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Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM

This paper presents new methodology for determining the actual stress–strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress–strain diagram by replacing common analyti...

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Autores principales: Milošević, Nenad Zoran, Sedmak, Aleksandar Stojan, Bakić, Gordana Miodrag, Lazić, Vukić, Milošević, Miloš, Mladenović, Goran, Maslarević, Aleksandar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398259/
https://www.ncbi.nlm.nih.gov/pubmed/34443213
http://dx.doi.org/10.3390/ma14164691
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author Milošević, Nenad Zoran
Sedmak, Aleksandar Stojan
Bakić, Gordana Miodrag
Lazić, Vukić
Milošević, Miloš
Mladenović, Goran
Maslarević, Aleksandar
author_facet Milošević, Nenad Zoran
Sedmak, Aleksandar Stojan
Bakić, Gordana Miodrag
Lazić, Vukić
Milošević, Miloš
Mladenović, Goran
Maslarević, Aleksandar
author_sort Milošević, Nenad Zoran
collection PubMed
description This paper presents new methodology for determining the actual stress–strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress–strain diagram by replacing common analytical expression for contraction with measured values. Next step was to estimate the stress concentration by using a new methodology, based on recently introduced analytical expressions and numerical verification by the finite element method (FEM), to obtain actual stress–strain diagrams, as named in this paper. The essence of new methodology is to introduce stress concentration factor into the procedure of actual stress evaluation. New methodology is then applied to determine actual stress–strain diagrams for two undermatched welded joints with different rectangular cross-section and groove shapes, made of martensitic steels X10 CrMoVNb 9-1 and Armox 500T. Results indicated that new methodology is a general one, since it is not dependent on welded joint material and geometry.
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spelling pubmed-83982592021-08-29 Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM Milošević, Nenad Zoran Sedmak, Aleksandar Stojan Bakić, Gordana Miodrag Lazić, Vukić Milošević, Miloš Mladenović, Goran Maslarević, Aleksandar Materials (Basel) Article This paper presents new methodology for determining the actual stress–strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress–strain diagram by replacing common analytical expression for contraction with measured values. Next step was to estimate the stress concentration by using a new methodology, based on recently introduced analytical expressions and numerical verification by the finite element method (FEM), to obtain actual stress–strain diagrams, as named in this paper. The essence of new methodology is to introduce stress concentration factor into the procedure of actual stress evaluation. New methodology is then applied to determine actual stress–strain diagrams for two undermatched welded joints with different rectangular cross-section and groove shapes, made of martensitic steels X10 CrMoVNb 9-1 and Armox 500T. Results indicated that new methodology is a general one, since it is not dependent on welded joint material and geometry. MDPI 2021-08-20 /pmc/articles/PMC8398259/ /pubmed/34443213 http://dx.doi.org/10.3390/ma14164691 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Milošević, Nenad Zoran
Sedmak, Aleksandar Stojan
Bakić, Gordana Miodrag
Lazić, Vukić
Milošević, Miloš
Mladenović, Goran
Maslarević, Aleksandar
Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title_full Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title_fullStr Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title_full_unstemmed Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title_short Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
title_sort determination of the actual stress–strain diagram for undermatching welded joint using dic and fem
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398259/
https://www.ncbi.nlm.nih.gov/pubmed/34443213
http://dx.doi.org/10.3390/ma14164691
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