On Characteristics of Ferritic Steel Determined during the Uniaxial Tensile Test
| Autor: | Ihor Dzioba, Piotr Furmańczyk, Sebastian Lipiec, Robert Pała |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Modulus 02 engineering and technology Bending Edge (geometry) Plasticity Article true stress-strain relationships S355 steel uniaxial tensile test 0203 mechanical engineering Ultimate tensile strength General Materials Science Composite material Tensile testing Microscopy QC120-168.85 QH201-278.5 Stress–strain curve Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology strength properties Finite element method TK1-9971 020303 mechanical engineering & transports Descriptive and experimental mechanics Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology |
| Zdroj: | Materials Volume 14 Issue 11 Materials, Vol 14, Iss 3117, p 3117 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14113117 |
| Popis: | Tensile uniaxial test is typically used to determine the strength and plasticity of a material. Nominal (engineering) stress-strain relationship is suitable for determining properties when elastic strain dominates (e.g., yield strength, Young’s modulus). For loading conditions where plastic deformation is significant (in front of a crack tip or in a neck), the use of true stress and strain values and the relationship between them are required. Under these conditions, the dependence between the true values of stresses and strains should be treated as a characteristic—a constitutive relationship of the material. This article presents several methodologies to develop a constitutive relationship for S355 steel from tensile test data. The constitutive relationship developed was incorporated into a finite element analysis of the tension test and verified with the measured tensile test data. The method of the constitutive relationship defining takes into account the impact of high plastic strain, the triaxiality stress factor, Lode coefficient, and material weakness due to the formation of microvoids, which leads to obtained correctly results by FEM (finite elements method) calculation. The different variants of constitutive relationships were applied to the FEM loading simulation of the three-point bending SENB (single edge notched bend) specimen to evaluate their applicability to the calculation of mechanical fields in the presence of a crack. |
| Databáze: | OpenAIRE |
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