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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Analysis of the influence of different weld geometry model on fatigue strength of a weld
 Holeta, Aleš ; Pokorný, Jan (referee) ; Vosynek, Petr (advisor)
The work was focus on the analysis of the fatigue life of a simple welded joint. The main goal of this work was to compare different methods of evaluation of welded joints and different methods of creating a geometry of computational models. Calculations were per-formed analytically and numerically. The numerical solution was performed using FEM. The problem was analysed in the open-source program Salome Meca and in the commercial pro-gram ANSYS Workbench.
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Comparative analysis of light holder lifetime assessment methods
 Holeta, Aleš ; Pokorný, Jan (referee) ; Vosynek, Petr (advisor)
This thesis addresses the topic of determining the fatigue life of a thin-walled holder fender and flashlight under variable loads. The aim of the thesis is to make a search study on the fatigue life of welded parts with respect to the thin-walled design of structures. The main objective is to evaluate the suitability of using different methods of fatigue life assessment on the holder fender and flashlight. The calculated fatigue lifetimes are confronted with experimentally obtained fatigue life-times. The fatigue lifetimes are determined by methods evaluating welded joints based on structural stresses and notch stresses. Finite element analysis was performed in the open-source programs Salome and Code_Aster. The modelling of the holder fender and flashlight geometry was performed at several levels. Based on the results, the most efficient method for the design of welded parts is the structural stress linearization method (also called “master S-N curve method”), which achieves comparable results to the effective notch stress method (considered as a reference), but with a multiply lower time consumption.
Detailed record
Analysis of the influence of different weld geometry model on fatigue strength of a weld
 Holeta, Aleš ; Pokorný, Jan (referee) ; Vosynek, Petr (advisor)
The work was focus on the analysis of the fatigue life of a simple welded joint. The main goal of this work was to compare different methods of evaluation of welded joints and different methods of creating a geometry of computational models. Calculations were per-formed analytically and numerically. The numerical solution was performed using FEM. The problem was analysed in the open-source program Salome Meca and in the commercial pro-gram ANSYS Workbench.
Detailed record

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