|
|
Design and stress analysis of temperature and force sensor in hot rolling process.
Nejedlý, Pavel ; Pohanka, Michal (referee) ; Horský, Jaroslav (advisor)
In the process of hot rolling is roll surface thermo-mechanically stressed. To define lifetime of roll or to increase it by change of thermal mode, temperatures and forces acting on this roll need to be known. For this purpose should be used sensors, that are placed near by surface of roll. Aim of the first part of diploma thesis is to debug 2D computing model (MKP) to achieve the match of temperature graphs with experimentally measured values, which was recorded by temperature sensors in real process of rolling. In the second part the same temperature boundary conditions are applied on 3D model, which is used to solve mechanical strength check of the temperature sensor. The last part of thesis is design and verification of mechanical strength of the designed force sensor. The used boundary conditions were acquired in Laboratory of heat transfer and flow. The computing system ANSYS 11 is used to design a model of geometry and numerical calculation. This diploma thesis will be used as donating solution for the granted project, which started in this year with Laboratory of heat transfer and flow partnership.
|
|
| |
|
|
Solution techniques for the frequency assignment problem
Ježek, Lukáš ; Nejedlý, Pavel (advisor) ; Lidický, Bernard (referee)
Wireless communication is used in a growing number of situations, for example in mobile telephony, wireless networks (WLAN), television and radio broadcasting, satellite communication or in military operations. It is necessary to solve the frequency assignment problem in each of the above situations, so that the communicating sides get connected and their connection is not interfered by other communicating subjects and connections. It is very important to be able to solve the problem well since the number of the participants in the wireless communication is rapidly growing. This work provides introduction to the frequency assignment problem along with the overview of the most frequently used techniques for solving it. Selected methods are described in more details and are also implemented in the enclosed program.
|
|
|
Solution techniques for the frequency assignment problem
Ježek, Lukáš ; Lidický, Bernard (referee) ; Nejedlý, Pavel (advisor)
Wireless communication is used in a growing number of situations, for example in mobile telephony, wireless networks (WLAN), television and radio broadcasting, satellite communication or in military operations. It is necessary to solve the frequency assignment problem in each of the above situations, so that the communicating sides get connected and their connection is not interfered by other communicating subjects and connections. It is very important to be able to solve the problem well since the number of the participants in the wireless communication is rapidly growing. This work provides introduction to the frequency assignment problem along with the overview of the most frequently used techniques for solving it. Selected methods are described in more details and are also implemented in the enclosed program.
|
|
| |
|
|
Design and stress analysis of temperature and force sensor in hot rolling process.
Nejedlý, Pavel ; Pohanka, Michal (referee) ; Horský, Jaroslav (advisor)
In the process of hot rolling is roll surface thermo-mechanically stressed. To define lifetime of roll or to increase it by change of thermal mode, temperatures and forces acting on this roll need to be known. For this purpose should be used sensors, that are placed near by surface of roll. Aim of the first part of diploma thesis is to debug 2D computing model (MKP) to achieve the match of temperature graphs with experimentally measured values, which was recorded by temperature sensors in real process of rolling. In the second part the same temperature boundary conditions are applied on 3D model, which is used to solve mechanical strength check of the temperature sensor. The last part of thesis is design and verification of mechanical strength of the designed force sensor. The used boundary conditions were acquired in Laboratory of heat transfer and flow. The computing system ANSYS 11 is used to design a model of geometry and numerical calculation. This diploma thesis will be used as donating solution for the granted project, which started in this year with Laboratory of heat transfer and flow partnership.
|
guest ::
RSS feed.