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Strip rolling
Kornherr, Milan ; Suchánek, Miroslav (referee) ; Petruška, Jindřich (advisor)
This bachelor thesis focuses on theoretical analysis of the role of plastic deformation in the process of rolling strips. The work explains progress of stress waveform during straining and lightening. This work also focuses on computing of spring loading and bending moment due to specific curvature of strips. Report at the end of this work includes an illustrative example with executional program.
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Optimization of an aircraft wing rib
Kopřiva, Lubomír ; Suchánek, Miroslav (referee) ; Petruška, Jindřich (advisor)
Topology optimization is a method providing new direction in designing of a technical objects. The aim of topology optimization is to find optimal distribution of material in design space. This diploma thesis is focused on optimization of aircraft wing rib num.6 of the airplane EV-55 using a software HW/Optistruct 7.0 implemented in a software package HyperWorks 7.0. The optimization of the rib was calculated under four different load cases. Resulting shapes of the rib were then tested by strenght calculations in software ANSYS 10.0. Finally, the obtained data of weights of optimized ribs were compared with the weight of the original rib.
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Strain, stress and strength analysis of the high pressure compound vessel by finite element method
Koutský, Jiří ; Suchánek, Miroslav (referee) ; Vrbka, Jan (advisor)
Strength and strain analysis of high pressure compound vessel, which is used to produce superhard materials (for example synthetic diamond). This work was elaborated to compare the stresses and strains calculated by Prof. Jan Vrbka making use of the FEM program ‘Prokop’17 years ago with those gained with the contemporary FEM Ansys program. The vessel is loaded by internal pressure of size 6 GPa. The elastic-plastic material be-haviour is taken into account. Real value of friction between rings and non-uniform temperature field is included into the calculation. The process of assembling the compound vessel is simulated step by step.
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Strength design of the press frame construction and the compliance calculation at the load position.
Dobeš, Martin ; Suchánek, Miroslav (referee) ; Vrbka, Jan (advisor)
The bachelor's thesis is intent on the calculation of a plane frame which is used for hydraulic press. The theoretical basis for the calculation is mentioned in the first part of this thesis. The calculation of a concrete exercise according to the task set in the bachelor's thesis is in the second part. As a frame model we used a plane frame with two crossbeams. The load on the plane frame is interpreted by solitary forces which work upon the crossbeams. The calculation uses the Castiglian's theorem to specify the unknown parameters from deformation conditions. The calculation considers flexion energy of tensity. In the next part of the calculation, we consider the energy of tensity caused by vertical and normal shear for comparison. Coordinates of the load position can be changed at will. The final results of the thesis are a concrete frame proposal and an examination of pliability of the frame. The calculation was carried out in MAPLE 11 software.
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Planar frames and curved bars. Study of the significance of the influence of normal and shear forces on deformation characteristics of the centerline
Donát, Martin ; Fuis, Vladimír (referee) ; Suchánek, Miroslav (advisor)
The Aim of this thesis is to write up the relevancy of particular resultant inner effects (further denoted as RIE) on the central line bars and plane frames deformation. The relevancy of particular RIE on the choice deformation characteristic bars in dependence on the ration of central line length and characteristic cross-section proportions, support type and bar load is analyzed in the sample examples. We solve a problem whether a bent bar should be comprehended as a shall bent or as a forte bent bar and we also analyze how does the stiffness shift influence the fractional bar deformation. When solving the sample examples we suppose that the bar expectations are fulfilled. When determining the central line deformation we use the Castiglianano’s theorem because it enables to include supplies of particular RIE.
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Loading of the crane-runway girder
Vrbka, Dušan ; Fuis, Vladimír (referee) ; Suchánek, Miroslav (advisor)
The main purpose of this bachelor project is to solve Loading of the crane-runway girder. First of all, we located the possible dangerous places where we solved the running of Shear and moment diagrams which depends on distance of loading forces p from the beginning of the crane-runway. For the mathematic solutions, we used specialized software MAPLE. The main advantage of this software is the ability of the analytic analysis. We introduced the method of the solving the crane-runway girder on three supports. The final part shows the main results and highlights the most strained parts with suggestions for decrease loading level of strained parts.
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Proposal of a multilayer pressure vessel
Klement, Jan ; Suchánek, Miroslav (referee) ; Burša, Jiří (advisor)
The main topic of this bachelor thesis is implementation of optimal constructional design of pressure vessel on the given pressure and inside and outside radius. Own strenght calculation is done by analytic method. In the conclusion the thesis devoting of literature search of ways analytic analysis of multilayer pressure vessel.
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