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Trailer frame VARIANT 200 for transport cabel spools
Blažek, Jaroslav ; Kašpárek, Jaroslav (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this thesis is an analysis of the construction of a cable trailer VARIANT 200. For the calculation of load states was used a multi body system in program MSC.ADAMS. The results from these calculations were used as lifting conditions for strength control with finite element method (FEM). All acquired results were analysed and according to them changes were made to the frame construction. Part of this thesis contains drawings documenting the above mentioned changes.
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Trailer frame PILLAR for transport concrete pillars
Urban, Jiří ; Kašpárek, Jaroslav (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this thesis is an analysis of the construction of a trailer used for transporting concrete pillars. The main part of the thesis is focused on frame construction. For the calculation of load states a multi body system was used, whereby a simulation of transport in terrain was performed. The results from these calculations will be used as limiting conditions for strength control. The method of solution is the finite element method. All acquired results will be analysed and according to them changes will be made to the frame construction. In addition to this, the thesis contains drawings documenting the above-mentioned changes.
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Computational modelling of stress-strain states in tyres
Lavický, Ondřej ; Profant, Tomáš (referee) ; Burša, Jiří (advisor)
Work occupies computational modelling mechanical behavior elastomers and composits with rubber matrix and their utilization for compute model of tire creation. MATADOR tire 165/65 R13 Axisymetric 2D model was created in two geometric variants. For the computational modeling is applying the Finite element method (FEM). The model was in different variants distinctive grade of modeling material. At first was done inner pressure analyst impact on deformation of each of model. Then was count influence on tire load with angular velocity meanwhile with inner pressure. The impact thickness of tire protector layer on global deformation tyre casing was verified too.
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Optimalization and calculation of transition duct design
Havlíček, Tomáš ; Náhlík, Luboš (referee) ; Paloušek, David (advisor)
The goal of this thesis is to create a methodic and a system, which would involve customized computing and consequent design of the transition duct using input and applied data effectively and would achieve optimized set of parameters. The methodic described in the thesis is applied on transition duct within air main ducting between the filter and gas turbine. Transition duct is a huge mounted assembly consisting of welded parts. NX 5 application was chosen as system environment of the thesis. Master model is a root for both design model and computing model. Weight and material optimization is a desired result which will serve as basis for designing. It is not the goal of this thesis to create one perfect computation model BUT to create a methodic, which would be manageable by any designer equipped by basic knowledge of engineering.
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Stress and strain analysis of connecting rod in combustion engine using FEM
Biječek, Tomáš ; Hutař, Pavel (referee) ; Vaverka, Michal (advisor)
In this diploma thesis is completed the FEM analysis of connecting rod in combustion engine Briggs & Stratton of the garden lawnmower. Within the frame of computing in the FEM system ANSYS Workbench is solved static structural strein and stress analysis, buckling analysis a fatigue also. The boundary conditions for FEM computing come out from the kinematic and dynamic analysis of the crank-slider mechanism in combustion engine. The 3-D models of the crank-slider mechanism are created in parametric SolidWorks modeller. Own construction variants of the connecting rod based on results of FEM analysis are also designed.
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Comparative analysis of notched machine parts using photoelasticity and FEM
Bittner, Jiří ; Náhlík, Luboš (referee) ; Vaverka, Michal (advisor)
The diploma thesis deals with comparative analysis of stress and strain of notched machine parts using photoelasticity and finite element method (FEM). Experimental and numerical comparative analyses were performed on three models: hook, J shaped bracket and 3-point bending beam with notch. Equivalent stresses, principal stresses and its directions were analyzed. The emphasis is given on photoelasticity, the theory and principles of photoelasticity are described in more detail. FEM analysis was performed using software ANSYS 11. The work presented includes the preparation of polariscope in the laboratory of Institute of machine and industrial design in order to use it in tutorials focused on experimental stress analysis using photoelasticity.
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Calculation of storage tank structure for sewage treatment plant
Pečenka, Lukáš ; Maňas, Pavel (referee) ; Prokeš, František (advisor)
This diploma thesis is focused on finite element analysis of storage tank. The designed computational model in this work is based on existing storage tank documentation. Diploma thesis is divided into parts. Introduction part consists of various storage tanks types description and basis of finite element method. Next part contains methodical process of computational model designs, its characteristics and purpose. Designed models are loaded with set of specific border conditions. These tests are evaluated and described more closely. After that, the table of results is created and von Misses stress of all models is compared. The best model matching real construction is selected after this compare. The final part of this work consists of suggested construction changes based on the analysis results.
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Parametric study of behavior of the structure of the wine cellar
Hajn, Jakub ; Janků, Hynek (referee) ; Horák, Vladislav (advisor)
In traditional wine village Bořetice recently occurred to serious disturbances on structures of wine cellars. These failures were caused by, among other things, changes in the properties of the rock environment. This work focuses on the implementation of parametric studies in terms of changing the properties of rock (soil) from the viewpoint of structural arrangement of the wine cellar.
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Analysis of stress state and failure in test specimens used for determination of fracture-mechanical parameters of quasi-brittle materials
Holušová, Táňa ; Seitl,, Stanislav (referee) ; Veselý, Václav (advisor)
The thesis is focused on a test on determination of the fracture-mechanical parameters of quasi-brittle materials, especially concrete. What is referred to as the wedge-splitting test is considered, for which a variety of shapes of notched specimen can be used. This work is exclusively focused on the cylinder-shaped specimen of diameter 150 mm and breadth of 100 mm. The test is performed virtually using Atena 2D FEM software. Progress of failure is observed during loading of the specimen for various notch lengths. The amount of energy released for the development the failure outside of the tested cross-sectional area (weakened by the notch) is quantified and the size of the fracture process zone is investigated. The described analysis is performed for several material sets witch differ in cohesive properties of the quasi-brittle material expressed via the so-called characteristic length. Suitable proportions of the test specimen are sought, in order to avoid the failure and thus also the energy dissipation outside of the specimen ligament area during the experimental tests, which shall lead to more accurate estimates of fracture-mechanical parameters of the tested material.
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