유리 섬유 강화 폴리우레탄 폼의 온도 및 변형률 속도 의존재료 거동 모델링
Modeling of the Temperature-Dependent and Strain Rate-Dependent Dynamic Behavior of Glass Fiber-Reinforced Polyurethane Foams
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초록
The purpose of this study was to establish a numerical model of polyurethane foam (PUF) to simulate the dynamic response and strength of membrane-type Liquefied natural gas (LNG) Cargo containment system (CCS) under the impact load. To do this, initially, the visco-plastic behavior of PUF was characterized by testing the response of the PUF to the impact loads with various strain rates as well as PUF densities at room temperature and at cryogenic conditions. A PUF material model was established using the test results of the material and the FE analysis. To verify the validation of the established material model, simulations were performed for experimental applications, e.g., the dry drop test, and the results of FEA were compared to the experimental results. Based on this comparison, it was found that the dynamic response of PUF in dry drop tests, such as the reaction force and fracture behaviors, could be simulated successfully by the material model proposed in this study.
Abstract
The purpose of this study was to establish a numerical model of polyurethane foam (PUF) to simulate the dynamic response and strength of membrane-type Liquefied natural gas (LNG) Cargo containment system (CCS) under the impact load. To do this, initially, the visco-plastic behavior of PUF was characterized by testing the response of the PUF to the impact loads with various strain rates as well as PUF densities at room temperature and at cryogenic conditions. A PUF material model was established using the test results of the material and the FE analysis. To verify the validation of the established material model, simulations were performed for experimental applications, e.g., the dry drop test, and the results of FEA were compared to the experimental results. Based on this comparison, it was found that the dynamic response of PUF in dry drop tests, such as the reaction force and fracture behaviors, could be simulated successfully by the material model proposed in this study.
참고문헌 (15)
- Choe, K. H., "Properties of Rigid Polyurethane Foams with Blowing Agents and Catalysts", Polymer Journal, 36, pp.368~373 (2004)
- Croop, B., "Selecting Material Models for the Simulation of Foams in LS_DYNA", Proceedings of 7th European LS_DYNA Conference, pp.1~6 (2009)
- Gama, B. A., "Finite Element Modeling of Impact, Damage Evolution and Penetration of Thick-Section Composites", International Journal of Impact Engineering, 38(4), pp.181~197 (2011)[DOI]
- Gibson, L. J., "Cellular Solids: Structure and Properties" (1997), Cambridge University Press
- 장철웅, "멤브레인 LNG 선박용 강화 폴리우레탄폼의 극저온 거동 연구", 한국해양공학회지, 27(1), pp.74~79 (2013), 한국해양공학회
- 김정현, "LNG운반선 방열시스템에 적용되는 적층형 플라이우드의 극저온 기계적 특성 분석", 한국해양공학회지, 31(3), pp.241~247 (2017), 한국해양공학회[DOI]
- Kim, W. T., "Finite Element Modeling of Low Density Polyurethane Foam Material", Transaction of Korean Society of Automotive Engineers, 4(2), pp.183~188 (1996)
- Plywood Handbook, "Lavijas Finieris", Lavijas Finieris Laboratory, ~ (2017)
- Lee, C. S., "Development of Anisotropic Viscoplastic-damage Model for Glass Fiber Reinforced Polyurethane Foam and its FE Application", Proceedings of 2012 Conference of the Korean Association of Ocean Science and Technology Societeties, pp.746~750 (2012)
- 이제명, "멤브레인 LNG선 방열시스템동적 강도 실험적 특성평가", 대한조선학회 논문집, 44(3), pp.296~304 (2007), 대한조선학회
- 이제명, "멤브레인 LNG선 방열시스템동적 강도 해석적 특성평가", 대한조선학회 논문집, 44(3), pp.305~313 (2007), 대한조선학회
- Lee, S. G., "Drop Impact Response Analysis of Cargo Containment System in MLNG Carrier using FSI Technique of LS-DYNA", Proceedings of the Twentieth International Offshore and Polar Engineering Conference. International Society of Offshore and Polar Engineers, pp.206~210 (2010)
- LSTC, "LS-DYNA User’s Manual", LSTC, ~ (2012)
- 박성보, "폴리머 폼의 선박 및 해양구조물 적용을 위한 극저온 기계적 거동 특성 분석", 대한조선학회 논문집, 51(6), pp.495~502 (2014), 대한조선학회
- Zhang, J., "Constitutive Modeling of Polymeric Foam Material Subjected to Dynamic Crush Loading", International Journal of Impact Engineering, 21(5), pp.369~386 (1998)[DOI]