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Identification of out-of-plane material characteristics through sheet-metal blankingBolka, Špela ; Slavič, Janko, 1978- ; Boltežar, MihaThe mechanical characteristics of sheet metals are typically identified in the in-plane direction, although the sheet-metal forming processes (e.g., blanking, deep-drawing) are normally applied in ... the out-of-plane direction. As the mechanical characteristics are not necessarily constant, their direct experimental evaluation through the forming process would enable material monitoring and process optimization, and, additionally, material characterization in the out-of-plane direction. Full, partial (to a certain depth) and sequential (consecutive partial steps to full penetration) blanking experiments are performed on a laboratory blanking apparatus to correlate the out-of-plane material characteristics with the in-plane ones. The well-established in-plane approach to damage is introduced for the out-of-plane direction to determine the isotropic Lemaitre damage variable. Furthermore, yield and ultimate shear stresses are determined and correlated to their respective in-plane counterparts, offering a new insight in the sheet-metal blanking process.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 61, no. 4, Apr. 2015, str. 217-226, SI 43)Type of material - article, component partPublish date - 2015Language - englishCOBISS.SI-ID - 13950235
Author
Bolka, Špela |
Slavič, Janko, 1978- |
Boltežar, Miha
Topics
cutting |
forming |
constitutive behavior |
elastic-plastic material |
out-of-plane experiment |
mechanical testing |
ductile damage |
rezanje |
preoblikovanje |
konstitutivne relacije |
elasto-plastični materiali |
mehanski testi |
žilavi lom |
eksperiment v smeri
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Bolka, Špela | 38779 |
Slavič, Janko, 1978- | 23010 |
Boltežar, Miha | 02034 |
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