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등가하중을 이용한 원자로 핵연료봉 지지격자 스프링의 비선형 응답 구조 최적설계

Title
등가하중을 이용한 원자로 핵연료봉 지지격자 스프링의 비선형 응답 구조 최적설계
Other Titles
Nonlinear Response Structural Optimization of a Nuclear Fuel Rod Spacer Grid Spring Using the Equivalent Load
Author
박경진
Keywords
Spacer Grid(지지격자); Shape Optimization(형상최적설계); Nonlinear Response Optimization(비선형 응답 최적설계); Equivalent Load(EL, 등가하중)
Issue Date
2007-06
Publisher
대한기계학회
Citation
대한기계학회 2007년도 춘계학술대회 강연 및 논문 초록집, Page. 796 - 801
Abstract
The spacer grid set is a part of a nuclear fuel assembly The set has a spring and the spring supports the fuel rods safely Although material nonlinearity is involved in the deformation of the spring, nonlinearity has not been considered in design of the spring. Recently a nonlinear response structural optimization method has been developed using equivalent loads. It is called nonlinear response optimization equivalent loads (NROEL). In NROEL, the extemalloads are transformed to the equivalent loads (EL) for linear static analysis and linear response optimization is carried out based on the EL in a cyclic manner until the convergence criteria are satisfied. EL is the load set which generates the same response field of linear analysis as that of nonlinear analysis. Shape optimization of the spring is carried out based on EL. The objective function is defined by minimizing the maximum stress in the spring while mass is limited and the support force of the spring is larger than a certain value. The results are verified by nonlinear response analysis. ABAQUS is used for nonlinear response analysis and GENESIS is employed for linear response optimization.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00850972https://repository.hanyang.ac.kr/handle/20.500.11754/106647
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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