Browse > Article
http://dx.doi.org/10.3795/KSME-A.2003.27.3.424

Vibration Characteristics of a Dummy Fuel Rod Supported by Spacer Grids  

Choi, Myoung-Hwan (한국원자력연구소)
Kang, Heung-Seok (한국원자력연구소)
Yoon, Kyung-Ho (한국원자력연구소)
Kim, Hyung-Kyu (한국원자력연구소)
Song, Kee-Nam (한국원자력연구소)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.27, no.3, 2003 , pp. 424-431 More about this Journal
Abstract
The spacer grid is one of the main structural components in the fuel assembly, which supports the fuel rods and maintains coolable geometry from an external load. A vibration test and a finite element analysis using ABAQUS on a dummy fuel rod continuously supported by Optimized H type(OHT) and New Doublet (ND) spacer grids arc performed to obtain the vibration characteristics such as natural frequencies and mode shapes an(1 to verify a finite element model. The results from the test and the finite element analysis are compared by modal assurance criteria (MAC) values. It is resulted that MACs for the first, the third and the fifth mode shapes are relatively good as compared with those of the second an(1 fourth ones. The natural frequency differences between two methods as well as the mode comparison results for the rod with OHT spacer grid are better than those with ND spacer grid. It is judged that the FE model for the ND spacer grid spring should be modified to consider the long contact length which actually happen when the spring supports the rod.
Keywords
Spacer Grid; Fuel Rod; Natural Frequency; Mode Shape; Modal Assurance Criteria;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Kim, H.K., Kang, H.S., Yoon, K.H., and Song, K.N., 2001, 'Experimental Investigation on the Parameters Affecting Fuel Fretting Wear,' 16th International Conference on Structure Mechanical In Reactor Technology (SMiRT-16), Paper #1548
2 Song, K.N., Yoon, K.H., Kang, B.S., Park, K.J., and Park, G.J., 2002, 'Impact Analysis of Dipper-Type and Multispring-Type Rod Support Grid Assembly in PWR,' Proc. of 10th International Conference on Nuclear Engineering, ICONE10-22177
3 Stoller Report, 1995, 'A Study of Grid-to Rod Fretting Wear in PWR Fuel Assemblies,' SMSC, Vol. 1
4 Kang, H.S., Song, K.N., Kim, H.K, Yoon, KH. and Lee. K.H., 2001, 'Evaluation of Spacer Grid Support Performance by Vibration Test,' KAERI, KAERI/TR -1738/2001
5 Yoon, K.H, Kang, H.S., Kim, H.K., Song, K.N. and Jung, Y.H., 2001, 'Nonlinear Dynamic Buckling Behavior of Partial Spacer Grid Assembly,' Journal of Korean Nuclear Society, Vol. 33, No. 1, pp. 93-101   과학기술학회마을
6 Song, K.N., Yoon, K.H., Kang, H.S. and Kim, H.K., 2002, 'Evaluation of Mechanical/Structural Characteristics on the Advanced PWR Spacer Grids,' Proc. of the KSME 2002 Spring Annual Meeting, pp. 19-24, KSME 02S004
7 Kang, H.S, Yoon, K.H., Kim, H.K, Song, K.N and Jung, Y.H, 2002, 'Vibration Characteristics of a Fuel Rod Supported by Spacer Grids -Vibration Test for a Dummy Rod with Developing Spacer Grid-,' 4th ASINCO 9th KINS Workshop on the Integrity of Nuclear Safety, B07/3
8 Paidoussis, M.P., 1981, 'Fluidelastic Vibration of Cylinder Arrays in Axial and Cross Flow,' Journal of Sound and Vibration, Vol. 76, pp. 329-360   DOI   ScienceOn
9 Kang, H.S., Song, K.N., Kim, H.K. and Yoon, K.H., 2001, 'FIV Analysis for a Rod Supported by Springs at Both Ends,' Journal of Korean Nuclear Society, Vol. 33, No.6, pp. 619-623   과학기술학회마을
10 Chen, S.S. and Wambsganss, W., 1972, 'Parallel Flow-Induced Vibration of Fuel Rod,' Nuclear Engineering and Design, Vol. 18, pp. 253-278   DOI   ScienceOn
11 Kang, H.S., Song, K.N., Yoon, K.H., Jung, Y.H. and Yim, J.S., 1998, 'A Study on the Vibrational Behavior of the Fuel Rods Continuously Supported by a Rotary and Bent Spring System,' Proc. of the KSNVE 1998 Spring Annual Conference, pp. 454-460
12 Kang, H.S., Song, K.N, Kim, H.K., Yoon, K.H. and Jung, Y.H., 2001, 'Verification Test and Model Updating for a Nuclear Fuel Rod with Its Supporting Structure,' Journal of Korean Nuclear Society, Vol. 33, No.1, pp. 73-82   과학기술학회마을
13 Kang, H.S .. Song, K.N., Kim, H.K. and Yoon, K.H., 2001. 'Modal Analysis of a PWR Fuel Rod Supported by the Newly Designed Spacer Grids,' 16th International Conference on Structure Mechanical In Reactor Technology (SMiRT-16). Paper #1425
14 Hibbit, H.D., Karlsson, G.I. and Sorensen, E.P., 1999, ABAQUS/Standard User's Manual, Version 5.8, HKS Inc., RI, USA
15 SDRC, 2000, I-DEAS Matser $Series^{TM}$, Structural Dynamics Research Corporation, OB, USA
16 Lee, S.S, et al., 2000, 'Dynamic Model Verification and Behavior Analysis of Newly Developed Nuclear Fuel Rod Supporting Structure,' KARl, KAERI/CM-328/99
17 Premount, A., 1982, 'On the Vibrational Behavior of Pressurized Water Reactor Fuel Rods,' Nuclear Technology, Vol. 58, pp. 483-491   DOI
18 Ewins, D.J., 1984, Modal Testing: Theory and Practice, John Wiley & Sons Inc., New York
19 Choi, M.H., Kang, H.S., Song, K.N. and Jung, Y.H, 2002, 'Vibration Analysis of a Dummy Fuel Rod Supported by Spacer Grids,' Proc. of the KSME 2002 Spring Annual Meeting, pp. 7-12, KSME 02S002