Title: A modelling strategy and strain concentration analysis for a countersunk hole in an orthotropic plate

Authors: Mohammad Hayajneh; Feras H. Darwish; Ahmad Alshyyab

Addresses: Mechanical Engineering Department, Jordan University of Science and Technology, Irbid 22110, Jordan ' Aeronautical Engineering Department, Jordan University of Science and Technology, Irbid 22110, Jordan ' Aeronautical Engineering Department, Jordan University of Science and Technology, Irbid 22110, Jordan

Abstract: Strain and stress analyses are performed for countersunk holes in orthotropic laminates under uniaxial tension. ANSYS software is implemented to establish finite element (FE) modelling strategies and to run the analysis. It is found that the homogenisation of the material properties can be adopted in the analyses of orthotropic plates, and is reasonably accepted in the strain-based analysis of quasi-isotropic plates. However, ply-by-ply modelling is needed for stress-based analysis of quasi-isotropic laminates. It is also found that in the homogenised models the strain concentration factor is always less than the stress concentration factor with differences less than 4% for 98% of the results.

Keywords: strain concentration factor; countersunk holes; finite element analysis; FEA; orthotropic laminates; modelling; strain analysis; stress analysis; uniaxial tension.

DOI: 10.1504/IJDE.2014.062354

International Journal of Design Engineering, 2014 Vol.5 No.3, pp.175 - 192

Received: 02 Jan 2013
Accepted: 10 Aug 2013

Published online: 04 Jun 2014 *

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