PSI - Issue 81

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ScienceDirect

Procedia Structural Integrity 81 (2026) 170–176

© 2026 The Authors. Copy from the contract: 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 DMDP 2025 organizers Keywords: welded truss, computer simulation experiment, deformation behavior of the structure, load-bearing capacity, truss stability loss. 1. Introduction Welded trusses with parallel chords are typical load-bearing steel structures commonly used in industrial and public buildings with medium and large spans between supports. This determines the structural layout and loading scheme for such constructions. Under these conditions, the main type of loading is static loads applied to the nodes of the upper chord. However, such a truss, within a planar or spatial structure, can be used as a load-bearing element subjected to cyclic loading (bridge span elements, suspended conveyors, components of lifting cranes, power transmission line supports, etc.). For this reason, a number of studies have been conducted for trusses of this configuration. Thus, in the study by Kovalchuk and Shynhera (2017), a computer modeling experiment using ANSYS Workbench 14.5 investigated the influence of the angle profile height on the deformation of a rectangular welded truss measuring 18000×3600 mm. The research determined the locations of maximum stress formation and identified the magnitude of the maximum permissible load leading to the limit state of the structure. In the study of truss structures using computer simulation experiments, the obtained results demonstrate a high level of consistency with the indicators revealed through full-scale and semi-scale physical experiments. For example, in work by Shved et al. (2022), such results were compared under thermal loading conditions applied to a rectangular truss with parallel chords, and the agreement of temperature deformation values was found to be 95.8 – 98.7%. Abstract A study was carried out on a trapezoidal welded truss 8000×560 mm with parallel chords subjected to operational loads applied to the nodes of the lower chord. A computer simulation experiment was performed using the SolidWorks software package. Structural, technological, and operational factors of the real truss design were taken into account. Numerical datasets and graphical information were obtained regarding the parameters of the stress-strain state in the structural elements of the truss under different levels of operational loading. The results show that the highest stresses are formed in the support-adjacent areas of the upper chord. The maximum permissible operational load on the lower chord is 560 kN. The findings support the safe operation of the investigated truss. VIII International Conference “In - service Damage of Materials: Diagnostics and Prediction“ (DMDP 2025) Deformation of a welded truss under loading of the upper chord Yaroslav Kovalchuk*, Halyna Kramar, Lyudmyla Bodrova, Natalya Shynhera, Makar Shynhera Ternopil Ivan Puluj National Technical University, 56, Ruska Str., Ternopil, 46001, Ukraine

* Corresponding author. Tel.: +380965687319; fax: +380 352 254983. E-mail address: yarkv@i.ua

2452-3216 © 2026 The Authors. Copy from the contract: 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 DMDP 2025 organizers 10.1016/j.prostr.2026.03.030