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Sandviç Uzun Dikdörtgen Plakların Statik Çökmelerinin Analizi

Year 2018, Volume: 4 Issue: 1, 57 - 66, 30.04.2018

Abstract

Bu çalışmada düzgün yayılı yanal yük etkisindeki sandviç
uzun dikdörtgen plakların statik çökmeleri incelenmiştir. Yüzey malzemesi
olarak farklı sıralanmış simetrik katmanlı kuazi-izotropik (yarı izotropik)
karbon/epoksi malzeme ve öz (çekirdek) malzemesi için ise balsa ağacı
seçilmiştir. Plak kenarlarının ankastre ve basit mesnetlenmiş halleri
incelenmiştir. Öz malzemesinin ve dış cidarların kalınlığına, dış cidarların
farklı katman dizilimine ve sınır koşullarına sahip sandviç plakların maksimum
çökmeleri, uzun plak yaklaşımıyla incelenmiştir. Sonuçlar, Sonlu Elemanlar
Yöntemi (SEY) temelli nümerik çalışmayla karşılaştırılmış ve birbirini
sağlamıştır. Aynı ağırlığa sahip sandviç plakların maksimum çökmeleri
araştırılmış, öz malzemesinin ince dış cidarların kalın olduğu durumda maksimum
çökmeler daha fazla bulunmuştur.

References

  • [1] Sezgin FA. 2008. Mechanical behavior and modelling of honeycomb cored laminated fiber/polymer sandwich structures. MSc thesis, İzmir Institute of Technology, İzmir.
  • [2] Borrega M. and Gibson L.J. 2015. Mechanics of balsa (Ochroma pyramidale) wood. Mechanics of Material. 84, 75-90.
  • [3] ASM Handbook Volume 21 Composites, 2001, ASM International Handbook Committee.
  • [4] Noor A.K., Burton W.S. and Bert C.W. 1996. Computational models for sandwich panels and shells. Appl Mech Rev vol 49, no 3, March 1996.
  • [5] Kreja I. 2011. A literature review on computational models for laminated composite and sandwich panels, Cent. Eur. J. Eng. 1(1) 59-80.
  • [6] Kant T and Swaminathan K. 2002. Analytical solutions for the static analysis of laminated composite and sandwich plates based on a higher order refined theory, - Composite Structures, Volume 56, Issue 4, June 2002, Pages 329-344.
  • [7] Kumar A.A. 2018. Ultimate Strength Analysis of Laminated Composite Sandwich Plates, Structures, Volume 14, June 2018, Pages 95-110.
  • [8] Lin G., Zhang P., Liu J. and Li J. 2018. Analysis of laminated composite and sandwich plates based on the scaled boundary finite element method, Composite Structures, Volume 187, 1 March, Pages 579-592.
  • [9] Kollar LP and Springer GS. 2007. Mechanics of composite structures. Cambridge University Press, USA.
  • [10] Matlab.
  • [11] Abaqus /CAE 6.9-2 Student Edition.
  • [12] Tsai SW. 1988. Composites design, 4th Edition, Think Composites, Dayton, OH.
  • [13] Newaz G., Mayeed M. and Rasul A. 2016. Characterization of balsa wood mechanical properties required for continuum damage mechanics analysis. J. of Materials: Design and Applications, 230(1), 206-218.
  • [14] Pilkey WD. 2005. Formulas for stress, strain and structural matrices, John Wiley & Sons, Inc., USA.

Static Deflections Analysis of Long Rectangular Sandwich Plates

Year 2018, Volume: 4 Issue: 1, 57 - 66, 30.04.2018

Abstract

In this study, static deflections of laterally loaded long
rectangular sandwich plates were investigated. Symmetrically laminated
quasi-isotropic carbon/epoxy plates were used for the face sheets (skins) and balsa
wood for the core. Boundary conditions were considered as simply supported and
clamped. Maximum deflections were obtained for the parameters such as
thicknesses of core material and face sheets, lamination sequences of face
sheets and boundary conditions in long plate approximation. Results were
compared with those of numerical study based on Finite Element Method and found
in good agreement. Maximum deflections of sandwich plates in same weight were
investigated too and found larger at the thin core and thick face sheets
condition.

References

  • [1] Sezgin FA. 2008. Mechanical behavior and modelling of honeycomb cored laminated fiber/polymer sandwich structures. MSc thesis, İzmir Institute of Technology, İzmir.
  • [2] Borrega M. and Gibson L.J. 2015. Mechanics of balsa (Ochroma pyramidale) wood. Mechanics of Material. 84, 75-90.
  • [3] ASM Handbook Volume 21 Composites, 2001, ASM International Handbook Committee.
  • [4] Noor A.K., Burton W.S. and Bert C.W. 1996. Computational models for sandwich panels and shells. Appl Mech Rev vol 49, no 3, March 1996.
  • [5] Kreja I. 2011. A literature review on computational models for laminated composite and sandwich panels, Cent. Eur. J. Eng. 1(1) 59-80.
  • [6] Kant T and Swaminathan K. 2002. Analytical solutions for the static analysis of laminated composite and sandwich plates based on a higher order refined theory, - Composite Structures, Volume 56, Issue 4, June 2002, Pages 329-344.
  • [7] Kumar A.A. 2018. Ultimate Strength Analysis of Laminated Composite Sandwich Plates, Structures, Volume 14, June 2018, Pages 95-110.
  • [8] Lin G., Zhang P., Liu J. and Li J. 2018. Analysis of laminated composite and sandwich plates based on the scaled boundary finite element method, Composite Structures, Volume 187, 1 March, Pages 579-592.
  • [9] Kollar LP and Springer GS. 2007. Mechanics of composite structures. Cambridge University Press, USA.
  • [10] Matlab.
  • [11] Abaqus /CAE 6.9-2 Student Edition.
  • [12] Tsai SW. 1988. Composites design, 4th Edition, Think Composites, Dayton, OH.
  • [13] Newaz G., Mayeed M. and Rasul A. 2016. Characterization of balsa wood mechanical properties required for continuum damage mechanics analysis. J. of Materials: Design and Applications, 230(1), 206-218.
  • [14] Pilkey WD. 2005. Formulas for stress, strain and structural matrices, John Wiley & Sons, Inc., USA.
There are 14 citations in total.

Details

Primary Language Turkish
Journal Section Articles
Authors

Erkin Altunsaray

Publication Date April 30, 2018
Submission Date January 19, 2018
Acceptance Date March 20, 2018
Published in Issue Year 2018 Volume: 4 Issue: 1

Cite

IEEE E. Altunsaray, “Sandviç Uzun Dikdörtgen Plakların Statik Çökmelerinin Analizi”, GJES, vol. 4, no. 1, pp. 57–66, 2018.

Gazi Journal of Engineering Sciences (GJES) publishes open access articles under a Creative Commons Attribution 4.0 International License (CC BY). 1366_2000-copia-2.jpg