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Published in: Production Engineering 2/2019

25-01-2019 | Computer Aided Engineering

Evolution of residual stress distortion of a machined product for AA7085

Authors: Hyunsung Choi, Jeong Whan Yoon, Yong Nam Kwon, Daeyong Seong

Published in: Production Engineering | Issue 2/2019

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Abstract

This paper investigates the evolution of quench induced residual stress for AA7085 and the distortion of machined product by pre-existing residual stress. Finite Element (FE) simulations using Abaqus/Standard were conducted for the investigation. A constitutive model based on two state variables representing microstructure and precipitation effects during quench was used for the simulation. Uncoupled thermo-mechanical approach was adopted considering that strain and strain rate during quench are generally small. The accuracy of the FE model was verified through the residual stress prediction for AA7085 rectangular bar where the predicted residual stress was compared with the measured results from a slitting method. In addition, the effect of pre-existing residual stress on the distortion of machined product was numerically investigated. The simulation results showed a good prediction for the distortion of machined product by residual stress.
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Metadata
Title
Evolution of residual stress distortion of a machined product for AA7085
Authors
Hyunsung Choi
Jeong Whan Yoon
Yong Nam Kwon
Daeyong Seong
Publication date
25-01-2019
Publisher
Springer Berlin Heidelberg
Published in
Production Engineering / Issue 2/2019
Print ISSN: 0944-6524
Electronic ISSN: 1863-7353
DOI
https://doi.org/10.1007/s11740-019-00880-9

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