This study aimed to develop a knowledge about material parameters identification of the foam core and numerical modelling of the sandwich panels to accurately predict the behaviour of this kind of structures. The polyisocyanurate foam (PIR) with low density used in sandwich panels dedicated to civil engineering is examined in the paper. A series of experiments (tensile, compression and bending tests) were carried out to identify its mechanical parameters. To determine the heterogeneity of analysed foam a Digital Image Correlation (DIC) technique, named Aramis, is applied in the paper. The results obtained from FE analyses are compared with the experimental results on full-size plates carried out by the author and proper conclusions are drawn.
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1. Awad, ZK 2013. Optimization of a sandwich beam design: analytical and numerical solutions. Structural Engineering and Mechanics48(1), 93-102.
2. Bennai, R, Atmane, HA and Tounsi A 2015. A new higher-order shear and normal deformation theory for functionally graded sandwich beams. Steel & Composite Structures19(3), 521-546.
3. Chuda-Kowalska, M and Malendowski, M 2016. Sensitivity analysis of behaviour of sandwich plate with PU foam core with respect to boundary conditions and material model. Chapter in Advances in Mechanics: Theoretical, Computational and Interdisciplinatory Issues. Editors: Kleiber, M, Burczyński, T, Wilde, K, Górski, J, Winkelmann, K, Smakosz, Ł, CRC Press/Balkema Taylor & Francis Group.
4. Chuda-Kowalska, M and Urbaniak, M 2016. Orthotropic Parameters of PU Foam Used in Sandwich Panels. Chapter IV in Continuous Media with Microstructure 2, editors: Albers B, Kuczma M, Springer International Publishing, 343-353.
7. EN 14509, 2013. Self-supporting double skin metal faced insulating panels – Factory made products – Specifications.
8. Gibson, L and Ashby M 1997. Cellular Solids. Structure and Properties. Cambridge University Press.
9. Gibson, R 2011. A simplified analysis of deflections in shear deformable composite sandwich beams. Journal of Sandwich Structures and Materials13(5), 579-588.
10. Janus-Michalska, M and Pecherski RB 2003. Macroscopic properties of open-cell foams based on micromechanical modelling. Technische Mechanik, 23, 2/4, 221-231.
11. Liu, Q and Subhash, G 2004. A phenomenological constitutive model for foams under large deformations. Polymer Engineering and Science44(3), 463–473.
12. Long, S, Yao, X, Wang, H and Zhang, X 2018. Failure analysis and modeling of foam sandwich laminates under impact loading. Composite Structures, 197, 10-20.
13. Mills, NJ 2007. Polymer Foams Handbook. Engineering and Biomechanics Applications and Design Guide. Butterworth – Heinemann.
14. Ozturk, UE and Anlas, G 2009. Energy absorption calculations in multiple compressive loading of polymeric foams. Materials & Design30, 15-22.
15. Pokharel, N and Mahendran, M 2005. An investigation of lightly profiled sandwich panels subjected to local buckling and flexural wrinkling effects. Journal of Constructional Steel Research61, 984-1006.
16. Poortabib, A and Maghsoudi, M 2014. The analytical solution for buckling of curved sandwich beams with a transversely flexible core subjected to uniform load. Structural Engineering and Mechanics52(2), 323-349.
17. Studziński, R, Pozorski, Z and Garstecki, A 2015. Structural behavior of sandwich panels with asymmetrical boundary conditions. Journal of Constructional Steel Research104, 227–234.
18. Subramanian, N and Sankar, BV 2012. Evaluation of micromechanical methods to determine stiffness and strength properties of foams. Journal of Sandwich Structures and Materials14(4), 431-447.
19. Xie, Z, Yan, Q and Li, X 2014. Investigation on low velocity impact on a foam core composite sandwich panel. Steel & Composite Structures, 17(2), 159-172.