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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
Supervisors
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
nische Universit¨at Dresden. Here, within the German STERN Programme,
a student sounding rocket is created and then launched.
Since composite materials are more popular for aerospace applications nowa
days, two new CFRP (Carbon Fiber Reinforced Polymer) parts have been
analyzed to substitute aluminum components. This study is indeed focused
on their contact with the Liquid Oxygen (LOX) tank and on the level of their
consequent thermo-mechanical stress. In fact to maintain the propellant in
its liquid phase, the vessel temperature has been fixed at a cryogenic level
(-183◦C) making a high temperature gradient to arise.
To investigate the level of thermo-mechanical stresses in both structures, a
deep mathematical approach is introduced and temperature effects thereby
modeled. Finally, AnsysTM has been used to simulate the parts’ behavior
under these violent conditions, while considering an adequate safety factor.
Its efficacy in simulating thermo-mechanical stresses is then discussed on the
base of the obtained results.
To further prevent possible damages an insulator has been studied and its
reliability proven, while considering the same constrains previously used.
Eventually a future test campaign has been designed to better evaluate real
thermo-mechanical strains and stresses in both structures.
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