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http://dx.doi.org/10.20466/KPVP.2017.13.1.084

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

Heo, Eun Ju (한국수력원자력(주) 중앙연구원)
Kweon, Hyeong Do (한국수력원자력(주) 중앙연구원)
Publication Information
Transactions of the Korean Society of Pressure Vessels and Piping / v.13, no.1, 2017 , pp. 84-91 More about this Journal
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.
Keywords
Isotropic Hardening; Kinematic Hardening; Combined Hardening; Finite Element Analysis; Ratcheting;
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