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Using simulation to predict defects in and cast Al-alloy castings
Šolc, Petr ; Bařinová, Dagmar (referee) ; Čech, Jaroslav (advisor)
The aim of this work is comparing three casting process simulation programs for porosity and microstructure prediction capabilities for die-casting. After confronting these results with experimentally measured data taken from real castings it could be said that simulation is pretty accurate for DAS microstructure prediction and hot-spot areas. Amount of measured porosity could not be compared with predicted values because specimens were not taken from the exact hot-spot areas.
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Prediction of mechanical properties of lamelar iron castings by means of numerical simulation
Filipek, Szymon ; Hrouzek, Petr (referee) ; Roučka, Jaromír (advisor)
The aim of this thesis was to assess the degree of conformity between the mechanical properties evaluated by numerical simulation in software MAGMA5 and the measured values of hardness and ultimate tensile strength of lamellar graphite iron castings. The theoretical part of this thesis deals with the classification of cast iron, structural components of lamellar graphite iron, and the factors defining the resulting mechanical properties of the material. The practical part presents an attempt to find empirical dependencies between input parameters and results evaluated by simulation software. At the end, an analysis of the correlation between reality and simulation software is performed.
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Prediction of mechanical properties of iron castings by means of numerical simulation
Filipek, Szymon ; Kotas, Petr (referee) ; Roučka, Jaromír (advisor)
The aim of this thesis was to design optimization of the amount of alloying elements (copper and molybdenum) in liquid alloy, which improve mechanical properties of the grey cast iron. An adjustment was made to exceed requirement for a minimum strength in the stressed area. The strength limit was exceeded by approximately 60 MPa. Foundry simulation software MAGMAsoft was used for theoretical optimization. Conformity between the mechanical properties evaluated by simulation and the measured values of hardness, tensile strength was confirmed in the first step of the experimental part. A draft of optimization was created in the second step, which led to savings of the alloying costs.
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Prediction of mechanical properties of lamelar iron castings by means of numerical simulation
Filipek, Szymon ; Hrouzek, Petr (referee) ; Roučka, Jaromír (advisor)
The aim of this thesis was to assess the degree of conformity between the mechanical properties evaluated by numerical simulation in software MAGMA5 and the measured values of hardness and ultimate tensile strength of lamellar graphite iron castings. The theoretical part of this thesis deals with the classification of cast iron, structural components of lamellar graphite iron, and the factors defining the resulting mechanical properties of the material. The practical part presents an attempt to find empirical dependencies between input parameters and results evaluated by simulation software. At the end, an analysis of the correlation between reality and simulation software is performed.
|
|
|
Prediction of mechanical properties of iron castings by means of numerical simulation
Filipek, Szymon ; Kotas, Petr (referee) ; Roučka, Jaromír (advisor)
The aim of this thesis was to design optimization of the amount of alloying elements (copper and molybdenum) in liquid alloy, which improve mechanical properties of the grey cast iron. An adjustment was made to exceed requirement for a minimum strength in the stressed area. The strength limit was exceeded by approximately 60 MPa. Foundry simulation software MAGMAsoft was used for theoretical optimization. Conformity between the mechanical properties evaluated by simulation and the measured values of hardness, tensile strength was confirmed in the first step of the experimental part. A draft of optimization was created in the second step, which led to savings of the alloying costs.
|
|
|
Using simulation to predict defects in and cast Al-alloy castings
Šolc, Petr ; Bařinová, Dagmar (referee) ; Čech, Jaroslav (advisor)
The aim of this work is comparing three casting process simulation programs for porosity and microstructure prediction capabilities for die-casting. After confronting these results with experimentally measured data taken from real castings it could be said that simulation is pretty accurate for DAS microstructure prediction and hot-spot areas. Amount of measured porosity could not be compared with predicted values because specimens were not taken from the exact hot-spot areas.
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