Novel method to increase the buckling pressure of cylindrical shells under external pressure
Novel method to increase the buckling pressure of cylindrical shells under external pressure
复制标题
提高圆柱壳外压屈曲压力的新方法
DOI：
10.1016/j.measurement.2018.12.013
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发表时间：
2019-03
期刊：
影响因子：
5.6
通讯作者：
He Bing wei
中科院分区：
文献类型：
--
作者：
Guo Jin quan;Fan Deng Shuai;Lai Huan Sheng;Liu Kang Lin;Guo Zhao;Xu Chen;He Bing wei
圆柱壳通常会因在真空或外部压力下弯曲而失效。传统方法包括安装加强环或增加壳体厚度以增加屈曲压力。本文提出了一种新颖的方法，使用圆柱壳的夹紧避雷器暂时增加屈曲压力。设计了一个实验装置来研究在外部压力下用于圆柱壳的夹紧避雷器的效率提高。实验装置主要包括压力表、压力缸和单活塞手动泵。试验过程中压力表自动记录临界屈曲压力。实验结果表明，使用夹紧式避雷器后，当圆柱壳变为短圆柱壳时，夹紧式避雷器能够有效提高圆柱壳的临界屈曲压力。随着长外径比的减小、圆柱壳的杨氏模量的增加以及夹紧避雷器的位置更靠近圆柱壳的中心，增强效率增加。此外，还利用方程估算了不同数量夹紧式避雷器短圆柱壳在外压作用下的临界屈曲压力。
Cylindrical shells generally fail by buckling under vacuum or external pressure. Traditional methods include installing stiffening rings or increasing the thickness of the shells to increase the buckling pressure. A novel method is proposed herein to increase the buckling pressure temporarily using clamped arrestors for cylindrical shells. An experimental setup was designed to study the enhancing efficiency of clamped arrestors used in cylindrical shells under external pressures. The experimental setup comprises primarily the pressure gauge, pressure cylinder, and single-piston manual pump. The critical buckling pressure was recorded automatically by the pressure gauge during test. The experimental results indicate that the clamped arrestor could effectively increase the critical buckling pressure of the cylindrical shells when the cylindrical shells became short cylindrical shells after the clamped arrestor was used. The enhancing efficiency increased with decreasing length-to-outer-diameter ratio, increasing Young’s modulus of the cylindrical shells, and the closer position of the clamped arrestors to the center of the cylindrical shells. In addition, an equation was also used to estimate the critical buckling pressure of the short cylindrical shells with different numbers of clamped arrestors under external pressures.
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DOI：
10.1061/(asce)0733-9399(2002)128:1(102
发表时间：
2002
期刊：
Journal of Engineering Mechanics-asce
影响因子：
--
作者：
S. Kyriakides
通讯作者：
S. Kyriakides
影响因子：
4.1
作者：
N. D. Duc;T. Q. Quan
通讯作者：
N. D. Duc;T. Q. Quan
DOI：
10.1115/1.2929045
发表时间：
1992-08
影响因子：
1
作者：
Y. Shimizu;Y. Moriwaki
通讯作者：
Y. Shimizu;Y. Moriwaki
DOI：
10.1061/(asce)0733-9445(1998)124:11(1350
发表时间：
1998-11
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
K. El-Sawy;I. Moore
通讯作者：
K. El-Sawy;I. Moore
影响因子：
2.4
作者：
A. Razakamiadana;M. Zidi
通讯作者：
A. Razakamiadana;M. Zidi