DOI QR코드

DOI QR Code

Experimental study of anisotropic behavior of PU foam used in sandwich panels

  • 투고 : 2015.01.24
  • 심사 : 2015.07.08
  • 발행 : 2016.01.20

초록

Polyurethane foam with low density used in sandwich panels is examined in the paper. A series of experiments was carried out to identify mechanical parameters of the foam. Various experimental methods were used for determining the shear modulus, namely a four and three point bending tests (the most common in engineering practice), a double-lap shear test and a torsion test. The behavior of PU in axial compression and tension was also studied. The experiments revealed pronounced anisotropy of the PU foam. An orthotropic model is proposed. Limitations of application of isotropic model of PU in engineering practice is also discussed.

키워드

과제정보

연구 과제 주관 기관 : Poznan University of Technology

참고문헌

  1. Allen, H.G. (1969), Analysis and Design of Structural Sandwich Panels, Pergamon Press, London, UK.
  2. Awad, Z.K. (2013), "Optimization of a sandwich beam design: Analytical and numerical solutions", Struct. Eng. Mech., Int. J., 48(1), 93-102. https://doi.org/10.12989/sem.2013.48.1.093
  3. Caliri Junior, M.F., Soares, G.P., Angelico, R.A., Bresciani Canto, R. and Tita, V. (2012), "Study of an anisotropic polymeric cellular material under compression loading", J. Mater. Res., 15(3), 359-364. https://doi.org/10.1590/S1516-14392012005000034
  4. Chen, L. and Fatt, M.S.H. (2013), "Transversely isotropic mechanical properties of PVC foam under cyclic loading", J. Mater. Sci., 48(19), 6786-6796. https://doi.org/10.1007/s10853-013-7483-6
  5. Chuda-Kowalska, M. (2012), "Influence of longitudinal edge profiling in sandwich panels on interpretation of experimental results", Scientific Research of the Institute of Mathematics and Computer Science, 4(11), 19-27.
  6. Chuda-Kowalska, M. (2013), "Methodology of Experimental Tests of Three-layered Panels with Thin Facings", Poznan University of Technology, Poznan, Poland. [In Polish]
  7. Chuda-Kowalska, M., Pozorski, Z. and Garstecki, A. (2010), "Experimental determination of shear rigidity of sandwich panels with soft core", Proceedings of the 10th International Conference Modern Buildings Materials, Structures and Techniques, Vilnius, Lithuania, May.
  8. Chuda-Kowalska, M., Gajewski, T. and Garbowski, T. (2015), "Mechanical characterization of orthotropic elastic parameters of a foam by the mixed experimental-numerical analysis", J. Theor. Appl. Mech., 53(2), 383-394.
  9. Daniel, I. and Ishai, O. (1994), Engineering Mechanics of Composite Materials, Oxford University Press.
  10. Davies, J.M. (Editor) (2001), Lightweight Sandwich Constructions, Blackwell Science Ltd.
  11. EN 14509 (2013), Self-supporting double skin metal faced insulating panels - Factory made products - Specifications.
  12. Gibson, R. (2011), "A simplified analysis of deflections in shear deformable composite sandwich beams", J. Sandw. Struct. Mater., 13(5), 579-588. https://doi.org/10.1177/1099636211408254
  13. Gibson, L. and Ashby, M. (1997), Cellular Solids. Structure and Properties, Cambridge University Press.
  14. Gosowski, B. and Gosowski, M. (2014), "Exact solution of bending problem for continuous sandwich panels with profiled facings", J. Construct. Steel Res., 101, 53-60. https://doi.org/10.1016/j.jcsr.2014.04.033
  15. Hassinen, P., Martikainen, L. and Berner, K. (1997), "On the design and analysis of continuous sandwich panels", Thin-Wall. Struct., 29(1-4), 129-139. https://doi.org/10.1016/S0263-8231(97)00019-0
  16. Janus-Michalska, M. and Pecherski, R.B. (2003), "Macroscopic properties of open-cell foams based on micromechanical modelling", Technische Mechanik, 23(2/4), 221-231.
  17. Jin, H., Lu, W.-Y., Scheffel, S. and Hinnerichs, T.D. (2007), "Full-field characterization of mechanical behavior of polyurethane foams", Int. J. Solid. Struct., 44(21), 6930-6944. https://doi.org/10.1016/j.ijsolstr.2007.03.018
  18. Juntikka, R. and Hallstorm, S. (2007), "Shear characterization of sandwich core materials using four-point bending", J. Sandw. Struct. Mater., 9(1), 67-94. https://doi.org/10.1177/1099636207070574
  19. Liu, Q. and Subhash, G. (2004), "A phenomenological constitutive model for foams under large deformations", Polym. Eng. Sci., 44(3), 463-473. https://doi.org/10.1002/pen.20041
  20. Mills, N.J. (2007), "Polymer Foams Handbook. Engineering and Biomechanics Applications and Design Guide", Butterworth - Heinemann.
  21. Plantema, F.J. (1966), Sandwich Construction, John Wiley & sons, New York, NY, USA.
  22. Pokharel, N. and Mahendran, M. (2005), "An investigation of lightly profiled sandwich panels subjected to local buckling and flexural wrinkling effects", J. Construct. Steel Res., 61(7), 984-1006. https://doi.org/10.1016/j.jcsr.2004.12.008
  23. Rzeszut, K., Garstecki, A. and Czajkowski, A. (2014), "Parameter identification in FEM models of thin-walled purlins restrained by sheeting", Rec. Adv. Computat. Mech., CRC Press/Balkema, pp.121-128.
  24. Studzinski, R., Pozorski, Z. and Garstecki, A. (2013), "Sensitivity analysis of sandwich beams and plates accounting for variable support conditions", Bulletin of the Polish Academy of Sciences - Technical Sciences, 61(1), 201-210. https://doi.org/10.2478/bpasts-2013-0019
  25. Studzinski, R., Pozorski, Z. and Garstecki, A. (2015), "Structural behavior of sandwich panels with asymmetrical boundary conditions", J. Construct. Steel Res., 104, 227-234. https://doi.org/10.1016/j.jcsr.2014.10.011
  26. Subramanian, N. and Sankar, B.V. (2012), "Evaluation of micromechanical methods to determine stiffness and strength properties of foams", J. Sandw. Struct. Mater., 14(4), 431-447. https://doi.org/10.1177/1099636212441475
  27. Tita, V. and Caliri Junior, M.F. (2012), "Numerical simulation of anisotropic polymeric foams", Latin American Journal of Solids and Structures, 9(2), 259-279.
  28. Xie, Z., Yan, Q. and Li, X. (2014), "Investigation on low velocity impact on a foam core composite sandwich panel", Steel Compos. Struct., Int. J., 17(2), 159-172. https://doi.org/10.12989/scs.2014.17.2.159
  29. Zenkert, D. (1995), An Introduction to Sandwich Construction, EAMS.
  30. Ziolkowski, A. (2006), "Simple shear test in identification of constitutive behaviour of materials submitted to large deformations - hyperelastic materials case", Eng. Transact., 54(4), 251-269.

