Calculation Method for Cold Flow Stress of Al6082 Based on Tensile Test and Compression Test Results

A method to obtain flow stress in the plastic deformation state is investigated in this study. The flow stress prior to necking is calculated based on Hollomon’s constitutive equation using the strain rate and stress obtained from a tensile test, whereas the strain hardening coefficient after neckin...

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Published in:International journal of precision engineering and manufacturing 2021-08, Vol.22 (8), p.1337-1344
Main Authors: Lee, Hyoung-Woo, Yoo, Jae-Hong, Kwon, Yong-Chul, Kang, Jong-Hun
Format: Article
Language:English
Subjects:
Cold flow
Compression tests
Constitutive equations
Constitutive relationships
Ductile fracture
Engineering
Finite element analysis
Finite element method
Heat treating
Industrial and Production Engineering
Materials Science
Mathematical analysis
Necking
Plastic deformation
Regular Paper
Strain hardening
Strain rate
Tensile tests
Two dimensional analysis
Two dimensional flow
Yield strength
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cited_by cdi_FETCH-LOGICAL-c353t-3e3d6229ec322c814ddf9384b13065f357199fa634058b57dd0fbdc3a68c62483
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container_issue 8
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container_title International journal of precision engineering and manufacturing
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creator Lee, Hyoung-Woo
Yoo, Jae-Hong
Kwon, Yong-Chul
Kang, Jong-Hun
description A method to obtain flow stress in the plastic deformation state is investigated in this study. The flow stress prior to necking is calculated based on Hollomon’s constitutive equation using the strain rate and stress obtained from a tensile test, whereas the strain hardening coefficient after necking is obtained using the stress and strain rate obtained from a compression test; subsequently, the two flow stresses are combined. Two-dimensional rigid plastic finite element analysis considering ductile fracture in the stress test is conducted by inputting the proposed flow stress. It is confirmed that the shape and dimensions of the necking part on the load–displacement curve from the finite element analysis are similar to those obtained experimentally, thereby confirming the validity of the proposed flow stress calculation.
doi_str_mv 10.1007/s12541-021-00538-6
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ispartof International journal of precision engineering and manufacturing, 2021-08, Vol.22 (8), p.1337-1344
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2005-4602
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subjects Cold flow
Compression tests
Constitutive equations
Constitutive relationships
Ductile fracture
Engineering
Finite element analysis
Finite element method
Heat treating
Industrial and Production Engineering
Materials Science
Mathematical analysis
Necking
Plastic deformation
Regular Paper
Strain hardening
Strain rate
Tensile tests
Two dimensional analysis
Two dimensional flow
Yield strength
title Calculation Method for Cold Flow Stress of Al6082 Based on Tensile Test and Compression Test Results
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