Experimental investigation of impact-sliding interaction and fretting wear between tubes and anti-vibration bars in steam generators

Guo Kai; Jiang Naibin; Qi Huanhuan; Feng Zhipeng; Wang Yang; Tan Wei

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자료유형: 학술저널

저자정보: Guo Kai Jiang Naibin Qi Huanhuan Feng Zhipeng Wang Yang Tan Wei

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제52권 제6호

발행연도: 2020.1

수록면: 1,304 - 1,317 (14page)

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The tubes in a heat exchanger, such as a steam generator (SG), are subjected to crossﬂow, and interaction between tubes and supports can happen, which can cause fretting wear of tubes. Although many experiments and models have been established, some detailed mechanisms arestill notsufﬁcientlyclear.In this work, more attention is paid to obtain the regulation of impact and sliding in the complex process and many factors, such as excitation forces and clearances. The responses and contact forces were analyzed to obtain clear understanding of the inﬂuences of these factors. Room temperature tests in the air were established. The results show that the effect of clearance on the normal work rate is not monotonous and instead has two peaks. The force ratio can inﬂuence the normal work rate by changing the distribution of contact angles, which can result in higher sliding in the contact process. Fretting wear tests are conducted, and the wear surfaces are analyzed by a scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDX). The results of this work can serve as a reference for impactsliding contact analysis between AVBs and tubes in steam generators

참고문헌 (27)

참고문헌 신청

C. E. Taylor / 1998 / Flow-induced vibration : recent findings and open questions / Nucl. Eng. Des 185:249~276

A.D.F. Axisa / 1984 / Experimental study of impact forces in multi-span PWR steam generator tubes / ASME Symposium on Flow Induced Vibration :1~22

M. P. Païdoussis / 1992 / Cross-flow-induced chaotic vibrations of heatexchanger tubes impacting on loose supports / J. Sound Vib 152:305~326

N. W. Mureithi / 1995 / Intermittency transition to chaos in the response of a loosely supported cylinder in an array in cross-flow / Chaos, Solit. Fractals 5:847~867

R. D. Blevins / 1979 / Fretting wear of heat exchanger tubesdPart I experiments / J. Eng. Power Trans. ASME 101:625~630

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