DOI : https://doi.org/10.18517/ijaseit.15.3.13071

Enhancing the Service Life of Culmon Under Seawater-Induced Buckling through Conventional Shot Peening: A Numerical Approach

Ali A.M. Al-Jawaheri (1), Zied Driss (2), Hussain Jasim M. Alalkawi (3)
(1) National School of Engineering of Tunis, University of Tunis El Manar, Tunisia
(2) National School of Engineers of Sfax, Tunisia
(3) National School of Engineering of Tunis, University of Tunis El Manar, Tunisia
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A. A. Al-Jawaheri, Z. Driss, and H. J. M. Alalkawi, “Enhancing the Service Life of Culmon Under Seawater-Induced Buckling through Conventional Shot Peening: A Numerical Approach”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 15, no. 3, pp. 821–829, Jun. 2025.
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This research presents a detailed experimental and numerical investigation into the buckling behavior of three metallic alloys—304 Stainless Steel, AA 6061-T6, and AA 2017-T4—subjected to shot peening treatment and elevated temperature conditions. A total of 48 column specimens were tested in both untreated and shot-peened conditions at room temperature and under thermal exposure ranging from 25°C to 500°C. The experimental results demonstrated that thermal exposure led to significant reductions in critical buckling load, with AA 6061-T6 showing the most significant decrease, up to 45%, highlighting its temperature sensitivity. In contrast, shot peening enhanced buckling resistance across all materials, with improvements ranging from 20% to 35%. For instance, 304 Stainless Steel increased from 217 N to 287 N, while AA 2017-T4 showed an increase from 232 N to 306 N after peening. Numerical models were developed using ANSYS to simulate buckling performance under identical loading and boundary conditions. The simulation results showed strong agreement with the experimental data, with maximum deviations of less than 6%. The mode shapes and stress concentration zones observed in the simulations accurately reflected physical deformations. Mesh sensitivity and material property calibration ensured high model accuracy. Among the tested materials, AA 2017-T4 demonstrated superior performance in both strength and thermal stability, making it the most promising candidate for load-bearing components exposed to heat. This study highlights the combined influence of surface treatment and thermal conditions on buckling behavior, offering practical guidance for structural design in thermomechanical environments such as aerospace, automotive, and energy systems.

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