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Utilization of carbon fibre for construction of elastic elements of mountain bike rear triangle
Linda, Jakub ; Švancara, Pavel (referee) ; Březina, Lukáš (advisor)
The aim of the thesis is to design a carbon elastic element in the suspension mechanism of the rear wheel of a mountain bike. The elastic element will replace the rotary link and its deformation will allow movement of the rear wheel suspension mechanism. At the beginning, the thesis deals with the theoretical introduction to bicycle geometry, types of rear wheel suspension mechanisms and their characteristics. Later on, the work is devoted to composite materials in general, and it also deals with methods of manufacturing a composite bicycle frame and deals with the mechanics of composites. Further, the thesis is focused on the research of already existing frames utilizing the flexible element in the suspension mechanism of the rear wheel. Finally, the work focuses on the design of a full-suspension bicycle using a flexible element, justifies the choice of the replaced suspension mechanism and also justifies the individual simplifying assumptions and their impact on the solution. The elastic element is analyzed for deformations and stresses in the Ansys software. Finally, the results of the analysis and recommendations are presented.
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Multi-body model of a motorcycle suspension
Kotas, Jakub ; Lošák, Petr (referee) ; Březina, Lukáš (advisor)
This bachelor's thesis deals with the rear wheel suspension of a motorcycle. Theoretical basics of the suspension design and terms, essential for the understaning of the work, are breifly explained. A review of contemporary used spring, shock-absorber and suspension system types is presented.
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Virtual prototype of mechatronic system
Dinga, Milan ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with modeling of delta 3D printer virtual prototype and its co-simulation using software ADAMS and MATLAB/SIMULINK. The first part consists of virtual model creation and its kinematic analysis. Then a model of electric motors is created. The final part consists of co-simulation and control design.
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Pendulum excitation
Vrána, Jiří ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis is focused on creating a model situation of excited pendulum with one degree of freedom that oscillates in both linear and nonlinear condition. The theoretical part describes several basic concepts of oscillation theory and states some examples of pendulum applicability. The practical part consists assembling of motion equations of model situations, based on which simulations programs are created. The thesis contains also concept of practical use of the nonlinear pendulum model.
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Chosen Social Problems of Chomutov Region with a Focus on Young People
Brezina, Lukáš ; Bernard, Josef (advisor) ; Jandejsek, Petr (referee)
My work is focused on rise of social problems and social pathological phenomena in Chomutov location and relation between man, his surroundings and its influences in young people context. There are lots of books with this themes, but I was interested in my ability of describing this by myself. There was made a research at basic schools, I compared its results with results of official statistics and I got to knot that this locality has good conditions for rise of social pathological phenomena. This does not mean, that the locality is not able to live in a healthy way, it is just needed to create conditions for that kind of life. Writing of this work make me knot how important are places in our lives. I hope I would be one, who will support the positive conditions of my future place to live. Powered by TCPDF (www.tcpdf.org)
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Redesign of mechatronic system for presentation of damped oscillation
Hanuška, Rostislav ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with mechatronic system design intended for demonstration of oscillation with electromagnetic damping for the purpose of its practical use in classes. A part of this thesis is also introduction to issues related to solids vibration and damping. Then a simulation model will be created in MATLAB/Simulink where required parameters of the damper will be selected, and also there is a design of the whole system. Finally, a comparison of response to initial deflection to real fabricated construction.
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Virtual prototype of mechatronic system
Dinga, Milan ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with modeling of delta 3D printer virtual prototype and its co-simulation using software ADAMS and MATLAB/SIMULINK. The first part consists of virtual model creation and its kinematic analysis. Then a model of electric motors is created. The final part consists of co-simulation and control design.
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Engineering design of a fullsuspension mountain bike frame
Zvozil, Ondrej ; Lošák, Petr (referee) ; Březina, Lukáš (advisor)
The aim of this bachelor thesis is designing of a full-suspension mountain bike frame. At the beginning of the thesis mountain bikes are divided into categories, the function of a shock absorber is described and issues of bike kinematics and related characteristics are clarified. The thesis also describes properties of the most used materials for bike frames manufacturing. Subsequently, the most common systems of rear wheel linkage are analysed. Next, the requirements for own design are identified in terms of geometry, construction, kinematics and a creation of its 3D model in SolidWorks software. The characteristics of designed frame are analysed by specific software Linkage X3. Then a static analysis in Ansys software is made in order to select bearings for individual pivots. The final part of the thesis is dedicated to visualisation of designed frame.
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Waterproof wireless IMU cover design
Kračmar, Filip ; Březina, Lukáš (referee) ; Krejsa, Jiří (advisor)
This bachelor thesis deals with the design and realization of waterproof wireless inertial measurement units cover to measure data of swimming training. The model of casing was created in 3D CAD software. IMU is fixed to lower back by using belt. Easy access to electronics and charging connectors are guaranteed. The shape corresponds to hydrodynamic requirements. Manufacture was made by 3D printing. Casing was tested of waterproof and used for measurement of swimming training.
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