한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제18권3호
  • /
  • Pages.133-142
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  • 2010
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

변온 하중하에 있는 재료의 이력거동 예측을 위한 다층 모델에 관한 연구

A Study on the Overlay Model for Description of Hysteresis Behavior of a Material under Non-isothermal Loading

  • 김상호 (세종공업(주)) ;
  • 서동훈 (울산대학교 기계자동차공학부) ;
  • 여태인 (울산대학교 기계자동차공학부)
  • Kim, Sang-Ho (Research & Development Center, Sejong Industrial Co.) ;
  • Seo, Dong-Hun (School of Mechanical & Automotive Engineering, University of Ulsan) ;
  • Yeo, Tae-In (School of Mechanical & Automotive Engineering, University of Ulsan)
  • 투고 : 2009.09.02
  • 심사 : 2009.11.04
  • 발행 : 2010.05.01
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초록

The present work focuses on the characterization of material parameters of the Overlay(multilinear hardening) model for analyzing the non-isothermal cyclic deformation. In the previous study, all the parameters were especially based on the Overlay theories, and a simple method was suggested to find out the best material parameters for the isothermal cyclic deformation analysis. Based on the previous research this paper f dther improves the isothermal parameters and suggests how to apply the isothermal parameters to the non-isothermal conditions especially for the description of TMF(Thermo-Mechanical Fatigue) hysteresis behavior. The parameters are determined and calibrated using 400 series stainless steel test data in the reference papers. For the implementation into ABAQUS, a user subroutine is developed by means of ABAQUS/UMAT. The finite element results show good agreement with test for the case of uniaxial non-isothermal cyclic loading, signifying the proposed method can be used in the TMF analysis of the converter-inserted heavy duty muffler system and the stainless steel exhaust-manifold system which are to be done in our future research.

키워드

참고문헌

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