한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제43권1호
  • /
  • Pages.1-7
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  • 2015
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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굴곡 형상 복합재 구조물의 스프링-인 예측

Prediction of Spring-in of Curved Laminated Composite Structure

  • Oh, Jae-Min (Department of Aerospace engineering, Pusan National University) ;
  • Kim, Wie-Dae (Department of Aerospace engineering, Pusan National University)
  • 투고 : 2014.10.13
  • 심사 : 2014.12.30
  • 발행 : 2015.01.01
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초록

본 연구에서는 탄소섬유강화 복합재를 적층각과 적층순서에 따라 C-channel 형상에서 발생하는 스프링-인을 유한요소해석(ABAQUS)을 통해 예측하였다. 복합재 제작공정에서 냉각시의 큰 온도차 및 적층각에 따른 열팽창계수 및 화학적 수축계수의 차이로 인해 변형(스프링-인)이 발생한다. 이러한 변형은 제품의 품질과 직결되는 문제이며, 반드시 고려되어야 할 사항이다. 유한요소해석 시 CHILE모델과 화학적 수축을 고려한 서브루틴을 제작하여 적용하였으며, [0/X/Y/90]s case에 대해 X,Y를 $0{\sim}90^{\circ}$까지 변화시키며 각 case에 대한 스프링-인 발생량을 예측, 분석하였다.

This paper predicts the spring-in effect of curved laminated composite structure for various stacking sequence using finite element analysis(ABAQUS). In composite manufacturing process, large temperature difference, different coefficient of thermal expansion and chemical shrinkage effect cause distortion of composite parts such as spring-in and warpage. Distortion of composite structure is important issue on quality of product, and it should be considered in manufacturing process. In finite element analysis, a CHILE(Cure Hardening Instantaneously Linear Elastic) model and chemical shrinkage effects are considered developing user subroutine in ABAQUS and some cases are simulated.

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참고문헌

  1. Alred C. Loos and George S. Springer, "Curing of Epoxy Matrix Composite" Journal of Composite Material. Vol.17, No.2, 1983, pp.135-169 https://doi.org/10.1177/002199838301700204
  2. Scott R. White and Yeoing K. Kim, "Process-Induced Residual Stress Analysis of AS4/3501-6 Composite Material" Mechanics of Composite Materials and Structures , Vol.5, No.2, 1998, pp:153-186. https://doi.org/10.1080/10759419808945897
  3. Carolyne Albert and Goran Fernlund, "Spring-In and Warpage of Angled Composite Laminates", Composite Science and Technology, Vol.62, Issue14, 2002, pp.1895-1912 https://doi.org/10.1016/S0266-3538(02)00105-7
  4. Woo-Kyun Jung, Sung-Hoon Ahn, and Myung -Shik Won, "Spring-back in GFR/CFR Unsymmetric Hybrid Composite Materials", Journal of the Korean Society for Composite Materials, Vol.18, No.6, 2005, pp.1-8
  5. Yeoing K.Kim and Scott R. White, "Process-Induced Stress Relaxation Analysis of AS4/3501-6 Laminate", Journal of Reinforced Plastic and Composites, Vol.16, No.2, 1997, pp.2-16 https://doi.org/10.1177/073168449701600102
  6. Woo Il Lee, Alfred C. Loos and George S. Springer, "Heat of Reaction, Degree of Cure, and Viscosity of Hercules 3501-6 Resin", Journal of Composite Materials, Vol.16, No.6, 1982, pp.510-520 https://doi.org/10.1177/002199838201600605
  7. Soo-Yong Lee, Curing Induced Residual Stresses in Laminated Cylinderical Shells, KSME International Journal, Vol. 14, No.1, 2000, pp. 19-29 https://doi.org/10.1007/BF03184767
  8. Yeong K. Kim and Scott R. White, "Viscoelastic Analysis Of Processing-Induced Residual Stresses in Thick Composite Laminates", Mechanics of Composite Materials and Structures, Vol. 4, Issue.4, 1997, pp.361-387 https://doi.org/10.1080/10759419708945889
  9. Travis A. Bogetti and John W. Gillespie. Jr, "Two-Dimensional Cure Simulation of Thick Thermosetting Composite", Journal of Composite Materials, Vol.25, No.3, 1991, pp.239-273 https://doi.org/10.1177/002199839102500302
  10. Z. Padovec, M. Ruzicka, V. Stavrovsky, "Springback analysis of Thermoplastic Composite Plates", Applied and Computational Mechanics, Vol.6, 2012, pp.25-34
  11. Graham A. Twigg, "Tool-Part Interaction in Composites Processing", Ph.D Thesis, The University of British Columbia, CANADA, 2001
  12. Carolyne I. Albert, "Spring-in of Angled Thermoset Composite Laminates", Ph.D Thesis, The University of British Columbia, CANADA, 2001
  13. Sung-Rok Jung, Wie-dae Kim, Jae-hak Kim, "Analysis of Thermal Deformation of Carbon-fiber Reinforced Polymer Matrix Composite Considering Viscoelasticity", The Journal of the Korean Society for Composite Materials, 2014, Vol.27, pp.174-181 https://doi.org/10.7234/composres.2014.27.4.174
  14. Hyck Kwon, Seong-Soon Hwang, Won-Jong Choi, Jae-Hwan Lee, Jae-Hak Kim, "Cure Shrinkage Behavior of Polymer Matrix Composite according to Degree of Cure", The Journal of the Korean Society for Composite Materials, 2014, Vol.27, pp.90-95 https://doi.org/10.7234/composres.2014.27.3.090