Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures
This paper develops a novel design formula to estimate the residual strength of corroded stiffened cylindrical structures. It extends a previously established ultimate strength formulation for intact cylinders by introducing a corrosion-induced strength reduction factor. The foundational formula con...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-07-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/13/7/1381 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850077339233288192 |
|---|---|
| author | Sang-Hyun Park Byoungjae Park Sang-Rai Cho Sung-Ju Park Kookhyun Kim |
| author_facet | Sang-Hyun Park Byoungjae Park Sang-Rai Cho Sung-Ju Park Kookhyun Kim |
| author_sort | Sang-Hyun Park |
| collection | DOAJ |
| description | This paper develops a novel design formula to estimate the residual strength of corroded stiffened cylindrical structures. It extends a previously established ultimate strength formulation for intact cylinders by introducing a corrosion-induced strength reduction factor. The foundational formula considers failure mode interactions like yielding, local buckling, overall buckling, and stiffener tripping. This research utilizes recent experimental and numerical investigations on corroded ring-stiffened cylinder models. Experimental results validate the numerical analysis method, showing good agreement in collapse pressures (2–4% difference) and shapes. The validated numerical method is then subject to an extensive parametric study, systematically varying corrosion characteristics. Results indicate a clear relationship between corrosion volume and strength reduction, with overall buckling being more sensitive. Based on these comprehensive results, a new empirical strength reduction factor (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>ρ</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></semantics></math></inline-formula>) is derived as a function of the corrosion volume ratio (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>V</mi></mrow><mrow><mi>n</mi><mi>o</mi><mi>n</mi></mrow></msub></mrow></semantics></math></inline-formula>). This factor is integrated into the existing ultimate strength formula, allowing direct residual strength estimation for corroded structures. The proposed formula is rigorously verified against experimental and numerical data, showing excellent agreement (mean 1.00, COV 5.86%). This research provides a practical, accurate design tool for assessing the integrity and service life of corroded stiffened cylindrical structures. |
| format | Article |
| id | doaj-art-99c03b9292fa4b429cf60dd876ea4e08 |
| institution | DOAJ |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-99c03b9292fa4b429cf60dd876ea4e082025-08-20T02:45:49ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-07-01137138110.3390/jmse13071381Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical StructuresSang-Hyun Park0Byoungjae Park1Sang-Rai Cho2Sung-Ju Park3Kookhyun Kim4UlsanLab Inc., Ulsan 44610, Republic of KoreaKorea Research Institute of Ships and Ocean Engineering, Daejeon 35208, Republic of KoreaUlsanLab Inc., Ulsan 44610, Republic of KoreaSchool of Electrical & Control Engineering, Tongmyong University, Busan 48520, Republic of KoreaAdvanced Defense Engineering Course, Graduate School of Changwon National University, Changwon 51140, Republic of KoreaThis paper develops a novel design formula to estimate the residual strength of corroded stiffened cylindrical structures. It extends a previously established ultimate strength formulation for intact cylinders by introducing a corrosion-induced strength reduction factor. The foundational formula considers failure mode interactions like yielding, local buckling, overall buckling, and stiffener tripping. This research utilizes recent experimental and numerical investigations on corroded ring-stiffened cylinder models. Experimental results validate the numerical analysis method, showing good agreement in collapse pressures (2–4% difference) and shapes. The validated numerical method is then subject to an extensive parametric study, systematically varying corrosion characteristics. Results indicate a clear relationship between corrosion volume and strength reduction, with overall buckling being more sensitive. Based on these comprehensive results, a new empirical strength reduction factor (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>ρ</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></semantics></math></inline-formula>) is derived as a function of the corrosion volume ratio (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>V</mi></mrow><mrow><mi>n</mi><mi>o</mi><mi>n</mi></mrow></msub></mrow></semantics></math></inline-formula>). This factor is integrated into the existing ultimate strength formula, allowing direct residual strength estimation for corroded structures. The proposed formula is rigorously verified against experimental and numerical data, showing excellent agreement (mean 1.00, COV 5.86%). This research provides a practical, accurate design tool for assessing the integrity and service life of corroded stiffened cylindrical structures.https://www.mdpi.com/2077-1312/13/7/1381corrosion damageresidual strengthring-stiffened cylinderdesign formulationstrength reduction factor |
| spellingShingle | Sang-Hyun Park Byoungjae Park Sang-Rai Cho Sung-Ju Park Kookhyun Kim Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures Journal of Marine Science and Engineering corrosion damage residual strength ring-stiffened cylinder design formulation strength reduction factor |
| title | Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures |
| title_full | Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures |
| title_fullStr | Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures |
| title_full_unstemmed | Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures |
| title_short | Development of a Design Formula for Estimating the Residual Strength of Corroded Stiffened Cylindrical Structures |
| title_sort | development of a design formula for estimating the residual strength of corroded stiffened cylindrical structures |
| topic | corrosion damage residual strength ring-stiffened cylinder design formulation strength reduction factor |
| url | https://www.mdpi.com/2077-1312/13/7/1381 |
| work_keys_str_mv | AT sanghyunpark developmentofadesignformulaforestimatingtheresidualstrengthofcorrodedstiffenedcylindricalstructures AT byoungjaepark developmentofadesignformulaforestimatingtheresidualstrengthofcorrodedstiffenedcylindricalstructures AT sangraicho developmentofadesignformulaforestimatingtheresidualstrengthofcorrodedstiffenedcylindricalstructures AT sungjupark developmentofadesignformulaforestimatingtheresidualstrengthofcorrodedstiffenedcylindricalstructures AT kookhyunkim developmentofadesignformulaforestimatingtheresidualstrengthofcorrodedstiffenedcylindricalstructures |