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Characterisation of out-of-plane shear behaviour of anisotropic sheet materials based on indentation plastometrySatošek, Roman ; Pepelnjak, Tomaž ; Starman, Bojan, 1985-This paper presents a new methodology for characterising the out-of-plane plastic anisotropy behaviour of sheet metal, based on indentation testing. Conventionally, advanced yield criteria are used ... to describe plastic anisotropy, requiring multiple in-plane mechanical tests (such as uniaxial and biaxial tests) to calibrate a model. However, in certain forming applications (e.g. blanking, ironing and incremental forming), the influence of mechanical behaviour through thickness cannot be ignored, necessitating the characterisation of out-of-plane material behaviour. To do this, a 3D plastic anisotropy model must be used and calibrated for the out-of-plane shear parameters, which can be difficult to determine. Researchers often assume an isotropic case or equal shear parameters for in-plane and out-of-plane behaviour. More advanced calibrations involve the crystal plasticity model. In this work, we propose a two-stage calibration procedure. In the first stage, we calibrate the in-plane parameters of the YLD2004-18p yield function conventionally. In the second stage, after fixing the in-plane parameters, we determine the remaining out-of-plane shear parameters based on the results of the ball indentation test. We show for the first time that out-of-plane shear parameters can be determined from a macro-mechanical test for a 2.42 mm thick cold-rolled AA5754-H22 series aluminium sheet.Source: International journal of mechanical sciences. - ISSN 0020-7403 (Vol. 253, Sep. 2023, str. 1-15)Type of material - article, component part ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 149875203
Author
Satošek, Roman |
Pepelnjak, Tomaž |
Starman, Bojan, 1985-
Topics
plastic anisotropy |
out-of-plane shear resistance |
indentation test |
indentation plastometry |
YLD2004-18p |
yield function |
plastična anizotropija |
odpor proti strigu izven ravnine |
preskus z vtiskovanjem |
plastometrija z vtiskovanjem |
YLD2004-18p |
funkcija plastičnosti
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Database name | Field | Year |
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Satošek, Roman | |
Pepelnjak, Tomaž | 12957 |
Starman, Bojan, 1985- | 33274 |
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