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http://dx.doi.org/10.20466/KPVP.2017.13.1.061

Sensitivity Study on Creep Behaviors of RPV under Severe Accident conditions  

Kim, Tae Hyun (경희대학교 원자력공학과)
Chang, Yoon-Suk (경희대학교 원자력공학과)
Kim, Min-Chul (한국원자력연구원)
Lee, Bong-Sang (한국원자력연구원)
Publication Information
Transactions of the Korean Society of Pressure Vessels and Piping / v.13, no.1, 2017 , pp. 61-68 More about this Journal
Abstract
Reactor pressure vessel (RPV) under severe accident conditions accompanied by core melting is exposed to direct high-temperature thermal loads. Understanding the creep behavior of the material is one of the most important factors for evaluating the structural integrity at these conditions. While damage evaluation studies have been conducted on critical structures of nuclear power plants through finite element (FE) analyses considering creep behavior, for accurate creep damage evaluation, constitutive equations considered in the FE analyses may have different results depending on the time hardening and strain hardening models as well as the tertiary creep consideration. The purpose of this study is to evaluate the creep damage under severe accident conditions by using FE method for a representative domestic RPV material, SA508 Gr.3. The effect of material hardening models and constitutive equations which are the main variables were also investigated.
Keywords
Constitutive Equation; Creep Behavior; Finite Element Analysis; Reactor Pressure Vessel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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