Table of Contents
ISRN Mechanical Engineering
Volume 2011 (2011), Article ID 979532, 9 pages
http://dx.doi.org/10.5402/2011/979532
Research Article

Orthotropic Models of Corrugated Sheets in Finite Element Analysis

Department of Aeronautical and Vehicle Engineering, The Royal Institute of Technology (KTH), Teknikringen 8, 100 44 Stockholm, Sweden

Received 28 January 2011; Accepted 21 March 2011

Academic Editors: F. Findik and A. Tounsi

Copyright © 2011 David Wennberg et al. 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.

Abstract

To reduce computational effort of finite element (FE) calculations a corrugated sheet is replaced with an orthotropic plate. Analytical expressions for the mechanical properties are studied and compared to finite Element calculations in extension, free vibration, and buckling. Good similarity is shown in the stiffened and transverse direction of the corrugated sheet; however, the orthotropic models do not give an accurate twisting behavior. The stiffened direction of the corrugated sheet best matches the analytical expressions. Keeping in mind the presented limitation, the orthotropic model presented herein can be used to drastically reduce the number of elements needed when modelling corrugated sheet with finite elements.