Numerische Prozessauslegung zur gezielten Eigenspannungseinstellung in warmmassivumgeformten Bauteilen unter Berücksichtigung von Makro- und Mikroskala

verfasst von: Bernd Arno Behrens, Jörg Schröder, Dominik Brands, Kai Brunotte, Hendrik Wester, Lisa Scheunemann, Sonja Uebing, Christoph Kock
Abstract: The aim of this work is the adjustment of an advantageous compressive residual stress profile in hot-formed components by intelligent process control with tailored cooling from the forging heat. The feasibility and potential are demonstrated in a hot forming process in which cylindrical specimen with an eccentric hole are formed at 1000 °C and subsequently cooled in water from the forging heat. Previous work shows that tensile residual stresses occur in the specimen formed in this way from the material 1.3505. Using the presented multi-scale FE models, an alternative process variant is analysed in this work, where advantageous compressive residual stresses can be generated instead of tensile residual stresses through tailored cooling from the forming heat in the specimen. The tailored cooling is achieved by partially exposing the specimen to a water-air spray. In this way, the local plastification can be influenced by inhomogeneous strains due to thermal and transformation-induced effects in order to customise the resulting residual stress distribution. The scientific challenge of this work is to generate different residual stresses in the surface of the specimen without changing the geometrical and microstructural properties. It is demonstrated that influencing the residual stresses and even reversing the stress sign is possible using smart process control during cooling.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Externe Organisation(en): Universität Duisburg-Essen
Typ: Artikel
Journal: Forschung im Ingenieurwesen/Engineering Research
Band: 85
Seiten: 757–771
Anzahl der Seiten: 15
ISSN: 0015-7899
Publikationsdatum: 09.2021
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Ingenieurwesen (insg.)
Elektronische Version(en): https://doi.org/10.1007/s10010-021-00482-x (Zugang: Offen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@article{a1ea170e40a5478ab850908ccc02768a,
title = "Numerische Prozessauslegung zur gezielten Eigenspannungseinstellung in warmmassivumgeformten Bauteilen unter Ber{\"u}cksichtigung von Makro- und Mikroskala",
abstract = "The aim of this work is the adjustment of an advantageous compressive residual stress profile in hot-formed components by intelligent process control with tailored cooling from the forging heat. The feasibility and potential are demonstrated in a hot forming process in which cylindrical specimen with an eccentric hole are formed at 1000 °C and subsequently cooled in water from the forging heat. Previous work shows that tensile residual stresses occur in the specimen formed in this way from the material 1.3505. Using the presented multi-scale FE models, an alternative process variant is analysed in this work, where advantageous compressive residual stresses can be generated instead of tensile residual stresses through tailored cooling from the forming heat in the specimen. The tailored cooling is achieved by partially exposing the specimen to a water-air spray. In this way, the local plastification can be influenced by inhomogeneous strains due to thermal and transformation-induced effects in order to customise the resulting residual stress distribution. The scientific challenge of this work is to generate different residual stresses in the surface of the specimen without changing the geometrical and microstructural properties. It is demonstrated that influencing the residual stresses and even reversing the stress sign is possible using smart process control during cooling.",
author = "Behrens, {Bernd Arno} and J{\"o}rg Schr{\"o}der and Dominik Brands and Kai Brunotte and Hendrik Wester and Lisa Scheunemann and Sonja Uebing and Christoph Kock",
note = "Funding Information: Die Autoren bedanken sich f{\"u}r die vom Center for Computational Sciences and Simulation (CCSS) der Universit{\"a}t Duisburg-Essen zur Verf{\"u}gung gestellte Rechenzeit auf dem Supercomputer magnitUDE (DFG-F{\"o}rderung INST 20876/209-1 FUGG, INST 20876/243-1 FUGG) am Zentrum f{\"u}r Informations- und Mediendienste (ZIM). Gef{\"o}rdert durch die Deutsche Forschungsgemeinschaft (DFG)?? 374871564 (BE?1691/223-2; SCHR 570/33-2; BR 5278/3-2) im Rahmen des Schwerpunktprogramms SPP?2013. ",
year = "2021",
month = sep,
doi = "10.1007/s10010-021-00482-x",
language = "Deutsch",
volume = "85",
pages = "757–771",
journal = "Forschung im Ingenieurwesen/Engineering Research",
issn = "0015-7899",
publisher = "Springer Verlag",
number = "3",
}