PSI - Issue 81

Ahsan Anugrah Elbar et al. / Procedia Structural Integrity 81 (2026) 3–10

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Fig. 8. Contour result of the trash box at 150% fill with pitting corrosion: (a) von Mises stress; and (b) displacement.

5. Conclusions The finite element analysis (FEA) results showed strong agreement with analytical calculations, validating the model’s accuracy with an average deviation of less than 6%. The comparison of loading conditions revealed that uniform pressure produced the highest deflection and stress, whereas triangular pressure produced lower structural responses due to its more gradual load distribution. The stress contours confirmed that the critical stresses were concentrated along the clamped boundaries and in the central regions of maximum bending. These findings demonstrate that plate behavior is highly dependent on load configuration and support conditions. The onset of pitting corrosion resulted in a significant reduction in structural stiffness and an increase in localized stress. As the corrosion depth increased from 10% to 30%, both the maximum deflection and the von Mises stress rose sharply, indicating accelerated mechanical degradation. This highlights that corrosion is a dominant factor affecting the plate’s performance and safety. Therefore, maintaining material integrity and minimizing corrosion exposure are crucial to ensuring the long-term durability and reliability of the ramp plate structure. Acknowledgements This work was supported by the RKAT PTNBH Universitas Sebelas Maret Year 2025, under the Research Scheme of “Penelitian Kola orasi Internasional” (KI -UNS), with research grant/contract no. 369/UN27.22/PT.01.03/2025. References Fuadi, A. P., Muttaqie, T., Nugroho, A. C. P. T., Kusuma, Y. F., Mukti, S., Kurniawan, M. A., Firmandha, T., Ismail, M. 2024. Patrol Boat Strengthening Against a Collision with COLL Notation Based on Class Rules and Regulation in Indonesia – An Overview. Mekanika: Majalah Ilmiah Mekanika, 23(1), 1 - 11. Islami, D. P., Adiputra, R., Pra owo, A. R., Ehlers, S., Braun, M., Jurkovič, M., Riyalda, B. F., Wi owo, W. 2025. Effects of crevice corrosion induced y iofouling on the mechanical response of engineered plate designs as an idealization of naval and marine structures. Ocean Engineering, 340(Part 2), 122406. Kamal, W. N. W. M., Saad, N. H., Ghani, A. R. A., A dullah, N. R., Jazam, K. I. A. 2013. Modelling and simulation of a single deck us su jected to rollover crash loading. Applied Mechanics and Materials, 393, 453–459. Kurniawan, A., Jayatri, F. N. M., Khasanah, K. 2022. Assessment of Water Quality Status of Cengklik Reservoir due to Eutrophication. IOP Conference Series: Earth and Environmental Science, 986(1), 012001. Malik, A. 2007. Environmental challenge vis a vis opportunity: The case of water hyacinth. Environment International, 33(1), 122–138. Malsyage, D., Bahatmaka, A., Kirana, A. C. C., Won, L. S., Hee, S. Y. 2025. Finite Element - Based Evaluation of Dou le - Hull Midsection Performance under O lique Collision. Mekanika: Majalah Ilmiah Mekanika, 24(2), 121 - 135. Melchers, R., Jeffrey, R. 2008. The critical involvement of anaero ic acterial activity in modelling the corrosion ehaviour of mild steel in marine environments. Electrochimica Acta, 54(1), 80–85. Melnyk, O., Islami, D. P., Adiputra, R. 2025. Finite Element Modeling of Thickness Reduction and Displacement Behavior in 316L Stainless Steel Plates Under Corrosion States. Mekanika: Majalah Ilmiah Mekanika, 24(2), 100 - 109. Mohammed, O., Suleiman, E., Osman, M. Y., Hassan, T. 2018. Validation of Finite Element Method in the Analysis of Biaxial Buckling of Thin Laminated Plates. International Journal of Engineering Research and Advanced Technology, 2(1), 29–42. Naufal, A. M., Pra owo, A. R., Muttaqie, T., Hidayat, A., Purwono, J., Adiputra, R., Ak ar, H. I., Smaradhana, D. F. 2024. Characterization of sandwich materials – Nomex - Aramid car on fi er performances under mechanical loadings: Nonlinear FE and convergence studies. Reviews on Advanced Materials Science, 63(1), 20230177. Pra owo, A. R., Ridwan, R., Braun, M., Song, S., Ehlers, S., Firdaus, N., Adiputra, R. 2023. Comparative study of shell element formulations as NLFE parameters to forecast structural crashworthiness. Curved and Layered Structures, 10(1), 20220217. Fitri, S. N., Mu arok, M. A. H., Hamadi, H., Do, Q. T., Pratama, A. A., Rommy, R. 2025. Masonry Wall Performance Estimation Under Blast Loading: A Study Using Finite Element Analysis. Mekanika: Majalah Ilmiah Mekanika, 24(1), 35 - 44.