Simulation of Stress Concentrations in Notches
The fatigue life curves of materials are very sensitive to the magnitude of the stress amplitude. A small change or inaccuracy in the determination of the stress value causes large changes or inaccuracies in the calculated fatigue life estimate. Therefore, the use of computer simulations for fatigue...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-12-01
|
Series: | Metals |
Subjects: | |
Online Access: | https://www.mdpi.com/2075-4701/12/1/43 |
_version_ | 1797492001209319424 |
---|---|
author | Vladimír Chmelko Michal Harakaľ Pavel Žlábek Matúš Margetin Róbert Ďurka |
author_facet | Vladimír Chmelko Michal Harakaľ Pavel Žlábek Matúš Margetin Róbert Ďurka |
author_sort | Vladimír Chmelko |
collection | DOAJ |
description | The fatigue life curves of materials are very sensitive to the magnitude of the stress amplitude. A small change or inaccuracy in the determination of the stress value causes large changes or inaccuracies in the calculated fatigue life estimate. Therefore, the use of computer simulations for fatigue life estimation requires a proper model development methodology. The paper is devoted to the problem of the modeling of components in notches using FEM. The modeling parameters significantly influencing the obtained stress results have been defined. Exact analytical solutions served as a benchmark for comparing the accuracy of the stress values obtained using FEM models. For the selected 2D and 3D notched components, diagrams were created for sensitivity analysis of the influence of the mesh element density at the root of the notch in correlation with the exact analytical solution. The findings from model building were applied to model the stress concentration at the root of a V-weld joint in a gas pipeline. |
first_indexed | 2024-03-10T00:56:21Z |
format | Article |
id | doaj.art-055546ec925a4ab8930cd652d7fac462 |
institution | Directory Open Access Journal |
issn | 2075-4701 |
language | English |
last_indexed | 2024-03-10T00:56:21Z |
publishDate | 2021-12-01 |
publisher | MDPI AG |
record_format | Article |
series | Metals |
spelling | doaj.art-055546ec925a4ab8930cd652d7fac4622023-11-23T14:41:27ZengMDPI AGMetals2075-47012021-12-011214310.3390/met12010043Simulation of Stress Concentrations in NotchesVladimír Chmelko0Michal Harakaľ1Pavel Žlábek2Matúš Margetin3Róbert Ďurka4Institute of Applied Mechanics and Mechatronics, Slovak University of Technology in Bratislava, Námestie Slobody 17, 81231 Bratislava, SlovakiaInstitute of Applied Mechanics and Mechatronics, Slovak University of Technology in Bratislava, Námestie Slobody 17, 81231 Bratislava, SlovakiaRegional Technological Institute, University of West Bohemia, Universitní 8, 306 14 Pilsen, Czech RepublicInstitute of Applied Mechanics and Mechatronics, Slovak University of Technology in Bratislava, Námestie Slobody 17, 81231 Bratislava, SlovakiaInstitute of Applied Mechanics and Mechatronics, Slovak University of Technology in Bratislava, Námestie Slobody 17, 81231 Bratislava, SlovakiaThe fatigue life curves of materials are very sensitive to the magnitude of the stress amplitude. A small change or inaccuracy in the determination of the stress value causes large changes or inaccuracies in the calculated fatigue life estimate. Therefore, the use of computer simulations for fatigue life estimation requires a proper model development methodology. The paper is devoted to the problem of the modeling of components in notches using FEM. The modeling parameters significantly influencing the obtained stress results have been defined. Exact analytical solutions served as a benchmark for comparing the accuracy of the stress values obtained using FEM models. For the selected 2D and 3D notched components, diagrams were created for sensitivity analysis of the influence of the mesh element density at the root of the notch in correlation with the exact analytical solution. The findings from model building were applied to model the stress concentration at the root of a V-weld joint in a gas pipeline.https://www.mdpi.com/2075-4701/12/1/43notchFEM simulationstress concentrationanalytical solution |
spellingShingle | Vladimír Chmelko Michal Harakaľ Pavel Žlábek Matúš Margetin Róbert Ďurka Simulation of Stress Concentrations in Notches Metals notch FEM simulation stress concentration analytical solution |
title | Simulation of Stress Concentrations in Notches |
title_full | Simulation of Stress Concentrations in Notches |
title_fullStr | Simulation of Stress Concentrations in Notches |
title_full_unstemmed | Simulation of Stress Concentrations in Notches |
title_short | Simulation of Stress Concentrations in Notches |
title_sort | simulation of stress concentrations in notches |
topic | notch FEM simulation stress concentration analytical solution |
url | https://www.mdpi.com/2075-4701/12/1/43 |
work_keys_str_mv | AT vladimirchmelko simulationofstressconcentrationsinnotches AT michalharakal simulationofstressconcentrationsinnotches AT pavelzlabek simulationofstressconcentrationsinnotches AT matusmargetin simulationofstressconcentrationsinnotches AT robertdurka simulationofstressconcentrationsinnotches |