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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8398259 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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