PSI - Issue 48

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000

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Procedia Structural Integrity 48 (2023) 88–95

© 2023 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 the IRAS 2023 organizers Abstract The research is based on structural elements of the connecting lug type. Numerical and experimental determination of stress and strain in lugs were done in this paper. Numeric al analysis was conducted by applying the finite element method in a „KOMIPS“ and „ABAQUS“ software. A well -chosen finite element mesh resulted the same stress values in both software. In the paper is shown how the strain and equivalent stress can be reduced if material is removed, by drilling holes. Deformed connection elements models with maximum displacements and stress field are given for all examined connecting lugs. Experimental testing was performed at the Laboratory for stress and deformation measurements, Faculty of Mechanical Engineering, Belgrade University, using „GOM“ equipment and „ ARAMIS' “ software application. The stress values obtained by numerical analysis and experimental testing differ by only about 4%. This paper demonstrates how it is possible to anticipate the results by applying FEM. © 2023 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 the IRAS 2023 organizers Keywords: connection elements; FEM; experiment; stress; strain 1. Introduction It is necessary to reliably determine exploitation behaviour of structural elements by applying contemporary numerical-experimental methods. The objective of the paper is to investigate stress and deformation field at the points of geometrical discontinuities of structural elements under the action of axial loading. Theoretical and experimental investigations show that in the zones, where the loaded element contour changes abruptly the local increase of stress occurs. Such zones are notches, holes of different shapes, points of abrupt curvature, as well as contact points between two elements mutually acting upon each other. Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Numerical and experimental determination of stress and strain state in a connection lug Đorđe Đurđević a , Andrijana Đurđević a , * a The Academy of Applied Technical Studies, Katarine Ambrizić 3, Belgrade 11000, Serbia Abstract The research is based on structural elements of the connecting lug type. Numerical and experimental determination of stress and strain in lugs were done in this paper. Numeric al analysis was conducted by applying the finite element method in a „KOMIPS“ and „ABAQUS“ software. A well -chosen finite element mesh resulted the same stress values in both software. In the paper is shown how the strain and equivalent stress can be reduced if material is removed, by drilling holes. Deformed connection elements models with maximum displacements and stress field are given for all examined connecting lugs. Experimental testing was performed at the Laboratory for stress and deformation measurements, Faculty of Mechanical Engineering, Belgrade University, using „GOM“ equipment and „ ARAMIS' “ software application. The stress values obtained by numerical analysis and experimental testing differ by only about 4%. This paper demonstrates how it is possible to anticipate the results by applying FEM. © 2023 The Authors. Published by ELSEVIER B.V. Keywords: connection elements; FEM; experiment; stress; strain 1. Introduction It is necessary to reliably determine exploitation behaviour of structural elements by applying contemporary numerical-experimental methods. The objective of the paper is to investigate stress and deformation field at the points of geometrical discontinuities of structural elements under the action of axial loading. Theoretical and experimental investigations show that in the zones, where the loaded element contour changes abruptly the local increase of stress occurs. Such zones are notches, holes of different shapes, points of abrupt curvature, as well as contact points between two elements mutually acting upon each other. Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Numerical and experimental determination of stress and strain state in a connection lug Đorđe Đurđević a , Andrijana Đurđević a , * a The Academy of Applied Technical Studies, Katarine Ambrizić 3, Belgrade 11000, Serbia

* Corresponding author. Tel.: /; fax: /. E-mail address: andrijana.miler@yahoo.com * Corresponding author. Tel.: /; fax: /. E-mail address: andrijana.miler@yahoo.com

2452-3216 © 2023 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 the IRAS 2023 organizers 2452-3216 © 2023 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 the IRAS 2023 organizers

2452-3216 © 2023 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 the IRAS 2023 organizers 10.1016/j.prostr.2023.07.114