PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 315–322

12th Annual Conference of Society for Structural Integrity and Life (DIVK12) Stress-deformed state of compressed-bent and stretched-bent wooden elements Denys Mykhailovskyi a , Petro Gomon b , Ihor Mudryy c, *, Olena Pakholiuk d , Viktor Karbovskyi d , Pavlo Shevchuk d , Oleh Hlushenko d , Andrii Oksentiuk d a Kyiv National University of Construction and Architecture, Povitroflotskyi Avenue 31, 03037 Kyiv, Ukraine b National University of Water and Environmental Engineering, Soborna 11, 33000 Rivne, Ukraine Abstract The basics of calculating the stress-strain state of wooden elements and constructures under difficult types of loads is shown in the article. The equation of equilibrium of the stress-strain state in the cross-section of a bending curved wooden element is given. The paper describes three stages of the stress-strain state of a curved wooden element: a compressed-bent element with a large eccentricity; a compressed-bent element with a small eccentricity; and a stretched-bent element. © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia c Lviv Polytechnic National University, S. Bandery 12, 79013, Lviv, Ukraine d Lutsk National Technical University, Lvivska 75, 43018 Lutsk, Ukraine

Keywords: wooden element; eccentricity; stressed-state state; loading; elastic-plastic model

1. Introduction Wooden materials and elements are resistant to various aggressive environments (Homon et al. (2023); Fojtik (2019); Janiak et al. (2023); Roshchuk et al. (2024)). Basically, they work on compression (Aleksiievets et al. (2024); Homon et al. (2023)), stretching, bending (Gomon et al. (2022); Pavluk et al. (2023); Sobczak-Piastka et al. (2023)) and for more complex loads. Diagrams of deformation of solid, glued and modified wood under compression (Yasniy

* Corresponding author. Tel.: +38-067-928-25-42. E-mail address: qwert_2024@ukr.net

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 10.1016/j.prostr.2025.08.109