Modes of vibration of unsymmetric multilayered composite plates with curvilinear fibres

• Type: Article in International Conference Proceedings Book
• Date: 2014

Authors

Yazdani, S (Author) Other; Pedro Leal Ribeiro (Author) FEUP

Conference proceedings International

Title: EURODYN 2014: IX INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS

Pages: 1789-1793

9th International Conference on Structural Dynamics (EURODYN)

Porto, PORTUGAL, JUN 30-JUL 02, 2014

Indexing

Scopus - 1 Citation

Other information

Authenticus ID: P-00M-747

Abstract (EN): The use of curvilinear fibres to reinforce composite plates leads to Variable Stiffness Composite Laminates (VSCL) and opens the design space, in some cases allowing for more efficient designs than when straight fibres are used. Often Equivalent Single Layer (ESL) theories are employed to study the behaviour of composite laminates and there are a few papers dealing with VSCL symmetric plates. On the other hand, the number of works on unsymmetric plates is much smaller. Here, a new model based on a p-version finite element approach is presented for VSCLs which are not necessarily symmetric about their middle plane. The element follows a layerwise theory, based on a linear zig-zag variation of displacements through the thickness of the laminate. The model developed allows to, quite accurately, account for cross-sectional warping; therefore, thick VSCL laminates can be investigated. Vibrations are of interest here, and natural frequencies and mode shapes of vibration of unsymmetric VSCL plates are computed. First the model is verified by comparisons with published results; after, the modes of vibration of unsymmetric VSCL plates are investigated.

Language: English

Type (Professor's evaluation): Scientific