피인용 문헌

  1. Anisotropic Large Deformation and Fatigue Damage of Rubber-fabric Braid Layered Composite Hose vol.173, 2017, https://doi.org/10.1016/j.proeng.2016.12.097
  2. Optimal design of sandwich panels with hybrid core 2019, https://doi.org/10.1177/1099636217742574
  3. Behavior of light weight sandwich panels under out of plane bending loading vol.21, pp.4, 2016, https://doi.org/10.12989/scs.2016.21.4.775
  4. Analysis of large deformation and fatigue life of fabric braided composite hose subjected to cyclic loading vol.21, pp.4, 2016, https://doi.org/10.12989/scs.2016.21.4.949
  5. Microstructural characterisation and experimental determination of a multiaxial yield surface for open-cell aluminium foams vol.131, 2017, https://doi.org/10.1016/j.matdes.2017.06.017
  6. Design of stepwise foam claddings subjected to air-blast based on Voronoi model vol.23, pp.1, 2016, https://doi.org/10.12989/scs.2017.23.1.107
  7. Vibration analysis of honeycomb sandwich composites filled with polyurethane foam by Taguchi Method vol.28, pp.4, 2016, https://doi.org/10.12989/scs.2018.28.4.461
  8. Factors governing dynamic response of steel-foam ceramic protected RC slabs under blast loads vol.33, pp.3, 2016, https://doi.org/10.12989/scs.2019.33.3.333