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Selection of the Optimal Finite Element Type by Material Hardening Behavior Model in Elbow Specimen

엘보우 시편에서의 재료 경화 거동 모델에 따른 최적의 유한 요소 선정

  • 허은주 (한국수력원자력(주) 중앙연구원) ;
  • 권형도 (한국수력원자력(주) 중앙연구원)
  • Received : 2017.05.30
  • Accepted : 2017.06.23
  • Published : 2017.06.30

Abstract

This paper is proposed to select the optimal finite element type in finite element analysis. Based on the NUREG reports, static analyses were performed using a commercial analysis program, $ABAQUS^{TM}$. In this study, we used a nonlinear kinematic hardening model proposed by Chaboche. The analysis result of solid elements by inputting the same material constants was different from the results of the NUREG report. This is resulted from the difference between shell element and solid element. Therefore, the material constants that have similar result to the experimental result were determined and compared according to element type. In case of using solid element for efficient finite element analysis, we confirmed that the use of C3D8I element type(incompatible mode 8-node linear brick element) leads the accurate result while reducing the analysis time.

Acknowledgement

Grant : 설계기준초과 지진에 대한 주기기 건전성 평가 기술개발

Supported by : 한국수력원자력(주)

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