A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Finite element analysis of corroded steel beams
This research project analyzes the structural capacity of steel beams before and after corrosion using 3D steel beam models created with ABAQUS, a finite element modeling software. For analysis, ABAQUS-CAE (Computer-Aided Engineering) software shall be used. Corrosion losses at percentages of zero, five, seven, and nine of the cross-sectional area are modeled for three steel beam I-shaped geometries to determine the structural capacity before and after corrosion. A W14x82 was selected as one of the beam cross-sections in this study to provide a comparison with results obtained by Mr. Okafor in his master’s thesis [1]. Mr. Okafor considered non-corroded beam geometries only. The current work considers two additional cross-sections, W12x65 and W14x120. All beams models were 240 inches long and simply supported, which is consistent with previous research. The comparison of structural characteristics focused on nominal moment capacity, critical loads, and bending stresses before and after corrosion. Results for corroded and non-corroded models obtained from ABAQUS have been compared to capacity estimates using the 15th edition of the AISC Steel Construction Manual (or AISC manual) [2]. The AISC results were calculated assuming the decrease in plastic and elastic section modulus values, due to corrosion, applied throughout the length of the beams, whereas for analysis in ABAQUS corrosion was limited to the beam ends of each model. The results obtained had a maximum difference below nine% between the calculations from the code and finite element analysis results. The relationship between corroded and non-corroded beam models showed a decrease of moment and load capacity by 22% for nine % corrosion in the zero-corrosion models.
Finite element analysis of corroded steel beams
This research project analyzes the structural capacity of steel beams before and after corrosion using 3D steel beam models created with ABAQUS, a finite element modeling software. For analysis, ABAQUS-CAE (Computer-Aided Engineering) software shall be used. Corrosion losses at percentages of zero, five, seven, and nine of the cross-sectional area are modeled for three steel beam I-shaped geometries to determine the structural capacity before and after corrosion. A W14x82 was selected as one of the beam cross-sections in this study to provide a comparison with results obtained by Mr. Okafor in his master’s thesis [1]. Mr. Okafor considered non-corroded beam geometries only. The current work considers two additional cross-sections, W12x65 and W14x120. All beams models were 240 inches long and simply supported, which is consistent with previous research. The comparison of structural characteristics focused on nominal moment capacity, critical loads, and bending stresses before and after corrosion. Results for corroded and non-corroded models obtained from ABAQUS have been compared to capacity estimates using the 15th edition of the AISC Steel Construction Manual (or AISC manual) [2]. The AISC results were calculated assuming the decrease in plastic and elastic section modulus values, due to corrosion, applied throughout the length of the beams, whereas for analysis in ABAQUS corrosion was limited to the beam ends of each model. The results obtained had a maximum difference below nine% between the calculations from the code and finite element analysis results. The relationship between corroded and non-corroded beam models showed a decrease of moment and load capacity by 22% for nine % corrosion in the zero-corrosion models.
Finite element analysis of corroded steel beams
Nepal, Sanjay (author)
2019-08-01
Miscellaneous
Electronic Resource
English
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