polito.it
Politecnico di Torino (logo)

Efficient introduction of stiffness and density mistuning in the reduced order models of bladed disks

Giacomo Saletti

Efficient introduction of stiffness and density mistuning in the reduced order models of bladed disks.

Rel. Stefano Zucca, Seyyedmehrdad Pourkiaee. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Aerospaziale, 2022

[img]
Preview
PDF (Tesi_di_laurea) - Tesi
Licenza: Creative Commons Attribution Non-commercial No Derivatives.

Download (3MB) | Preview
Abstract:

This thesis focuses on a detailed implementation of the Relative Cyclic Component Mode Synthesis (RCCMS) approach on cyclically symmetrical systems with an in depth development of the algebra involved. Subsequently, it is showed how stiffness and density mistuning can be efficiently introduced in the final Reduced Order Models (ROMs). Eventually, numerical simulations are presented to reveal the accuracy of the RCCMS approach in predicting natural frequencies, modeshapes and linear forced response of the reduced systems of a bladed disk. In conclusion, the performances of the systems built with the two types of mistuning introduced are compared to show how, in some cases, density mistuning can be a valid alternative to stiffness mistuning.

Relatori: Stefano Zucca, Seyyedmehrdad Pourkiaee
Anno accademico: 2022/23
Tipo di pubblicazione: Elettronica
Numero di pagine: 64
Soggetti:
Corso di laurea: Corso di laurea magistrale in Ingegneria Aerospaziale
Classe di laurea: Nuovo ordinamento > Laurea magistrale > LM-20 - INGEGNERIA AEROSPAZIALE E ASTRONAUTICA
Aziende collaboratrici: NON SPECIFICATO
URI: http://webthesis.biblio.polito.it/id/eprint/24105
Modifica (riservato agli operatori) Modifica (riservato agli operatori)