Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

Impact Performance Evaluation of Advanced High-strength Steel Sheets Based on Combined Continuum-Fracture Mechanics

복합 연속체-파괴 역학에 기초한 초고강도강의 충격 특성 평가

  • Ma, N. ;
  • Park, T. ;
  • Kim, D. ;
  • Seok, D. ;
  • Kim, Chong-Min (General Motors R&D Center) ;
  • Chung, K.
  • 마닝 (서울대학교 재료공학부) ;
  • 박태준 (서울대학교 재료공학부) ;
  • 김돈건 (서울대학교 재료공학부) ;
  • 석동윤 (서울대학교 재료공학부) ;
  • ;
  • 정관수 (서울대학교 재료공학부)
  • Published : 2009.10.08
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Abstract

Based on combined continuum-fracture mechanics, fracture criterion was utilized to predict impact performance of advanced high-strength steel sheets: 340R and TWIP940. The macro-crack propagation behavior at high stress triaxiality was characterized by V-notch tests while deformation behavior at high strain rate was characterized by simple tension tests with various cross head speeds. The characterized mechanical properties were incorporated into the FE program ABAQUS/Explicit to simulate the charpy impact tests, which showed good agreement with experiments.

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