Determination of the Actual Stress–Strain Diagram for Undermatching Welded Joint Using DIC and FEM
| Autor: | Aleksandar Sedmak, Nenad Zoran Milošević, Goran Mladenovic, Aleksandar Maslarevic, Miloš Milošević, Gordana Bakić, Vukić Lazić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
actual stress–strain diagram
undermatching weld martensitic steel DIC FEM Digital image correlation Technology Undermatching Welding Article law.invention law General Materials Science Joint (geology) Mathematics Stress concentration Microscopy QC120-168.85 business.industry Stress–strain curve Diagram QH201-278.5 Structural engineering Engineering (General). Civil engineering (General) Finite element method TK1-9971 Descriptive and experimental mechanics Electrical engineering. Electronics. Nuclear engineering TA1-2040 business |
| Zdroj: | Materials; Volume 14; Issue 16; Pages: 4691 Materials Materials, Vol 14, Iss 4691, p 4691 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14164691 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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