Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Cyclic Stress-strain Hardening Model of AC4C-T6 Alloy at Cryogenic Temperature

극저온 상태에서 AC4C-T6 의 가공 경화 모델 결정에 관한 연구

  • Lee, Jae-Beom (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University) ;
  • Kim, Kyung-Su (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Lee, Jang-Hyun (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Yoo, Mi-Ji (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University) ;
  • Choung, Joon-Mo (Dept. of Naval Architecture and Ocean Engineering, Inha University)
  • 이재범 (인하대학교 대학원 조선해양공학과) ;
  • 김경수 (인하대학교 선박해양공학과) ;
  • 이장현 (인하대학교 선박해양공학과) ;
  • 유미지 (인하대학교 대학원 조선해양공학과) ;
  • 정준모 (인하대학교 선박해양공학과)
  • Published : 2009.10.20
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Abstract

Present study is concerned with the simulation of plasticity models for the cyclic stressstrain behavior of aluminum alloy AC4C-T6 that can be used for primary materials of LNG cargo pump. Material model of cyclic hardening and plasticity for aluminum alloy AC4C-T6 was investigated through experiments and numerical simulations. Monotonic tensile and cyclic tension-compression test under symmetric load cycles was performed at both room temperature and cryogenic temperature of $-165^{\circ}C$. Based on the experimental data plastic hardening models were evaluated for isotropic/kinematic/combined hardening. FEA (Finite Element Analysis) models which describe the cyclic stress-strain relationship were evaluated for the simulation of plasticity. An appropriate hardening model is proposed comparing the results of FEA with those of experiments.

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