Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Prediction of Spring-in Deformation of Carbon Fiber Reinforced Composite by Thermal Residual Stress

복합재 성형후 열잔류응력에 의한 변형 연구

  • Kim, Yong-Seung (Aircraft Structural Design Lab, Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Wie-Dae (Department of Aerospace Engineering, Pusan National University)
  • Received : 2017.11.03
  • Accepted : 2017.12.13
  • Published : 2017.12.31
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Abstract

This paper predicted deformation due to thermal residual stress in composites using finite element analysis. Temperature cycle, Model shape, Laminate angle, Stacking sequence, chemical shrinkage of resin, and thermal expansion are affect composite deformation. Compare the results of the analytical model with the actual model of the same shape. This paper suggests that the analytical results can be applied to actual Model.

본 연구에서는 탄소섬유강화 복합재의 제작 시 열 잔류응력으로 인한 변형을 유한요소 프로그램 ABAQUS에서 User Subroutine을 이용한 유한요소 해석을 통해 예측한다. 탄소섬유강화 복합재의 변형에 영향을 주는 다양한 요인 중 온도구배, 제품 형상, 적층각 및 적층순서, 수지의 화학수축, 열 잔류응력을 고려한 복합재 성형을 해석하였다. 같은 형상의 실제 모델과 해석 모델의 결과를 비교한다. 또한 해석 결과를 분석하여 실제 제작의 오차에 적용하여 실제 제작에서의 성형 완성도를 높이는데 목적이 있다.

Keywords

References

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