基于有限元的储罐底板双腐蚀缺陷应力分析 张贵霖.pdf

兵器材料科学与工程
Ordnance Material Science and Engineering
ISSN 1004-244X,CN 33-1331/TJ
腐蚀缺陷进行应力分析。结果表明：腐蚀深度增大时，凹坑内应力随之增大；腐蚀半径增大时，凹坑内应力随之减
小。腐蚀深度为凹坑内应力大小的主要影响因素。当两凹坑间距为凹坑半径时，两坑间的罐底板会产生新的应力集中。
当两坑间距离小于 倍凹坑半径时，两个腐蚀凹坑相互干涉，罐底补板时可当作一个腐蚀缺陷处理。当两坑间距离
大于 倍凹坑半径时，凹坑间无干涉，两个腐蚀凹坑可视作两个独立的凹坑处理。分析结果可为罐底修补提供一定
参考。
关键词 双腐蚀缺陷；储罐罐底；应力分析；有限元
中图分类号 TE988 文献标志码 A

Finite element-based stress analysis of double corrosion defects in the bottom
plate of storage tanks
ZHANG Guilin1，XIE Fei1，LI Zhuoyuan2，WU Yuguo1
（ of Oil and Natural Gas Engineering，Liaoning Petrochmical University，Fushun Liaoning 113001，China；
Network Group (Xuzhou) Pipeline Inspection and Testing Co.，Ltd.，Xuzhou Jiangsu 221000，China）
Abstract In order to study the stress changes at the corrosion defects in the bottom plate of the storage tank， finite element software
was used to analyze the stresses of the double corrosion defects in the bottom of the storage tank with different radii, different depths
and different spacing respectively. The results show that the crater stress