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Tesi etd-03272017-170951


Thesis type
Tesi di laurea magistrale
Author
BIANCHI, LUCA
URN
etd-03272017-170951
Title
Thermo-mechanical Analysis Of Composite Structures In A Sounding Rocket
Struttura
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA AEROSPAZIALE
Commissione
relatore Prof. d'Agostino, Luca
relatore Ing. Bach, Christian
relatore Ing. Sieder, Jan
Parole chiave
  • Thermo-mechanical stress composite structure sound
Data inizio appello
02/05/2017;
Consultabilità
parziale
Data di rilascio
02/05/2020
Riassunto analitico
The current work is based on numerical simulations developed at Tech<br>nische Universit¨at Dresden. Here, within the German STERN Programme,<br>a student sounding rocket is created and then launched.<br>Since composite materials are more popular for aerospace applications nowa<br>days, two new CFRP (Carbon Fiber Reinforced Polymer) parts have been<br>analyzed to substitute aluminum components. This study is indeed focused<br>on their contact with the Liquid Oxygen (LOX) tank and on the level of their<br>consequent thermo-mechanical stress. In fact to maintain the propellant in<br>its liquid phase, the vessel temperature has been fixed at a cryogenic level<br>(-183◦C) making a high temperature gradient to arise.<br>To investigate the level of thermo-mechanical stresses in both structures, a<br>deep mathematical approach is introduced and temperature effects thereby<br>modeled. Finally, AnsysTM has been used to simulate the parts’ behavior<br>under these violent conditions, while considering an adequate safety factor.<br>Its efficacy in simulating thermo-mechanical stresses is then discussed on the<br>base of the obtained results.<br>To further prevent possible damages an insulator has been studied and its<br>reliability proven, while considering the same constrains previously used.<br>Eventually a future test campaign has been designed to better evaluate real<br>thermo-mechanical strains and stresses in both structures.
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