Free vibrations of cylindrical laminated shells – introduction to optimal design in divergence and flutter problems
Authors:
- A. Muc,
- M. Augustyn
Abstract
Aeroelastic properties, such as free vibrations of multilayered composite cylindrical shells, are investigated in the present paper. It is well known that the eigenmode (eigenvalue) analysis is a crucial point in the estimations/calculations of the divergence and flutter speeds characterizng dynamic instability. In this study the maximization problem of eigenfrequencies and eigenmodes is discussed, especially from the point of view of stacking sequences of composite panels. A special attention is focused on two types of the shell wall construction: a) angle-ply ±θ and b) symmetrical discrete laminates built of layers oriented at 0, ±45 and 90. The analytical formulae is derived with the use of the Rayleigh-Ritz method for simply supported cylinders. It allows us to solve the optimum problem easily for angle-ply fibre orientations. For symmetrical laminates with discrete fibre orientations the optimal solutions are searched for using finite element analysis combined with genetic or evolutionary algorithms. The influence of geometrical parameters describing the cylindrical panel is also demonstrated herein.
- Record ID
- CUT218121dc6e924604913d153f88b82355
- Publication categories
- ; ;
- Author
- Journal series
- IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X, Irregular
- Issue year
- 2020
- Vol
- 744
- Pages
- [1-5]
- Article number
- 012004
- Other elements of collation
- rys.; Bibliografia (na s.) - 5; Bibliografia (liczba pozycji) - 21; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 744
- Substantive notes
- Conference 1
- Conference
- 3rd International Conference on Mechanical Engineering and Applied Composite Materials (MEACM 2019), 2019, 22-11-2019 - 23-11-2019, Singapur, Singapur
- Keywords in English
- cylindrical shells, composites, divergence, flutter, aeroelastic
- DOI
- DOI:10.1088/1757-899X/744/1/012004 Opening in a new tab
- URL
- https://iopscience.iop.org/article/10.1088/1757-899X/744/1/012003 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT218121dc6e924604913d153f88b82355/
- URN
urn:pkr-prod:CUT218121dc6e924604913d153f88b82355
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.