吕源,易聪,周留成,王凌峰,潘熙祥,王一凡,王岩,陈军吉.基于纳米压痕的IP防腐涂层本构模型反演分析[J].表面技术,2025,54(11):203-210.
LYU Yuan,YI Cong,ZHOU Liucheng,WANG Lingfeng,PAN Xixiang,WANG Yifan,WANG Yan,CHEN Junji.Inverse Analysis of Constitutive Equation of IP Anti-corrosion Coatings Based on Nanoindentation[J].Surface Technology,2025,54(11):203-210 |
| 基于纳米压痕的IP防腐涂层本构模型反演分析 |
| Inverse Analysis of Constitutive Equation of IP Anti-corrosion Coatings Based on Nanoindentation |
| 投稿时间：2024-12-05 修订日期：2025-03-26 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.11.017 |
| 中文关键词: IP防腐涂层 纳米压痕 量纲分析 本构模型 有限元仿真 |
| 英文关键词:IP anti-corrosion coatings nanoindentation dimensional analysis constitutive equation finite element simulation |
| 基金项目:国家科技重大专项(J2019-IV-0014-0082) |
| 作者 | 单位 |
| 吕源 | 西安科技大学 机械工程学院，西安 710054 |
| 易聪 | 西安科技大学 机械工程学院，西安 710054 |
| 周留成 | 空军工程大学 航空动力系统与等离子体技术全国重点实验室，西安 710038 |
| 王凌峰 | 空军工程大学 航空动力系统与等离子体技术全国重点实验室，西安 710038 |
| 潘熙祥 | 西安科技大学 机械工程学院，西安 710054 |
| 王一凡 | 西安科技大学 机械工程学院，西安 710054 |
| 王岩 | 西安科技大学 机械工程学院，西安 710054 |
| 陈军吉 | 西安科技大学 机械工程学院，西安 710054 |
|
| Author | Institution |
| LYU Yuan | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
| YI Cong | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
| ZHOU Liucheng | National Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi'an 710038, China |
| WANG Lingfeng | National Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi'an 710038, China |
| PAN Xixiang | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
| WANG Yifan | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
| WANG Yan | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
| CHEN Junji | School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
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| 中文摘要: |
| 目的 得到IP防腐涂层的本构模型。方法 通过连续刚度法对涂层表面进行纳米压痕试验，得到硬度和弹性模量，输出载荷-位移曲线。利用量纲分析法的 定理，建立各本构参数之间的无量纲函数，确定涂层的本构模型，最后将本构模型代入有限元模型，模拟纳米压痕试验，对比仿真与试验的载荷-位移曲线，验证本构模型的准确性。结果 涂层的硬度为5.49 GPa，弹性模量为69.31 GPa。有限元仿真时，若特征应变偏小，在加载阶段，曲线随硬化指数减小而下移;在卸载阶段，曲线随硬化指数的增大而左移。特征应变偏大时，载荷-位移曲线表现则相反。经对比试验与有限元仿真得到的载荷-位移曲线，二者较为一致。结论 涂层具有较高的表面硬度，表面抗变形能力较好。特征应变偏小时，载荷-位移曲线变化是因为硬化指数变大，加载阶段塑性功增加，总功也增加;特征应变偏大时的相反趋势是因为计算的屈服强度大幅度下降和特征应力点后移导致的塑性功增加。获得的涂层本构模型具有较高的精度且该方法具有可靠性。 |
| 英文摘要: |
| IP coatings provide excellent corrosion resistance for blades working in marine corrosive environments for long periods of time, but they may fall off due to fatigue life when facing complex loads to which the stress-strain response relationship of the coating is highly relevant. However, there are relatively few studies related to the elasticity and plasticity of coatings. The work aims to study the constitutive equation of coatings, so as to make repair in time before they fall off. The coating dimensions are so small and thin that it is not feasible to obtain a constitutive equation by making the test pieces required for conventional tensile experiments. In order to obtain the constitutive equation of the coating, the plastic properties of the coating were investigated by the method of nanoindentation inversion analysis. Nanoindentation experiments were conducted on the coating surface by the continuous stiffness method to obtain the hardness and elastic modulus and output the load-displacement curves. With the theorem of the magnitude analysis method, the dimensionless functions between each constitutive parameter was established to determine the constitutive equation of the coating, and finally, the constitutive equation was substituted into the finite element model to simulate the nanoindentation experiments, and the load-displacement curves of simulation and experiments were compared to verify the accuracy of the constitutive equation. The hardness of the coating was 5.49 GPa, and the modulus of elasticity was 69.31 GPa. In the finite element simulation of this study, 15 coating representative materials were simulated and analyzed for six cases with representative strains of 0.01, 0.033, 0.036, 0.044, 0.06 and 0.09. It was found that the dimensionless functions established by scholars in the past studies on a large number of different materials had large errors with the present studies, not well suited to the coating. The reconstructed dimensionless equation was more simplified than the previous one, and the new function was calculated to be 0.034, compared with 0.033 and 0.044 for Dao and Lee's equations, respectively, which improved the accuracy of the computation of the representative strain. It was also found that the value of the representative strain had a significant impact on the inversion results. If the strain was smaller, the curve shifted downward with the increase of hardening index in the loading stage, and shifted leftward with the increase of hardening index in the unloading stage. When the representative strain was larger, the load-displacement curve behaved the opposite way. When the hardening index was solved, the relevant 3D surface model was established, and it was proposed to merge and simplify the corresponding surface model. When the nanoindentation simulation was completely unloaded, the residual indentation depths were almost the same, which indicated that the model still met the accuracy of the results. Through comparison of the load-displacement curves obtained from experiment and finite element simulation, they were more consistent. The following conclusion is that the IP anti-corrosion coating has high surface hardness and good surface deformation resistance. When the representative strain is smaller, the load-displacement curve changes because the hardening index becomes larger, the plastic work in the loading stage increases, and the total work also increases. The opposite trend when the strain is larger is because the calculated yield strength decreases greatly and the plastic work increases due to the backward shift of the representative stress point. The inversion analysis method for coatings is still equally applicable and the obtained constitutive equation of the coating is highly accurate and the method is reliable. |
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