基于点电荷模型的腐蚀相关静电场快速预测方法研究

摘要

针对舰船腐蚀相关静态电场实时预测难的问题,提出了基于点电荷(电极)模型的快速建模方法.对舰船的结构进行合理分区,通过计算混合电位值确定电极的极化状态;在电极极化曲线及电化学系统电流和为0的准则基础上,建立了点电极电位和电流之间的函数关系;利用最小二乘算法计算点电极的电流值,并根据点电荷3层模型下的电位计算方法预测舰船腐蚀相关静态电场;分别利用仿真数据和船模试验数据对所提方法的有效性进行了检验.结果表明,所提方法能够实现对舰船腐蚀相关静态电场进行快速预测.%A method of rapidly establishing the prediction model based on the point charge source is proposed for the prediction of ship corrosion related static electric field.The reasonable division of ship structure is set,and the mixed potential of ship is calculated based on mixed electrode potential.The functional relationship between potential and current of point electrode is established based on the material polarization curve and the electrochemical system' s current sum which is zero.The current of point electrode is calculated using least squares method,and the ship corrosion related static electric field is predicted using the potential calculation method of point charge under three-layered medium.The effectiveness of the proposed method is verified by using the surface ship simulation data and the ship model test results.The results show that the proposed method can be used for fast prediction of ship corrosion related static electric field.