Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2019 / Cilt: 25 - Sayı: 4

Young’s modulus estimation techniques for the randomly oriented natural fiber reinforced composites: Finite element analysis and analytical models

Gelişigüzel doğal lif takviyeli kompozitlerin elastiklik modülü tahmin yöntemleri: Sonlu elemanlar analizi ve analitik modeller

Pages
454–461
Publication Date
2019-08-28
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Moreover, the behavior of composites can be simulated by finite element methods and closed results (17-23%) are revealed in this respect.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In the study, elastic modulus estimation methods of natural fiber reinforced composites considered as alternatives to synthetic fiber reinforced composites have been investigated.
📊
Key Findings & Data:Particularly in low fiber reinforced composite samples, the data obtained from the analytical models approximated between 2-4% of the experimental data.
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Conclusion & Impact:Moreover, the behavior of composites can be simulated by finite element methods and closed results (17-23%) are revealed in this respect.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Doğal lifler · Kompozitler · Modelleme

Abstract

In the study, elastic modulus estimation methods of natural fiber reinforced composites considered as alternatives to synthetic fiber reinforced composites have been investigated. Finite element analysis (FEA) and some mathematical models which are used for synthetic fiber reinforced composites were preferred. During the study, randomly oriented cotton fiber reinforced composites at different fiber ratio by volume were investigated and the tensile test results were found experimentally. Experimental data were compared with data obtained using finite element method and current analytical models. Particularly in low fiber reinforced composite samples, the data obtained from the analytical models approximated between 2-4% of the experimental data. On the other hand, in the analysis by the finite element method, it is observed that the difference with the experimental results is opened as the high deformations are occurred. The most suitable analytical models have been found in the study and have been proposed for such composites. Moreover, the behavior of composites can be simulated by finite element methods and closed results (17-23%) are revealed in this respect.

Özet

Çalışmada sentetik lif takviyeli kompozitlere alternatif olarak düşünülen doğal lif takviyeli kompozitlerin elastisite modülü tahmin yöntemleri incelenmiştir. Yöntem olarak sonlu elemanlar analizi ve sentetik lif takviyeli kompozitler için kullanılan matematiksel modellerin uygunlukları araştırılmıştır. Çalışma boyunca ele alınan kompozitlerhacimce farklı oranlarda gelişigüzel pamuk lifi takviyeli olup çekme test sonuçları deneysel olarak bulunmuştur. Deneysel veriler sonlu elemanlar yöntemi ve mevcut analitik modeller kullanılarak elde edilen veriler ile kıyaslanmıştır. Özellikle düşük lif takviyeli kompozit numunelerde analitik modellerden elde edilen veriler deneysel verilere yaklaşık olarak %2-4 arasında yaklaşmıştır. Diğer yandan sonlu elemanlar yöntemiyle yapılan analizlerde ise yüksek şekil değiştirme oranlarına doğru gidildikçe deneysel sonuçlarla aradaki farkın açıldığı gözlenmiştir. Çalışma neticesinde en uygunan alitik modeller bulunmuş ve bu tarz kompozitler için önerilmiştir. Ayrıca sonlu elemanlar yöntemiyle kompozitlerin davranışları taklit edilebilmiş ve deneysel değerler ile yakın (%17-23) sonuçlar ortaya çıkarılmıştır.

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Cite This Article

BODUR, M. S., BAKKAL, M. (2019). Young’s modulus estimation techniques for the randomly oriented natural fiber reinforced composites: Finite element analysis and analytical models. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 25 - Sayı: 4, 454–461. https://ajindex.com/articles/42195

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References (14)

  1. Whitcomb JD. “Three-dimensional stress analysis of plain weave composites”. Composite Materials: Fatigue and Stresses, 3, 16-39,1990.
  2. Guedes JM, Kikuchi N. “Preprocessing and post processing for materials based on the homogenization method with adaptive finite element methods”. Computer Method in Applied Mechanics and Engineering, 83(2), 143-198, 1990.
  3. Chapman C, Whitcomb J. “Effect of assumed tow architecture on predicted moduli and stresses in plain weave composites”. Journal of Composite Materials, 29(16), 2134-2159, 1995.
  4. Ng SP, Tse PC, Lau KJ. “Numerical and experimental determination of in plane elastic properties of 2/2 twill weave fabric composites”. Composites Part B, 29B, 735-744, 1998.
  5. Dasgupta A, Agarwal RK, Bhandarkar SM. “Three-dimensional modelling of woven-fabric composites for effective thermo mechanical and thermal properties”. Composites Science and Technology, 56, 209-223,1996.
  6. Karkkainen RL, Sankar BV. “A direct micromechanics method for analysis of failure initiation of plain weave textile composites”. Composite Science and Technology, 66, 137-150, 2006.
  7. Kim HJ, Swan CC. “Voxel-based meshing and unit-cell analysis of textile composites”. International Journal for Numerical Methods in Engineering, 56, 977-1006, 2003.
  8. Lomov SV, Belov EB, Bischoff T. “Carbon composites based on multiaxial multiply stitched preforms. Part I-Geometry of the preform”. Composites Part A, 33, 1171-1183, 2002.
  9. Takano N, Uetsuji Y,Kashiwagi Y, Zako M. “Hierarchical modelling of textile composite materials and structures by the homogenization method”. Modelling and Simulation in Materials Science and Engineering, 7, 207-231,1999.
  10. Lomov SV, Ivanov DS, Verpoest I, Zako M. “Meso-FEModelling of Textile Composites: Road map. data flow and algorithms”. Composites Science and Technology, 67, 1870-1891, 2007.
  11. Sih GC, Carpinteri A, Surace G. Advanced Technology For Design and Fabrication of Composite Materials and Structures. 1st ed. Dordrecht, Netherlands, Kluwer Academic Publishers, 1995.
  12. Cox HL. “The elasticity and strength of paper and other fibrous materials”. British Journal of Applied Physics, 3, 72-79, 1952.
  13. Halpin JC. “Stiffness and expansion estimates. for oriented short fiber composites”. Journal of Composite Materials, 3, 720-724, 1969.
  14. Halpin JC, Pagano NJ. “The laminate approximation for randomly oriented fibrous composites”. Journal of Composite Materials, 3, 720-724,1969. Nielson LE. Mechanical Properties of Polymer and Composites. 1 ed. New York, USA, Ma