<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Defects/imperfections can occur during manufacturing, assembly, welding, and other processes, which can reduce the critical buckling load. However, the axial buckling load is beyond the scope of this work, and there are many studies on the stiffening effect of longitudinal dents. This concept combined the idea of the dent-to-stiffener evaluation concept for thin-walled steel cylinders. This study aims to transform the dents into artificial dents for a stiffening effect on the buckling phenomena. For this purpose, 37 thin-walled steel cylinder models, including the perfect model, were designed for varying dent shapes, dent widths, dent depths, dent lengths, and dent angles. The study also contributed to the effect of dent parameters on the critical buckling load of thin-walled steel cylinders. In particular, increasing the initial buckling will motivate the industry to convert dents into stiffeners with small artificial touches to enhance the longevity of the structure. The results showed that the introduction of certain artificial dents can significantly increase the critical buckling load of cylinders, thus improving their resistance against buckling, which has significant implications for various industries that use thin-walled steel cylinders in their structures. The proposed simulations for transforming dents into artificial stiffeners can be a valuable tool for enhancing the longevity and safety of thin-walled steel cylinders and other structures.</p>
</abstract>

Defects/imperfections can occur during manufacturing, assembly, welding, and other processes, which can reduce the critical buckling load. However, the axial buckling load is beyond the scope of this work, and there are many studies on the stiffening effect of longitudinal dents. This concept combined the idea of the dent-to-stiffener evaluation concept for thin-walled steel cylinders. This study aims to transform the dents into artificial dents for a stiffening effect on the buckling phenomena. For this purpose, 37 thin-walled steel cylinder models, including the perfect model, were designed for varying dent shapes, dent widths, dent depths, dent lengths, and dent angles. The study also contributed to the effect of dent parameters on the critical buckling load of thin-walled steel cylinders. In particular, increasing the initial buckling will motivate the industry to convert dents into stiffeners with small artificial touches to enhance the longevity of the structure. The results showed that the introduction of certain artificial dents can significantly increase the critical buckling load of cylinders, thus improving their resistance against buckling, which has significant implications for various industries that use thin-walled steel cylinders in their structures. The proposed simulations for transforming dents into artificial stiffeners can be a valuable tool for enhancing the longevity and safety of thin-walled steel cylinders and other structures.

Dent-to-Stiffener Evaluation Concept for Thin-Walled Steel Cylinders

Engineering Faculty, Department of Civil Engineering

Engineering & Architecture Faculty, Department of Civil Engineering

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Dent-to-Stiffener Evaluation Concept for Thin-Walled Steel Cylinders"}

Defects/imperfections can occur during manufacturing, assembly, welding, and other processes, which can reduce the critical buckling load. However, the axial...

Cylindrical shell	R (mm)	L (mm)	t (mm)	Young's modulus (GPa)	Poisson's ratio (γ)	FE eigen buckling pressure (MPa)
Cylindrical shell	R (mm)	L (mm)	t (mm)	Young's modulus (GPa)	Poisson's ratio (γ)	Combescure and Gusic	Rathinam and Prabu	From present analysis
A	50	20	0.15	200	0.3	0.2936	0.2927	0.2985

Cylindrical shell	R (mm)	L (mm)	t (mm)	Young's modulus (GPa)	Poisson's ratio (γ)	FE eigen buckling pressure (MPa)
Cylindrical shell	R (mm)	L (mm)	t (mm)	Young's modulus (GPa)	Poisson's ratio (γ)	Windernburg and Trilling	Rathinamn and Prabu	From present analysis
53	203.2	406.4	0.8	193	0.3	0.096 (8)	0.108 (8)	0.111 (8)

Dent-to-Stiffener Evaluation Concept for Thin-Walled Steel Cylinders

Published Online: Oct 20, 2023

Page range: 43 - 54

Received: Sep 20, 2022

Accepted: Jun 16, 2023

DOI: https://doi.org/10.2478/acee-2023-0032

Keywords
Dent shape, External pressure, Imperfection effect, Stiffener, Thin-walled

© 2023 Oğuzhan Akarsu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Comparison with buckling pressure of the cylindrical shell given in Combescure and Gusic [27] and Rathinam and Prabu [13]

Material Properties [12]

Comparison with buckling pressure of the cylindrical shell given in Windernburg and Trilling [28] and Rathinam and Prabu [13]

Dent-to-Stiffener Evaluation Concept for Thin-Walled Steel Cylinders

Published Online: Oct 20, 2023

Page range: 43 - 54

Received: Sep 20, 2022

Accepted: Jun 16, 2023

DOI: https://doi.org/10.2478/acee-2023-0032

KeywordsDent shape, External pressure, Imperfection effect, Stiffener, Thin-walled

© 2023 Oğuzhan Akarsu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Comparison with buckling pressure of the cylindrical shell given in Combescure and Gusic [27] and Rathinam and Prabu [13]

Material Properties [12]

Comparison with buckling pressure of the cylindrical shell given in Windernburg and Trilling [28] and Rathinam and Prabu [13]

Keywords
Dent shape, External pressure, Imperfection effect, Stiffener, Thin-walled