海水中阴极保护35钢有限元模拟研究
A Simulation Study of Cathodic Protection of 35-Steel in Seawater by Finite Element Method
摘 要
设计了海水中铝基牺牲阳极阴极保护35钢的电极电位分别处于保护范围内、过保护、欠保护状态下的物理模型,推导Laplace方程的弱形式,方便了有限元程序设计.利用Kriging网格化插值法比较了有限元计算和实验数据.结果表明,有限元法模拟计算三种保护状态下的电位分布接近测量值.
阴极保护
35钢
牺牲阳极
过保护
欠保护
finite element method (FEM)
cathodic protection (CP)
35-Steel
sacrificial anode
over-protection (OP)
under-protection (UP)
Abstract
Physical models of cathodic protection for 35-steel by aluminum sacrificial anode in seawater were built under different conditions of normal cathodic protection,over-protection and under-protection,respectively.And the weak form of Laplace equation was deduced to make finite element method (FEM) numerical calculation conveniently.The comparison of FEM data and measured experimental data was made by Kriging gridding interpolation.The results show that the potential distributions under three protection conditions simulated by FEM approximated to measured experimental results.
中图分类号 TG174.41
所属栏目 试验研究
基金项目 国家自然科学基金项目(No.40776044);中国科学院知识创新工程重要方向项目(KZCX2-YW-210)
收稿日期 2008/7/12
修改稿日期 2008/7/16
网络出版日期
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备注孙虎元,研究员.
引用该论文: WANG Wei,SUN Hu-yuan,SUN Li-juan,WANG Shun,LI Hong-ling. A Simulation Study of Cathodic Protection of 35-Steel in Seawater by Finite Element Method[J]. Corrosion & Protection, 2009, 30(7): 462～465
被引情况:
【1】常炜,孙荣,于湉,宋世德,黄一, "导管架外加电流阴极保护系统无阳极屏蔽层的可行性研究",腐蚀与防护 36, 982-985(2015)
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参考文献
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【2】Muehlenkamp EB,Koretsky MD,Westall JC.Effect of moisture on the spatial uniformity of cathodic protection of steel in reinforced concrete[J].Corrosion,2005,61(6):519-533.
【3】Montoya R,Rendon O,Genesca J.Mathematical simulation of a cathodic protection system by finite element method[J].Materials and Corrosion,2005,56(6):404-411.
【4】Bortels L,Dorochenko A,Van den Bosshe B,et al.Three-dimensional Boundary Element Method and Finite Element Method simulations applied to stray current interference problems.A unique coupling mechanism that takes the best of both methods[J].Corrosion,2007,63(6):561-576.
【5】孙虎元,王在峰,孙立娟.海洋用A3钢阴极保护电场韵三维有限元建模[J].海洋科学,2005,29(7):50-54.
【6】王在峰,孙虎元,孙立娟.海水中A3钢样阴极保护电化学场的二维有限元计算[J].海洋科学,2006,30(7):38-42.
【7】王爱萍,杜敏,王庆璋,等.复杂阴极保护体系三维有限元建模研究[J].电化学,2007,13(4):360-366.
【8】钱伟长,叶开沅.弹性力学[M].北京:科学出版社,1956.
【2】Muehlenkamp EB,Koretsky MD,Westall JC.Effect of moisture on the spatial uniformity of cathodic protection of steel in reinforced concrete[J].Corrosion,2005,61(6):519-533.
【3】Montoya R,Rendon O,Genesca J.Mathematical simulation of a cathodic protection system by finite element method[J].Materials and Corrosion,2005,56(6):404-411.
【4】Bortels L,Dorochenko A,Van den Bosshe B,et al.Three-dimensional Boundary Element Method and Finite Element Method simulations applied to stray current interference problems.A unique coupling mechanism that takes the best of both methods[J].Corrosion,2007,63(6):561-576.
【5】孙虎元,王在峰,孙立娟.海洋用A3钢阴极保护电场韵三维有限元建模[J].海洋科学,2005,29(7):50-54.
【6】王在峰,孙虎元,孙立娟.海水中A3钢样阴极保护电化学场的二维有限元计算[J].海洋科学,2006,30(7):38-42.
【7】王爱萍,杜敏,王庆璋,等.复杂阴极保护体系三维有限元建模研究[J].电化学,2007,13(4):360-366.
【8】钱伟长,叶开沅.弹性力学[M].北京:科学出版社,1956.
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