Prediction of Mechanical Properties for Spatially Reinforced Composites

공간적으로 보강된 복합재의 기계적 물성치 예측

  • 유재석 (한국과학기술원 기계공학과 항공우주공학전공 대학원) ;
  • 김천곤 (한국과학기술원 기계공학과 항공우주공학전공) ;
  • 홍창선 (한국과학기술원 기계공학과 항공우주공학전공) ;
  • 김광수 (한국항공우주 주식회사)
  • Published : 2000.11.01


This paper predicted the equivalent stiffness of spatially reinforced composites (SRC) using the volume average of a fiber rod and matrix stiffness, and the strength of SRC using the stiffness reduction and the modified Tsai-Wu composite failure theory. Those equivalent engineering constants are used to analyze the mechanical behavior and the failure of SRC structures. Because the distribution of equivalent engineering constants is varying with the change in SRC shape, we made a program that predicts engineering constants of SRC. Both 3-D and 4-D SRC show the smallest tensile modulus and the largest shear modulus at the maximum rotated direction from each rod. Also the strength properties show the same tendency.