Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Low degree of homogeneity issue on the effective moduli of plain weave textile composites

기하학적 매개변수에 의한 평직복합재료의 저 균일도 문제

  • 우경식 (충북대학교 구조시스템공학과) ;
  • 서영욱 (충북대학교 구조시스템공학과)
  • Published : 2000.04.01
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Abstract

In th is paper. the low degree of homogeneity issue in the effective modulus was studied for plain weave textile composites. Unit cell analyses were performed using multi-field macroelements. The effective moduli were calculated for finite and infinite configurations and the statistics assessment of the results was presented. Results indicated that the effective modulus of plain weave textile composites depended strongly on the fiber tow phase shift angles and the number of layers. As the number of layers increased, however, the distribution of the modulus showed concentration and higher degrees of homogeneity was attained.

본 논문에서는 평직복합재료에 있어서 섬유다발의 위상각 변화와 적층수에 따른 등가탄성계수의 저 균일도 문제를 연구하였다. 각 적층수에 따라 단순히 적층된 모델과 무한히 반복되어 적층된 모델에 대해 단위구조 해석을 수행하였다. 수치실험을 통해 탄성계수를 계산하였고, 이를 통계적으로 처리하였다. 계산 결과 평직복합재료의 등가탄성계수는 위상각과 적층수의 변화에 크게 의존하며 임의의 조합에 대하여 그 분포양상은 큰 차이를 보였으나, 전반적으로 적층수가 증가함에 따라 균일도가 높아지는 경향을 보였다.

Keywords

References

  1. Composite Materials in Aircraft Structrues Middleton, D.H.(ed.)
  2. Composites Structures Special Issue : NINETH ICCS Mechanical properties prediction of textile-reinforced composite materials using a multiscale energennic approach Bigaud, D.;Hamelin, P.
  3. Composites Science and Technology v.56 Process-microstructure relationships of 2-step and 4-step braided composites Byun, J.H.;Chou, T.W.
  4. Composites Science and Technology v.56 Theoretical analysis of the non-linear deformation properties of a triaxial weave under biaxial stress fields Kawabata, S.;Inoue, N.;Niwa, M.
  5. Composites Science and Technology v.56 A geometrical model for a two-layer woven compostie reinforcement fabric Newton, A.;Georagallides, C.;Ansell, M.P.
  6. NASA TM 87334 ICAN : A versatile code for predicting composite properties Ginty, C.A.;Chamis, C.C.
  7. NASA Contractor Report 181670 A micromechanics model of the stiffness and strength of laminates with fiber waviness Harris, C.H.;Lee, J.W.
  8. Proceedings of the 31st International SAMPE Symposium and Exhibition Simplified estimation of stiffness and biaxial strengths of woven carbon-epoxy composites Hart-Smith, L.J.
  9. Fiber Science Technology v.15 Anti-symmetric elastic properties of composite plates of satin weave cloth Ishikawa, T.
  10. AIAA Journal v.21 no.12 One-dimensional micromechanical analysis of woven fabric composites Ishikawa, T.;Chou, T.W.
  11. Journal of Materials Science v.17 Stiffness and strength behavior of wovwn fabric composites Ishikawa, T.;Chou, T.W.
  12. Journal of Composite Materials v.20 Fiber inclination model of three dimensional textile structural composites Yang, J.M.;Ma, C.L.;Chou, T.W.
  13. Composite Materials : Fatigue and Fracture Three-dimensional stress analysis of plain weave composites Whitcomb, J.D.;T.K. O'Brien(ed.)
  14. PhD Dissertation Prediction of moduli and strength of woven carbon-carbon composites using object-oriented finite element analysis Chapman C.D.
  15. NASA Contractor Report 189597 Finite element analysis of the stiffness of fabric reinforced composites Foye, R.L.
  16. Journal of Composite Materials v.28 no.7 Macro finite element for analysis of textile composites Whitcomb, J.D.;Woo, K.;Gundapaneni, S.
  17. Composite Structures v.37 no.3;4 Effects of fiber tow misalignment on the engineering properties of plain weave textile composites Woo, K.;Whitcomb, J.D.
  18. Composites Science and Technology v.57 Elastic moduli and stress field pf plain weave composites under tensile loading Ito, M.;Chou, T.W.
  19. Journal of Composite Materials v.29 no.4 Boundary effects in wovwn composites Whitcomb, J.D.;Kondagunta, G.;Woo, K.
  20. 한국복합재료학회지 v.10 no.2 적층수에 따른 평직복합재료의 강성 및 강도의 변화에 관한 수치적 연구 우경식
  21. Communications in Numerical Methods in Engineering v.9 Macro finite element using subdomain integration Woo, K.;Whitcomb, J.D.
  22. Composite Structures v.28 Enhanced direct stiffness method for finite element analysis of textile composites Whitcomb, J.D.;Woo, K.
  23. Textile Research Journal v.17 no.7 Geometrical principles applicable to the design of functional fabrics Pierce, F,T.
  24. Journal of Composite Materials v.26 no.17 Elastic behavior of woven fabric composites:Ⅲ-Laminate Design N.K. Naik;P.S. Shembekar
  25. Composites Science and Technology v.56 Three-dimensional modeling of woven-fabric composties for effective thermomechanical and thermal properties A. Dasgupta;R.K. Agarwal;S.M. Bhabdarkar
  26. Composites Science and Technology v.57 Unit-cell geometry in plain-weave fabrics during shear deformations T.M. McBride;Julie Chen
  27. Mechanics of composite materials Jones, R.M.
  28. Composites Science and Technology v.56 Prediction of composite properties from a representative volume element C.T. Sun;R.S. Vaidya
  29. Probability nad statistics for engineers(4th ed.) Scheaffer, R.L.;McClave, J.T.