Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test

Plane-strain forming limit strain (also known as FLD 0 ) is an important data point on a forming limit diagram (FLD). The effects of friction coefficients and material parameters on the specimen width associated with the FLD 0 ( W FLD 0 ) in Marciniak test were studied by finite element simulation....

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Bibliographic Details
Published in:Journal of iron and steel research, international international, 2018-05, Vol.25 (5), p.539-545
Main Authors: Yang, Qing-bao, Min, Jun-ying, Carsley, John E., Wen, Yuan-yuan, Kuhlenkötter, Bernd, Stoughton, Thomas B., Lin, Jian-ping
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Engineering
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Original Paper
Physical Chemistry
Processes
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Summary:Plane-strain forming limit strain (also known as FLD 0 ) is an important data point on a forming limit diagram (FLD). The effects of friction coefficients and material parameters on the specimen width associated with the FLD 0 ( W FLD 0 ) in Marciniak test were studied by finite element simulation. W FLD 0 was expressed as a function of the Lankford coefficients, n -value, k -value and sheet thickness and validated with various sheet materials. The determination of W FLD 0 is of significance not only to reduce iterative attempts to accurately obtain FLD 0 , but also to obtain a full valid FLD with the least number of test specimens, which largely increases the efficiency and reduces cost to experimentally measure valid FLDs.
ISSN:1006-706X
2210-3988
DOI:10.1007/s42243-018-0062-y