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Numerical analysis of residual stresses on microscale and mesoscale in hot bulk forming parts under specific cooling
Author(s) -
Uebing Sonja,
Brands Dominik,
Scheunemann Lisa,
Sarhil Mohammad,
Niekamp Rainer,
Kock Christoph,
Chugreev Alexander,
Behrens Bernd-Arno,
Schröder Jörg
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900017
Subject(s) - microscale chemistry , mesoscopic physics , residual stress , mesoscale meteorology , eigenstrain , materials science , austenite , martensite , residual , mechanics , computer simulation , stress (linguistics) , metallurgy , mathematics , geology , physics , microstructure , mathematics education , algorithm , climatology , linguistics , philosophy , quantum mechanics
The adjustment of targeted residual stress states is important in order to improve the properties of a component. Here, especially hot forming processes offer a meaningful potential since a number of parameters such as deformation state, temperature profile or cooling media can be adapted independently. This publication presents first simulation steps for the calculation of residual stresses on microscale and mesoscale. As a first application, the microscopic phase transformation from austenite to martensite due to a cooling process is considered. The arising mesoscopic eigenstrain distributions are used in the solution of an elasto‐plastic two‐scale boundary value problem to gain resulting residual stress states.