PSI - Issue 57

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

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Procedia Structural Integrity 57 (2024) 524–531 Fatigue Design 2023 (FatDes 2023) Implementation of the Peak Stress Method Fatigue Design 2023 (FatDes 2023) Implementation of the Peak Stress Method for the automated FEA-assisted design of welded joints subjected to variable amplitude multiaxial fatigue loads Alberto Visentin a , Luca Vecchiato a , Alberto Campagnolo a , Daniele Rigon a , Vittorio Babini b and Giovanni Meneghetti a * a Department of Industrial Engineering, University of Padova, Via Venezia 1, Padova 35131, Italy a Antonio Zamperla S.p.a, Via Monte Grappa 15/17, Altavilla Vicentina, 36007, Italy Abstract The PSM is an engineering FE-oriented local approach to estimate the fatigue lifetime of steel welded structures under constant amplitude (CA) loads and has been previously validated against more than 1300 experimental data. The PSM has been recently re formulated to account for Variable Amplitude (VA) uniaxial as well as multiaxial loadings. To this purpose, it has been combined with Palmgren- Miner’s Linear Damage Rule and the extended formulation has been successfully validated against a large bulk of VA fatigue data available in the literature. In addition, an automated analysis tool has recently been developed in Ansys® Mechanical, taking advantage of Ansys® Customization Toolkit, to support the FE analyst in the fatigue design of welded structures according to the PSM. In the present investigation, the automated algorithm has been extended to the newly developed multiaxial VA formulation of the PSM. The output of the automated tool are edge-contour plots and graphs of the fatigue life, allowing the analyst to rapidly single out the most critical point in the structure among all competing crack initiation sites. for the automated FEA-assisted design of welded joints subjected to variable amplitude multiaxial fatigue loads Alberto Visentin a , Luca Vecchiato a , Alberto Campagnolo a , Daniele Rigon a , Vittorio Babini b and Giovanni Meneghetti a * a Department of Industrial Engineering, University of Padova, Via Venezia 1, Padova 35131, Italy a Antonio Zamperla S.p.a, Via Monte Grappa 15/17, Altavilla Vicentina, 36007, Italy © 2024 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 scientific committee of the Fatigue Design 2023 organizers © 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 scientific committee of the Fatigue Design 2023 organizers Keywords: welded joint; structural steel; fatigue; variable amplitude; Peak Stress Method Abstract The PSM is an engineering FE-oriented local approach to estimate the fatigue lifetime of steel welded structures under constant amplitude (CA) loads and has been previously validated against more than 1300 experimental data. The PSM has been recently re formulated to account for Variable Amplitude (VA) uniaxial as well as multiaxial loadings. To this purpose, it has been combined with Palmgren- Miner’s Linear Damage Rule and the extended formulation has been successfully validated against a large bulk of VA fatigue data available in the literature. In addition, an automated analysis tool has recently been developed in Ansys® Mechanical, taking advantage of Ansys® Customization Toolkit, to support the FE analyst in the fatigue design of welded structures according to the PSM. In the present investigation, the automated algorithm has been extended to the newly developed multiaxial VA formulation of the PSM. The output of the automated tool are edge-contour plots and graphs of the fatigue life, allowing the analyst to rapidly single out the most critical point in the structure among all competing crack initiation sites. © 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 scientific committee of the Fatigue Design 2023 organizers Keywords: welded joint; structural steel; fatigue; variable amplitude; Peak Stress Method 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 scientific committee of the Fatigue Design 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 scientific committee of the Fatigue Design 2023 organizers * Corresponding author. Tel.: +39 049 827 67 51 E-mail address: giovanni.meneghetti@unipd.it * Corresponding author. Tel.: +39 049 827 67 51 E-mail address: giovanni.meneghetti@unipd.it

2452-3216 © 2024 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 scientific committee of the Fatigue Design 2023 organizers 10.1016/j.prostr.2024.03.058