National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Influence of production stresses on the safety of cylindric pressure vessels
Krakovský, Andrej ; Profant, Tomáš (referee) ; Burša, Jiří (advisor)
The bachelor thesis deals with influence of production stresses on the safety of cylindrical pressure vessels. Pressure vessels are made by sheet rolling. In this process the yield strength is exceeded, which leads to creating residual stresses. These stresses can influence final safety of vessels, if any heat treating isn’t done. In this thesis residual stresses are analytically calculated for cylindrical pressure vessel of wagon tank and for theoretical thick-walled vessel. After that safety with and without residual stresses are compared. The last part of this thesis describes method of removing these stresses.
Analysis of methods of modeling welding process by finite element method
Krakovský, Andrej ; Petruška, Jindřich (referee) ; Vosynek, Petr (advisor)
Presented master thesis deals with computational modelling (simulation) of welding process. Its main goal is to determine the residual stresses and deformations arising after welding. SYSWELD and ANSYS are used for simulation, both based on the finite element method. Specifically, the processes of welding fillet and butt welds are solved. Results from both software are compared with each other and verified by experimental results.
Analysis of methods of modeling welding process by finite element method
Krakovský, Andrej ; Petruška, Jindřich (referee) ; Vosynek, Petr (advisor)
Presented master thesis deals with computational modelling (simulation) of welding process. Its main goal is to determine the residual stresses and deformations arising after welding. SYSWELD and ANSYS are used for simulation, both based on the finite element method. Specifically, the processes of welding fillet and butt welds are solved. Results from both software are compared with each other and verified by experimental results.
Influence of production stresses on the safety of cylindric pressure vessels
Krakovský, Andrej ; Profant, Tomáš (referee) ; Burša, Jiří (advisor)
The bachelor thesis deals with influence of production stresses on the safety of cylindrical pressure vessels. Pressure vessels are made by sheet rolling. In this process the yield strength is exceeded, which leads to creating residual stresses. These stresses can influence final safety of vessels, if any heat treating isn’t done. In this thesis residual stresses are analytically calculated for cylindrical pressure vessel of wagon tank and for theoretical thick-walled vessel. After that safety with and without residual stresses are compared. The last part of this thesis describes method of removing these stresses.

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