피로누적손상을 이용한 직조 CFRP의 피로수명 예측
Fatigue Life Prediction of CFRP using Fatigue Progressive Damage Model
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초록
The strength and fatigue life of Satin and Twill-woven CF/epoxy composite(CFRP) have been investigated. Damage mechanism fatigue method has been used to assess fatigue damage accumulation. It is based on measured residual stiffness and residual strength of carbon-fiber reinforced plastic(CFRP) laminates under cyclic loading. Fatigue damage evolution in composite laminates and predict fatigue life of the laminates were simulated by finite element analysis(FEA) method. The stress analysis was carried out in MSC patran/Nastran. A modified Hashin's failure criterion di rmfjapplied to predict the failure of the experimental data of fatigue life but a Ye-delamination criterion was ignored because of 2D modeling. Almost linear stiffness and strength degradation were observed during most of the fatigue process. These stress distribution data were adopted in the simulation to simulate fatigue behavior and estimate life of the laminates. From the results, the predicted fatigue life is more conservatively estimated than the experimental results.
Abstract
The strength and fatigue life of Satin and Twill-woven CF/epoxy composite(CFRP) have been investigated. Damage mechanism fatigue method has been used to assess fatigue damage accumulation. It is based on measured residual stiffness and residual strength of carbon-fiber reinforced plastic(CFRP) laminates under cyclic loading. Fatigue damage evolution in composite laminates and predict fatigue life of the laminates were simulated by finite element analysis(FEA) method. The stress analysis was carried out in MSC patran/Nastran. A modified Hashin's failure criterion di rmfjapplied to predict the failure of the experimental data of fatigue life but a Ye-delamination criterion was ignored because of 2D modeling. Almost linear stiffness and strength degradation were observed during most of the fatigue process. These stress distribution data were adopted in the simulation to simulate fatigue behavior and estimate life of the laminates. From the results, the predicted fatigue life is more conservatively estimated than the experimental results.
참고문헌 (9)
- Hashin, Z., "Fatigue Failure Criteria for Unidirectional Fiber Composites", Journal of Applied Mechanics, 48, pp.846~852 (1981)
- Lian, W., "Fatigue Life Prediction of Composite Laminates by FEA Simulation Method", International Jouranl of Fatigue, 32, pp.123~133 (2010)
- 박홍선, "피로 손상 모델을 이용한 직조 탄소섬유강화 복합재료의 피로 손상 평가", 대한기계학회논문집 A, 34(6), pp.757~762 (2010), 대한기계학회
- 박순철, "평직 CFRP 복합재료의 인장강도 및 파괴저항성 특성 평가", 한국마린엔지니어링학회지, 37(8), pp.862~868 (2013), 한국마린엔지니어링학회[DOI]
- Papanikosp, K., "Modelling of Fatigue Damage Progression and Life of CFRP Laminates", Fatigue & Fracture of Engineering Materials & Structures, 26, pp.37~47 (2003)
- Sendeckyj, G. P., "Fatigue of composite materials, Vol. 4" (1991), Elsevier
- Shokrieh, M.M., "Progressive Fatigue Damage Modeling of Composite Materials", Part I : Modeling. Journal of Composite Materials, 34(13), pp.1056~1080 (2000)
- Shokrieh, M.M., "Progressive Fatigue Damage Modeling of Composite Materials, Part II : Material Characterization and Model Verification", Journal of Composite Materials, 34(13), pp.1081~1116 (2000)
- Varvani-Farahani, A., "Fatigue Damage Analysis based on Stiffness Drop in Unidirectional GRP Composites", Journal of Composite Materials, 40(18), pp.1659~1669 (2006)