Approximation of elastic-plastic local strains in surface-hardened notched components

Elastic-plastic strains at points relevant for structural failures are usually approximated using formulas based on the stresses determined by elasticity theory. For this purpose, the Neuber approximation is a common method to estimate the local elastic-plastic strains in the notch root, although th...

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Autores principales:	Yadegari Patrick, Schlitzer Teresa, Vormwald Michael
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/9bb732ca73414536a28adb4ceec60660
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id	oai:doaj.org-article:9bb732ca73414536a28adb4ceec60660
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spelling	oai:doaj.org-article:9bb732ca73414536a28adb4ceec606602021-12-02T17:13:46ZApproximation of elastic-plastic local strains in surface-hardened notched components2261-236X10.1051/matecconf/202134904008https://doaj.org/article/9bb732ca73414536a28adb4ceec606602021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04008.pdfhttps://doaj.org/toc/2261-236XElastic-plastic strains at points relevant for structural failures are usually approximated using formulas based on the stresses determined by elasticity theory. For this purpose, the Neuber approximation is a common method to estimate the local elastic-plastic strains in the notch root, although this is currently only approved for homogeneous components. For surfacehardened notched components, these approximation formulas need to be modified to cover two potential failure points: The notch root as well as the interface between the stronger surface layer and the weaker core material. In the following, a multi-step algorithm is shown that allows the estimation of elastic-plastic local strains at these two points, based on a single elasticitytheoretical solution. A comparison of the approximated values with those from finite element analyses (FEA) reveals that this results in only minor inaccuracies, while the usability is remarkable.Yadegari PatrickSchlitzer TeresaVormwald MichaelEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 04008 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Yadegari Patrick Schlitzer Teresa Vormwald Michael Approximation of elastic-plastic local strains in surface-hardened notched components
description	Elastic-plastic strains at points relevant for structural failures are usually approximated using formulas based on the stresses determined by elasticity theory. For this purpose, the Neuber approximation is a common method to estimate the local elastic-plastic strains in the notch root, although this is currently only approved for homogeneous components. For surfacehardened notched components, these approximation formulas need to be modified to cover two potential failure points: The notch root as well as the interface between the stronger surface layer and the weaker core material. In the following, a multi-step algorithm is shown that allows the estimation of elastic-plastic local strains at these two points, based on a single elasticitytheoretical solution. A comparison of the approximated values with those from finite element analyses (FEA) reveals that this results in only minor inaccuracies, while the usability is remarkable.
format	article
author	Yadegari Patrick Schlitzer Teresa Vormwald Michael
author_facet	Yadegari Patrick Schlitzer Teresa Vormwald Michael
author_sort	Yadegari Patrick
title	Approximation of elastic-plastic local strains in surface-hardened notched components
title_short	Approximation of elastic-plastic local strains in surface-hardened notched components
title_full	Approximation of elastic-plastic local strains in surface-hardened notched components
title_fullStr	Approximation of elastic-plastic local strains in surface-hardened notched components
title_full_unstemmed	Approximation of elastic-plastic local strains in surface-hardened notched components
title_sort	approximation of elastic-plastic local strains in surface-hardened notched components
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/9bb732ca73414536a28adb4ceec60660
work_keys_str_mv	AT yadegaripatrick approximationofelasticplasticlocalstrainsinsurfacehardenednotchedcomponents AT schlitzerteresa approximationofelasticplasticlocalstrainsinsurfacehardenednotchedcomponents AT vormwaldmichael approximationofelasticplasticlocalstrainsinsurfacehardenednotchedcomponents
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Approximation of elastic-plastic local strains in surface-hardened notched components

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