in mechanics
Soukup, Marek ; Mandíková, Dana (advisor) ; Žák, Vojtěch (referee)
: In terms of the thesis an electronic collection of solved problems was created. The solved problems embrace the mechanics of solid object theme. There are total 17 of solved problems in the collection. The problems cover the level from secondary school to introductory university lectures on classical mechanics. The problems are selected from existing collection and publications. Every problem contains an assigment, a structured help. a detailed solution and a result. In the first part of the thesis a problem and an aim of the thesis are specified. Next, the overview of the subject matter which is teached in primary schools, secondary schools and at university follows. The common schoolbooks are also described. The last part of the thesis describes the characteristics, the technical solution, the structure and the content of the electronic collection of solved problems. In the conclusion the results of work and the future perspective are summerized. An attachment includes 5 solved problems. All solved problems and the text of the thesis are included in the electronic form on the enclosed CD.
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Goniometric functions in physical applications
Hanzlík, František ; Kvasz, Ladislav (advisor) ; Mošna, František (referee)
The aim of the bachelor thesis is to present practical applications of goniometric functions in various fields of mechanics. These are areas that are part of our daily lives in one way or another. The work describes or explaines the necessary context in order to make the text understandable to a high school graduate. The work can be used as a teaching tool for teachers of physics or mathematics in secondary schools. Emphasis is placed on the application of goniometric functions. Previous knowledge of goniometric functions, especially goniometric patterns, is assumed. Much of the work is processed on the basis of internationally recognized lectures in physics. The work is not an exhaustive list of areas of physics in which goniometric functions can be applied. However, it is proof that goniometric functions are necessary to describe a number of elementary physical phenomena.
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