Analysis of Interaction between Interior and Exterior Wall Corrosion Defects
Abstract
:1. Introduction
2. Establishment of FEM Model
2.1. Establishment and Parameters of the Geometric Model
2.2. FEM Model
2.2.1. Model Constraints
2.2.2. Application of Load
2.2.3. Failure Pressure Solution
2.3. Failure Criterion
2.4. Verification of FEM Results
2.5. Critical Distance Calculation Method
2.6. Example of the Critical Distance Calculation
3. Results of the FEM Analysis
3.1. Geometric Model and Stress Nephogram of Different Double Defect Pipe Models
3.2. Impact of Defect Depth on the Critical Distance
3.3. Impact of Defect Length on the Critical Distance
3.4. Critical Distance Fitting Formula of Different Types of Double Defect Pipe Models
3.5. Comparative Analysis of Defect Interaction in Different Types of Double Defect Models
3.5.1. Comparative Analysis of the Critical Distance of Defect Depth
3.5.2. Comparative Analysis of the Critical Distance of Defect Lengths
3.6. Applicability Analysis of the Critical Distance Fitting Formula for Different Pipe Models
3.6.1. Conservative Analysis of the Three Models
3.6.2. Error Analysis of the Three Models
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Material | Yield Strength (MPa) | Tensile Strength (MPa) | Modulus of Elasticity (GPa) | Poisson’s Ratio |
---|---|---|---|---|
X100 | 690 | 760 | 210 | 0.3 |
Number | D (mm) | t (mm) | a (mm) | b (mm) | Burst Pressure (MPa) | FEM (MPa) |
---|---|---|---|---|---|---|
1 | 1320 | 22.9 | 11.5 | 1110 | 15.4 | 14.5 |
2 | 1320 | 22.9 | 11.5 | 1013 | 15 | 14.2 |
3 | 1320 | 22.9 | 11.4 | 609 | 18.1 | 16.5 |
Defect Spacing (mm) | Pd (MPa) | Ps (MPa) | Critical Influence Factor ω (%) |
---|---|---|---|
80 | 24.03 | 26.27 | 9.32 |
120 | 24.59 | 26.27 | 6.85 |
160 | 25.09 | 26.27 | 4.69 |
200 | 25.42 | 26.27 | 3.35 |
240 | 25.71 | 26.27 | 2.15 |
Model Category | Mean Relative Error | Mean Absolute Error |
---|---|---|
exterior wall | −0.0029 | 0.0373 |
interior wall | −0.0059 | 0.0625 |
interior and exterior wall | −0.0080 | 0.0864 |
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Wang, Z.; Long, M.; Li, X.; Zhang, Z. Analysis of Interaction between Interior and Exterior Wall Corrosion Defects. J. Mar. Sci. Eng. 2023, 11, 502. https://doi.org/10.3390/jmse11030502
Wang Z, Long M, Li X, Zhang Z. Analysis of Interaction between Interior and Exterior Wall Corrosion Defects. Journal of Marine Science and Engineering. 2023; 11(3):502. https://doi.org/10.3390/jmse11030502
Chicago/Turabian StyleWang, Zhanhui, Mengzhao Long, Xiaojun Li, and Zhifang Zhang. 2023. "Analysis of Interaction between Interior and Exterior Wall Corrosion Defects" Journal of Marine Science and Engineering 11, no. 3: 502. https://doi.org/10.3390/jmse11030502
APA StyleWang, Z., Long, M., Li, X., & Zhang, Z. (2023). Analysis of Interaction between Interior and Exterior Wall Corrosion Defects. Journal of Marine Science and Engineering, 11(3), 502. https://doi.org/10.3390/jmse11030502