Free vibration of perforated cylindrical shells of revolution: Asymptotics and effective material parameters
Loading...
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Other link related to publication
View publication in the Research portal
View/Open full text file from the Research portal
Other link related to publication
Author
Date
2023-01-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
22
1-22
1-22
Series
Computer Methods in Applied Mechanics and Engineering, Volume 403
Abstract
Free vibration characteristics of thin perforated shells of revolution vary depending not only on the dimensionless thickness of the shell but also on the perforation structure. For any given configuration there exists a critical value of the dimensionless thickness below which homogenisation fails. The failure occurs when the modes do not have corresponding counterparts in the non-perforated reference shell. Within the admissible range of thicknesses the uniform effective material parameters are derived with a minimisation process. During the process every observed mode is matched with a corresponding reference one using a problem-specific characterisation. The performance of the derived effective material parameters and hence the minimisation process is demonstrated with an extensive set of numerical experiments. Limitations of the proposed approach are reflected in relation to idealised trommel screen configurations.Description
Publisher Copyright: © 2022 The Author(s)
Keywords
Eigenproblems, Homogenisation, Perforations, Shells of revolution
Citation
Giani , S & Hakula , H 2023 , ' Free vibration of perforated cylindrical shells of revolution: Asymptotics and effective material parameters ' , Computer Methods in Applied Mechanics and Engineering , vol. 403 , 115700 , pp. 1-22 . https://doi.org/10.1016/j.cma.2022.115700
