Next Article in Journal
Aerodynamic Design of a Laval Nozzle for Real Gas Using Hodograph Method
Previous Article in Journal
Fast and Robust Flight Altitude Estimation of Multirotor UAVs in Dynamic Unstructured Environments Using 3D Point Cloud Sensors
Previous Article in Special Issue
Unsteady Lifting Line Theory Using the Wagner Function for the Aerodynamic and Aeroelastic Modeling of 3D Wings
Article Menu
Issue 3 (September) cover image

Export Article

Open AccessArticle
Aerospace 2018, 5(3), 95; https://doi.org/10.3390/aerospace5030095

Natural Frequencies of Rectangular Laminated Plates—Introduction to Optimal Design in Aeroelastic Problems

Institute of Machine Design, Cracow University of Technology, 31-155 Kraków, Poland
Received: 7 August 2018 / Revised: 28 August 2018 / Accepted: 2 September 2018 / Published: 10 September 2018
(This article belongs to the Special Issue Aeroelasticity)
Full-Text   |   PDF [4808 KB, uploaded 10 September 2018]   |  

Abstract

Free vibration (or eigenvalue analysis) is a prerequisite for aeroelastic analysis. For divergence analysis, slope influence coefficients (rotation at point i due to unit load at point j) are calculated using free vibration mode shapes and corresponding frequencies. The lowest eigenvalue is of interest and gives the divergence speed. The present paper considers the maximization problem of eigenfrequencies for composite panels. The influence of boundary conditions and constant or variable stiffnesses on optimization results are investigated herein. A new convenient set of design variables is employed in the analysis. The computations are carried out with the use of the Rayleigh–Ritz method and Finite Element analysis (2D quadrilateral and 3D solid elements). View Full-Text
Keywords: free vibrations; laminated plates; optimization free vibrations; laminated plates; optimization
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Muc, A. Natural Frequencies of Rectangular Laminated Plates—Introduction to Optimal Design in Aeroelastic Problems. Aerospace 2018, 5, 95.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Aerospace EISSN 2226-4310 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top