Design and Testing of Sandwich Structures with Different Core Materials

  • Henrik HERRANEN Tallinn University of Technology
  • Ott PABUT Tallinn University of Technology
  • Martin EERME Tallinn University of Technology
  • Jüri MAJAK Tallinn University of Technology
  • Meelis POHLAK Tallinn University of Technology
  • Jaan KERS Tallinn University of Technology
  • Mart SAARNA Tallinn University of Technology
  • Georg ALLIKAS Tallinn University of Technology
  • Aare ARUNIIT Tallinn University of Technology
Keywords: sandwich structures, 4-point bending tests, FEA, virtual testing, multicriteria optimization

Abstract

The purpose of this study was to design a light-weight sandwich panel for trailers. Strength calculations and selection of different materials were carried out in order to find a new solution for this specific application. The sandwich materials were fabricated using vacuum infusion technology. The different types of sandwich composite panels were tested in
4-point bending conditions according to ASTM C393/C393M. Virtual testing was performed by use of ANSYS software to simplify the core material selection process and to design the layers. 2D Finite element analysis (FEA) of 4-point bending was made with ANSYS APDL (Classic) software. Data for the FEA was obtained from the tensile tests of glass fiber plastic (GFRP) laminates. Virtual 2D results were compared with real 4-point bending tests.  3D FEA was applied to virtually test the selected sandwich structure in real working conditions. Based on FEA results the Pareto optimality concept has been applied and optimal solutions determined.

DOI: http://dx.doi.org/10.5755/j01.ms.18.1.1340

Published
2012-03-15
Section
METALS, ALLOYS, COATINGS