Predictions of elastic properties of stitched multi-warped knitted composites

다축경편 복합재료 물성의 스티칭 효과

  • 김형우 (연세대학교 기계공학과 대학원) ;
  • 전흥재 (연세대학교 기계공학부) ;
  • 변준형 (한국기계연구원 복합재료그룹)
  • Published : 2005.04.29

Abstract

A micromechanical model for predicting the elastic constants of stitched multi-axial warp knitted (MWK) composite is developed. The averaging method is used to obtain effective properties of stitched MWK fabric composites. In the analysis, a representative volume of the MWK fabric composite is identified. The geometric limitations, effects of stitching yarns and design parameters of MWK fabric composites are considered in the model. Then, the elastic properties of stitched MWK fabric composites are predicted. Finally, the predicted elastic constants are validated by comparison with experimental data. The predicted results are in fair agreement with the experimental results.

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