A new Japanese nuclear regulation involves estimating the possible damage to plant structures due to intentional aircraft impact. The effect of aircraft impact needs to be considered in the existing nuclear power plants. The structural damage and fuel dispersion behavior after aircraft impact into plant structures can be evaluated using finite element analysis (FEA). FEA needs validated experimental data to determine the reliability of the results. In this study, an analysis method was validated using a simple model such as a cylindrical tank. Numerical simulations were conducted to evaluate the impact and dispersion behavior of a water-filled cylindrical tank. The simulated results were compared with the test results of the VTT Technical Research Centre of Finland (VTT). The simulations were carried out using a multipurpose FEA code LS-DYNA®. The cylindrical tank was modeled using a shell element, and the tank water was modeled using smoothed particle hydrodynamics (SPH) elements. First, two analysis models were used to evaluate the effect of the number of SPH elements. One had about 300,000 SPH elements and the other had 37,000 SPH elements. The cylindrical tank ruptured in the longitudinal direction after crashing into a rigid wall, and the filled water dispersed. There were few differences in the simulated results when using different numbers of SPH elements. The VTT impact test was simulated with an arbitrary Lagrangian-Eulerian (ALE) element to consider the air drag. The analytical dispersion pattern and history of dispersion velocity ratio agreed well with the impact test results.

References

References
1.
Bocchieri
,
R. T.
,
MacNeill
,
R. M
.,
Northrup
,
C. N.
, and
Dierdorf
, and
D. S.
, eds.,
2012
,
Crash Simulation of Transport Aircraft for Predicting Fuel Release First Phase—Simulation of the Lockheed Constellation Model L-1649 Full-Scale Crash Test
, Federal Aviation Administration, Atlantic City,
NJ
.
2.
Borschnek
,
F.
,
Herrmann
,
N.
, and
Müller
,
H. S.
,
2013
, “
Numerical Simulation of the Impact of Fluid-Filled Projectiles Using Realistic Material Models
,”
22nd International Conference on Structural Mechanics in Reactor Technology (SMiRT-22)
, San Francisco, CA, Aug. 18–23, p.
10
.
3.
Morikawa
,
H.
,
Mizuno
,
J.
,
Momma
,
T.
,
Fukuda
,
R.
,
Takeuchi
,
M.
, and
Shikama
,
Y.
,
1999
, “
Scale Model Tests of Multiple Barriers Against Aircraft Impact—Part 2: Simulation Analyses of Scale Model Impact Tests
,”
15th International Conference on Structural Mechanics in Reactor Technology (SMiRT-15)
, Seoul, South Korea, Aug. 15–20, p.
8
.
4.
Kostov
,
M.
,
Miloshev
,
M.
,
Nikolov
,
Z.
, and
Klecherov
,
I.
, “
Non-Structural Mass Modeling in Aircraft Impact Analysis
,”
23rd International Conference on Structural Mechanics in Reactor Technology (SMiRT-23)
, Manchester, UK, Aug. 10–14, p.
9
.
5.
Räety
,
H.
, and
Puska
,
E. K.
,
2006
, “
SAFIR the Finnish Research Programme on Nuclear Power Plant Safety 2003-2006
,” VTT Research, Helsinki, Finland, Final Report No.
VTT-TIED-2272
.https://www.vtt.fi/inf/pdf/tiedotteet/2004/T2272.pdf
6.
Puska
,
E. K.
, and
Suolanen
,
V.
,
2011
, “
SAFIR2010 the Finnish Research Programme on Nuclear Power Plant Safety 2007–2010
,” VTT Research, Helsinki, Finland, Final Report No.
VTT RESEARCH NOTES 2571
.https://www.vtt.fi/inf/pdf/tiedotteet/2011/T2571.pdf
7.
Silde
,
A.
,
Kankkunen
,
A.
, and
Juntunen
,
J.
,
2009
, “
Study of Liquid Dispersal From a Missile Impacting a Wall
,”
20th International Conference on Structural Mechanics in Reactor Technology
(
SMiRT-20
), Espoo, Finland, Aug. 9–14, p.
8
.https://repository.lib.ncsu.edu/bitstream/handle/1840.20/23733/5_paper_2050.pdf?sequence=1&isAllowed=y
8.
Hämäläinen
,
J.
, and
Suolanen
,
V.
,
2015
, “
SAFI R2014 the Finnish Research Programme on Nuclear Power Plant Safety 2011–2014
,” VTT Technology, Kuoplo, Finland, Final Report No.
VTT TECHNOLOGY 213
https://www.vtt.fi/inf/pdf/technology/2015/T213.pdf.
9.
Heckötter, C.
, and
Vepsä, A.
, 2015, “
Experimental Investigation and Numerical Analyses of Reinforced Concrete Structures Subjected to External Missile Impact
,”
Prog. Nucl. Energy
,
84
, pp. 56–67..
10.
Saarenheimo
,
A.
,
Tuomala
,
M.
,
Calonius
,
K.
,
Hakola
,
I.
,
Hostikka
,
S.
, and
Silde
,
A.
,
2009
, “
Experimental and Numerical Studies on Projectile Impacts
,”
J. Struct. Mech.
,
42
(
1
), p.
37
.
11.
Simola
,
K.
, and
Suolanen
, and
V.
,
2014
, SAFIR2014, VTT Research, Espoo, Finland, Report No. R-02526-14.
12.
Iwasaki
,
K.
,
Miyaki
,
H.
,
Shoji
,
H.
, and
Minegishi
,
M.
,
2013
, “
Data Base for High Velocity Strain- Rate Properties Data of Aircraft Aluminum Alloys
,” Japan Aerospace Exploration Agency, Tokyo, Japan, Report No. JAXA-RM-12-010.
13.
JIS
,
2014
, “
Aluminium and Aluminium Alloy Sheet, Strips and Plates
,” Japanese Standards Association, Tokyo, Japan, Standard No. JIS H 4000.
14.
JIS
,
2012
, “
Cold-Rolled Stainless Steel Plate, Sheet and Strip
,” Japanese Standards Association, Tokyo, Japan, Standard No. JIS G 4305,
15.
JSME
,
1986
,
JSME Data Book: Heat Transfer
,
4th ed.
,
The Japan Society of Mechanical Engineers
, Tokyo, Japan, pp.
325
329
.
16.
LSTC
,
2015
, “
LS-DYNA® Keyword User's Manual Volume I
,” Livermore Software Technology Corporation, Livermore, CA.
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