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Návrh a optimalizace konstrukce svahovací lopaty
JŮZA, Jan
The master thesis deals with the design of a slope shovel. The literature part of the thesis deals with the classification of excavators according to size, type of chassis, and type of boom. Subsequently, an overview of working tools and a description of their purpose is given. The aim of the thesis is to design a slope shovel, therefore the thesis mentions the program in which the shovel will be designed. The following part of the thesis is devoted to the determination of the parameters that the design should meet. In the main part of the thesis a description of the different parts of the model and the procedure for their manufacture is given. The final part of the thesis is devoted to the development of the strength analysis of the model and the financial evaluation of the shovel design.
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Simulation of the trencher device prototype
Polák, Václav ; Sommer, Matěj (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this thesis were a simulation and an analysis of the construction of a prototype of additional trencher equipment. At first an analysation of a prototype and a calculation of load states was made. A simulation was made in a multi body system in program MSC Adams View. According to load states was made a stress analysis in program MSC Apex Jaguar. All acquired results were analysed and according to them changes were made to the frame construction. Part of this thesis contains drawings documenting.
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Con Rod design and optimization of racing engine
Ulman, Jaroslav ; Zháňal, Lubor (referee) ; Beran, Martin (advisor)
This master thesis describes the design and optimization of connecting rod motor racing car. At the beginning of the whole work is a 3D-model of rods, from which then the whole work is based. Then it analyzes the current model of stress and on the basis of the results are made structural changes to the solution of rods. Newly adapted connecting rod is again analyzed using FEM and newly obtained results are compared with results of the original model of connecting rods. The conclusion deals with sensitivity analysis of selected parameters of rods and their potential effect on the resulting changes in strength connecting rod .Then is an assessment of all results.
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Pendulum jaw crusher 900 x 500
Hladík, František ; Malach, František (referee) ; Malášek, Jiří (advisor)
This diploma thesis is concerned with a construction design of single toggle jaw crusher DCJ 900x500. In the first part, the theoretical background and ways of material disintegration are discussed. The second chapter describes types of material crushers in general, especially jaw crushers and their parts. The third chapter is concerned with calculations and the design of the most important parts of the machine. The fourth part consists of the crusher power calculation, design of the pendulum and its production technology. The last part includes the result of FEM analysis for the particular variant of pendulum production. The thesis also includes drawing documentation of the crusher and the pendulum.
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Citybike
Řehánek, Matěj ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This diploma thesis is focused on design proposal of bicycle frame, which is powered by human force and then strength analysis of designed frame. Vehicle is designed to city and relates to physically handicapped persons and elderly people. This thesis content comparison of different types of bicycles.
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Design of a movable lift for passenger cars
Češpiva, Zdeněk ; Láštic, Daniel (referee) ; Otipka, Václav (advisor)
This bachelor thesis deals with the design of a movable lift for passenger cars. Now we have a great deal of lifts for cars, so the research part focused on their basic division. The main parts of the work include the design of a movable lift, which is then subjected to strength calculations. After these calculations, it can be stated that the designed lift is suitable in terms of safety. The outputs of this work include drawing documentation of the assembly and selected components of the lift.
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Design of the ROPS protective frame
Zimek, Rostislav ; Machálek, Jakub (referee) ; Pokorný, Přemysl (advisor)
This thesis deals with the design of the protective frame protecting occupants in rollover (ROPS). The creation of the calculation model, in order to perform a stress-strain analysis of the frame under the conditions of the homologation test. Execution modal analysis with the inclusion of the mass of the auxiliary device. A motion for a protective frame is designed so that it can be subjected to destructive test according to standards ČSN EN ISO 3471. The strength and modal analysis was carried out using the finite element method (FEM). The diploma thesis was conducted in cooperation with the company, the Tatra Truck a.s.
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Strength analysis and optimization of the two-way excavator MH Plus S cab
Zavadil, Milan ; Janich, Miroslav (referee) ; Pokorný, Přemysl (advisor)
This diploma thesis deals with stress analysis and optimization of two-way cab excavator MH Plus S with total weight of machine 19375 kg. Stress analysis has been performed using the finite element method (FEM). As next step the structure design of protective frame and strength analysis of the cab and protective frame, which protect crew when the machine is rolled over protective structure (ROPS) according to ČSN EN ISO 3471 standard, have been made. The design documentation is a part of diploma thesis. This diploma thesis was conducted in cooperation with the firm Agrotec a.s.
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Numerical analysis of bio-mimetic concept for active flow control on wing surface
Čermák, Jakub ; Navrátil, Jan (referee) ; Popela, Robert (advisor)
V této diplomové práci je provedena optimalizace profilu křídla vybaveného elastickou klapkou umístěnou na horní straně profilu. Optimalizační proces je proveden s vyžitím CFD prostředků, konkrétně URANS metody. V prvních kapitolách je popsána historie vývoje křídla vybaveného pohyblivými klapkami. Práce pokračuje popisem a zdůvodněním volby numerické metody. Vytvoření geometrie a výpočetní sítě je krátce popsáno. V práci je také prezentována validace a verifikace dané výpočetní metody. Případová studie je zaměřena na profil LS(1)-0417mod vybavený 20%, 30% a 40% dlouhou, pevnou kalpkou na různých úhlech náběhu. Aerodynamická účinnost společně s proudovým polem je analyzována. Je provedena nelineární pevnostní analýza s využitím MKP programu za účelem vyhodnocení ohybové tuhosti a deformovaného tvaru elastické klapky tak, aby byly splněný podmínky nutné pro automatické vychýlení.
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