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Advanced Control Algorithms of Powertrain Units
Špičák, Milan ; Puškár, Michal (referee) ; Slimařík,, Dušan (referee) ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis describes computational control of vehicle powertrains using common variable, engine torque. The thesis is divided into three main parts. The first one shows design of methods for torque estimation using known or measured variables on the vehicle. The second part contains design of powertrain control algorithm utilizing the engine torque as a common variable among individual modules. The third part describes experimental optimization of the longitudinal acceleration of a vehicle using torque control.
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Computational Model of Shock Absorber
Svršek, David ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
The diploma thesis titled, Computational model of shock absorber, is concerned with ways to simulate individual actuators of dampening with the goal of obtaining F-v characteristics dependent on the setup of the shock absorber. The work is divided into two halves, the first one being a review of literature and the second half being practical. The review part is focused on ways of shock absorber constructions and the physical principles involved with the present forces. The practical part of the work contains a computational model of a monotube shock absorber in the Matlab programming software.
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Velodrom
Horký, Rostislav ; Pilgr, Milan (referee) ; Štrba, Michal (advisor)
Diploma thesis deals with desing and static assessment of supporting steel roof structure of velodrom. Climatic load is determined for location of city Znojmo. The thesis consists of technical report with comparison of 2 options solution, technical report of chosen variant, static report of main supporting parts and chosen connections, bill of materials quantities and drawing documentation. Computational model for evaluation of internal forces is realized in SCIA ENGINEER 17.01 software. Static report is created manually according to valid European standards.
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Design of the point supported slab of the house in Olomouc
Velešík, Marek ; Požár, Michal (referee) ; Klusáček, Ladislav (advisor)
The bachelor thesis is focused on the design of the point supported reinforced concrete slab of the apartment building on Litovelská street in Olomouc. The slab is situated above the ground floor. Static calculations are based on internal forces of the computational model created in software SCIA Engineer 17.01. The correctness of computational model was verified by the method of summary bending moments. The main focus of the thesis was design procedures and assessments of point supported slab according to Eurocode 2: Design of concrete structures – Part 1-1: General rules and rules for buildings (ČSN EN 1992-1-1). The control of the design of reinforcement was performed in software SCIA Engineer 17.01.
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Computational Models of Transmission Dynamics
Czakó, Alexander ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This bachelor thesis deals with a summary of knowledge about the computational models of transmission dynamics. Dynamics modelling has different levels of complexity. From the modal, harmonic analysis solved in the FEM, up to creating a virtual prototype in the MBS softwares. In the introduction, there are presented the basics of analytical dynamics and mechanical oscillation which are the basis of individual analysis. Vibration sources in transmission are described as well.
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A diffusion-based model of signal transduction in the vertebrate olfactory sensory neuron, and its sensitivity analysis
Beneš, Martin ; Zápotocký, Martin (advisor) ; Jelínek, Jan (referee)
The goal of this model is to create and to implement qualitative model of the signal track of olfactory sensory neuron, including the feedback with a focus on diffusion of substances that allows to conduct more simulations for the better understanding of dynamics of the signal track. This model is expected to be used for the simulation of influencing during the activation of two receptors in firstly defined distance. Model was created and therefore implemented in a programming language Python with the use of library STEPS. Then I have conducted sensitivity analysis by a method Morris OAT on the model, together with an optimization with the usage of change of individual parameters with a great importance on the output of the model. Model is conducting good and biologically comparable results when there are from 10 to 100 active receptors at the beginning of the track. Unfortunately with a lower numbers, the results are not valid and therefore not to be used for the simulation of influencing of two activated receptors. Despite this is a main benefit of the work the model of signal transduction for the whole signal track with an included feedback and emphasis on diffusion. Another benefit is a set of scripts for the sensitivity analysis by a method Morris OAT and optimization.
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Static analysis of acoustic enclosure
Hándlová, Barbora ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The subject of this Bachelor’s thesis is a structural analysis of acoustic enclosure, which is located above production facilities. The enclosure is assembled of elements with a load-bearing skeleton made of steel. It is possible to dismount the enclosure in parts. Computational software RFEM was chosen to model the 3D structure. The aim of this thesis is an assessment of ultimate and serviceability limit state of some selected elements. Some of the results obtained from the RFEM program are verified by hand-done calculation.
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Engine Block for Diesel Engine 2.0 L
Kudlík, Michael ; Ramík, Pavel (referee) ; Svída, David (advisor)
This diploma thesis describes the problems of the engine block and crankcase. As a one of the most imprortant and first part of this task is creating a 3D simulation model of a engine block and calculating load forces of engine block. The simulation and evaluation of the solution are calculated by using method finite element, software Ansys. The conclusion and ending point of the od the diploma thesis construction desing of stiffness increase.
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Stress-strain analysis of screw-bone system used in a plate-fixation of fractures
Kalnický, Jakub ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
In the field of orthopaedics and traumatology, a whole series of problems appear related to fracture fixation by means of various types of plates. Appropriate application of the plate is the difficult task that a doctor needs to deal with in the operating room. Regarding mechanics, the number of screws and their spacing have a major impact on the healing process. If there are too many screws or lack of them, the fracture does not heal properly. This can lead to implant failure. This work deals with stress-strain analysis of screws and bone tissue with a fracture fixed by LCP. It deals with the influence of different geometrical configurations of the screws on the stress, deformation and strain of the system. For this purpose, the computational modelling was used by means of the finite element method. Two computational models have been created, on which different screw arrangement was analysed. The first computational model represents diaphysis of the femur that is at the beginning of the healing process. For the four load models and eleven geometric configurations and number of the screws, a total of 44 computations were performed. The second computational model represents the distal part of the femur. Femoral geometry model was created based on CT (computed tomography) examination, geometric model of the plate was created by 3D scanning. Deformations and stresses were compared in the three geometric configurations of the screws during the healing process.
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Implementation of Cogeneration Unit in "Smart Heating and Cooling Networks"
Uhrík, Patrik ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
The aim of the Master‘s thesis was to create a computational model for integration of the cogeneration unit into the smart thermal network. For the better use of waste heat from the selected cogeneration unit MOTORGAS MGM250 during the summer period, the absorption circuit was dimensioned and the appropriate trigeneration computational model was formed. In the theoretical part, the function, operation and heat performance of the cogeneration unit as well as the suitability of the connection of the cogeneration unit with the absorption chiller during the summer period were described. In the practical part, the operational data of the Faculty of Mechanical Engineering of the Brno University of Technology and the theoretical performance data from created cogeneration and trigeneration computational models were compared. Based on this comparison, the conclusion about the suitability of use of both computational models was made.
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