97 0

Optimization of a Nuclear Fuel Spacer Grid Spring Using Homology Constraints

Title
Optimization of a Nuclear Fuel Spacer Grid Spring Using Homology Constraints
Author
박경진
Keywords
DESIGN
Issue Date
2008-10
Publisher
ELSEVIER SCIENCE SA
Citation
NUCLEAR ENGINEERING AND DESIGN, v. 238, No. 10, Page. 2624-2634
Abstract
The springs in a spacer grid support the fuel rods in a nuclear fuel system. The spacer grid is part of the fuel assembly. Since the spring has repeated contact with the fuel rod, fretting wear occurs on the surface of the fuel rod. Design is usually performed to reduce the wear while the functions of the spring are maintained. The design process for the spring is defined by using the Independence Axiom of axiomatic design and the design is carried out based on the direction that the design matrix indicates. For a detailed design, an optimization problem is formulated. In optimization, a homologous design is employed to reduce the fretting wear. The deformation of a structure is called homologous if a given geometrical relationship holds for a certain number of structural points before, during, and after the deformation. In this case, the deformed shape of the spring should be the same as that of the fuel rod. This condition is transformed to a function and considered as a constraint in the optimization process. The fretting wear is expected to be reduced due to the homology constraint. The objective function is minimizing the maximum stress to allow local plastic deformation. Optimization results show that contact occurs in a wide range. The results are verified by non-linear finite element analysis. (C) 2008 Elsevier BY. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0029549308002094https://repository.hanyang.ac.kr/handle/20.500.11754/80717
ISSN
0029-5493
DOI
10.1016/j.nucengdes.2008.04.003
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE