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research-article

Experimental Investigation on Buckling of Ellipsoidal Head of Steel Nuclear Containment

[+] Author and Article Information
Keming Li

Institute of Process Equipment, Zhejiang University, Hangzhou, China
lkmzju@163.com

Jinyang Zheng

Institute of Process Equipment, Zhejiang University, Hangzhou, China; State Key Laboratory of Fluid Power and Mechatronic Systems, Hangzhou, China
jyzh@zju.edu.cn

Zekun Zhang

Institute of Process Equipment, Zhejiang University, Hangzhou, China
37zk@163.com

Chaohua Gu

Institute of Process Equipment, Zhejiang University, Hangzhou, China
guchaohua@zju.edu.cn

Xiaoping Zhang

Institute of Process Equipment, Zhejiang University, Hangzhou, China
zhangwwwly@163.com

Shenghua Liu

Shanghai Nuclear Engineering Research and Design Institute, Shanghai, China
liush@snerdi.com.cn

Honghui Ge

Shanghai Nuclear Engineering Research and Design Institute, Shanghai, China
gehonghui@snerdi.com.cn

Caisheng Gu

Yixing Hokkai Head Plate Co., Ltd, Yixing, China
gucaisheng@hokkai.com.cn

Guanghua Lin

Changzhou Saifu Chemical Engineering Equipment Installation Co., Ltd, Changzhou, China
lingh03@163.com

1Corresponding author.

ASME doi:10.1115/1.4038013 History: Received March 25, 2017; Revised September 16, 2017

Abstract

A containment of a nuclear power plant is a final barrier against the release of radioactive materials and withstands internal pressure due to an accident. Buckling is a critical failure mode of an ellipsoidal head of steel containment vessel under internal pressure. First, a vessel was designed to measure buckling pressure and shape of the ellipsoidal head. Second, an experiment was successfully performed on an ellipsoidal head which has a diameter of 4797 mm, a radius-to-height ratio of 1.728 and a thickness of 5.5 mm. The initial shape and deformations of the ellipsoidal head were measured by using 3D laser scanners. The detailed buckling characteristics including shapes, deformations, strains of buckles and buckling pressures were obtained. Finally, initial buckling pressures were predicted by nonlinear finite element analysis considering the initial measured and the initial perfect shapes of the ellipsoidal head, respectively. The agreement between the initial experimental buckling pressure and that predicted by the analysis considering the initial measured shape is good.

Copyright (c) 2017 by ASME
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