采用7050铝合金、QAl10-4-4铜合金及Aermet100结构钢制作了某飞机结构模拟件，测试了三种材料的极化曲线，并以7050/QAl10-4-4/Aermet100极化曲线的插值函数作为边界条件构建了基于二次电流分布的Comsol有限元仿真模型，计算得到了三种金属两两耦接的电偶电流及耦合电位值，并与试验结果进行对照来调试模型，将调试好的模型应用于某型飞机结构件模拟件。结果表明：该模型能够较好地反映腐蚀发生的位置及腐蚀发生的先后顺序，可以为复杂结构件乃至整机的腐蚀仿真预测奠定基础。

An aircraft structural simulation was made using 7050 aluminum alloy, QAl104-4 copper alloy and Aermet100 structure steel. The polarization curves of the three materials were tested, and the Comsol finite element simulation model based on secondary current distribution was constructed with the interpolation function of the 7050/QAl10-4-4/Aermet100 polarization curve as boundary condition. The galvanic current and the coupling potential of three metal pairs were calculated and compared with the test results to debug the model, and the debugged model was applied to the analog parts of a certain type of aircraft structural parts. The results show that the model could reflect the location of corrosion and the sequence of corrosion occurrence better, which could lay a foundation for corrosion simulation prediction of complex structural parts and even the whole airplane.