Simulation Study on Fatigue Growth of Semi-Circular Axial Crack on Inner Surface of Core Barrel under Transient Loads

Shi Kaikai; Zheng Bin; Zheng Liangang

doi:10.13832/j.jnpe.2021.S2.0001

Volume 42 Issue S2

Dec. 2021

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2021 > 42(S2): 1-4

Shi Kaikai, Zheng Bin, Zheng Liangang. Simulation Study on Fatigue Growth of Semi-Circular Axial Crack on Inner Surface of Core Barrel under Transient Loads[J]. Nuclear Power Engineering, 2021, 42(S2): 1-4. doi: 10.13832/j.jnpe.2021.S2.0001

Citation:

Shi Kaikai, Zheng Bin, Zheng Liangang. Simulation Study on Fatigue Growth of Semi-Circular Axial Crack on Inner Surface of Core Barrel under Transient Loads[J]. Nuclear Power Engineering, 2021, 42(S2): 1-4. doi: 10.13832/j.jnpe.2021.S2.0001

Citation:

PDF( 9263 KB)

Simulation Study on Fatigue Growth of Semi-Circular Axial Crack on Inner Surface of Core Barrel under Transient Loads

doi: 10.13832/j.jnpe.2021.S2.0001

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-07-19
Accepted Date: 2021-12-06
Rev Recd Date: 2021-08-05
Publish Date: 2021-12-29

Abstract

Abstract

In order to study the fatigue growth of inner surface cracks in the core barrel under transient loads, the change law of crack morphology of semi-circular axial crack (crack depth d is 10 mm and crack surface length L is 20 mm) on the inner surface of reactor pressure vessel core barrel under transient load is simulated by using the crack block analysis method in the Zencrack software, wherein, the fatigue crack growth rate model of core cylinder material is realized by subprogram. Through the simulation study, it is known that the subprogram realization of material fatigue crack growth rate model is an efficient way to analyze the simulation of crack fatigue growth; the stress intensity factor calculated by the crack block analysis method is similar to that calculated by the standard engineering analysis method;. For the axial cracks with a semi-circular initial state on the inner surface of the core barrel, the initial crack ovalization will occur during the fatigue growth of the crack under transient loads.
- Crack fatigue growth,
- Core barrel,
- Semi-circular axial crack,
- Transient loads

FullText(HTML)

References(7)

References

[1]	NANSTAD R K, CORWIN W R, ALEXANDER D J, et al. Heavy-Section steel irradiation program on irradiation effects in light-water reactor pressure vessel materials: CONF-950740-66[R]. Tennessee: ORNL, 1995.
[2]	NGUYEN H Q, GALLIMARD L, BATHIAS C. Numerical simulation of fish-eye fatigue crack growth in very high cycle fatigue[J]. Engineering Fracture Mechanics, 2015, 135: 81-93. doi: 10.1016/j.engfracmech.2015.01.010
[3]	PARIS P C, ERDOGAN F. A critical analysis of crack propagation laws[J]. Journal of Fluids Engineering, 1963, 85(4): 528-533.
[4]	FORMAN R G, KEARNEY V E, ENGLE R M. Numerical analysis of crack propagation in cyclic-loaded structures[J]. Journal of Fluids Engineering, 1967, 89(3): 459-463.
[5]	WALKER K. The effect of stress ratio during crack propagation and fatigue for 2024-T3 and 7075-T6 Aluminum[J]. Effects of Environment and Complex Load History on Fatigue Life, ASTM Special Technical Publication, 1970, 462: 1-14.
[6]	ZENCRACK. User’s Manual for 8.2[M]. London: Zentech International Ltd, 2017: 10-173.
[7]	AFCEN. In-service inspection rules for mechanical components of PWR nuclear islands: RSE-M[S]. Paris: AFCEN, 2010: 979-988.