PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 128–134

Keywords: Delamination; Harmonic load; Multilayered beam-like structure; Spring 1. Introduction The beam-like structural components are broadly used in numerous applications in the engineering infrastructure. Therefore, exploring the behaviour of these components is of great importance for development and modernization of the engineering infrastructure. There are different ways for improving safety and increasing efficiency of beam-like structural components. One of the ways is to apply modern engineering materials for manufacturing of these structural components. In the current article, our attention is concentrated on beam-like structural components of multilayered Abstract The current article explores delamination in a multilayered beam-like structural component under harmonic load applied in its mid span. The component explored is symmetrically delaminated by two delaminations in its two ends. Besides, the component is placed on two springs. The delamination under harmonic load is explored by the integral J . The extreme values of the total J are estimated. The strain energy release rate (SERR) is deduced from the energy balance in the conditions of harmonic load for check up of J . The extremals of the total SERR confirms the maximum and minimum of the total J . The evolution of the total J with the spring constant, static and harmonic load is qualified. © 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 12th Annual Conference of Society for Structural Integrity and Life (DIVK12) Analysis of symmetrically delaminated beam-like structural component subjected to harmonic load Victor Rizov a, * a Department of Technical Mechanics, University of Architecture, Civil Engineering and Geodesy, 1 Chr. Smirnensky blvd., 1046 – Sofia, Bulgaria

* Corresponding author. Tel.: + (359-2) 963 52 45 / 664; fax: + (359-2) 86 56 863 E-mail address: v_rizov_fhe@uacg.bg

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.2025.08.083