dc.creator | Martínez Donaire, Andrés Jesús | es |
dc.creator | Morales-Palma, Domingo | es |
dc.creator | Vallellano Martín, Carpóforo | es |
dc.date.accessioned | 2020-10-08T18:16:09Z | |
dc.date.available | 2020-10-08T18:16:09Z | |
dc.date.issued | 2020-08 | |
dc.identifier.citation | Martínez Donaire, A.J., Morales-Palma, D. y Vallellano Martín, C. (2020). On the Use of Strain Path Independent Metrics and Critical Distance
Rule for Predicting Failure of AA7075-O Stretch-Bend Sheets. Materials, 13 (17). Article number 3660. | |
dc.identifier.issn | EISSN 1996-1944 | es |
dc.identifier.uri | https://hdl.handle.net/11441/101872 | |
dc.description.abstract | The strain-based forming limit curve is the traditional tool to assess the formability of metal
sheets. However, its application should be restricted to proportional loading processes under uniform
strain conditions. Several works have focused on overcoming this limitation to characterize the
safe process windows in industrial stretch-bend forming processes. In this paper, the use of critical
distance rule and two path-independent stress-based metrics are explored to numerically predict
failure of AA7075-O stretch-bend sheets with 1.6 mm thickness. Formability limits of the material
were experimentally obtained by means of a series of Nakazima and stretch-bending tests at di erent
thickness-over-radius ratios for inducing controlled non-uniform strain distributions across the sheet
thickness. By using a 3D calibrated finite element model, the strain-based forming limit curve was
numerically transformed into the path-independent stress and equivalent plastic strain polar spaces.
The numerical predictions of necking strains in the stretch-bending simulations using the above
approaches were successfully compared and critically discussed with the experimental results for
di erent values of the critical distance. It was found that failure was triggered by a critical material
volume of around the half thickness, measured from the inner surface, for the both path-independent
metrics analyzed. | es |
dc.description.sponsorship | Gobierno de España PGC2018-095508-B-I00 | es |
dc.format | application/pdf | es |
dc.format.extent | 19 p. | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.relation.ispartof | Materials, 13 (17). Article number 3660. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Formability limits | es |
dc.subject | Failure prediction | es |
dc.subject | Stretch-bend forming | es |
dc.subject | Critical distance rule (CDR) | es |
dc.subject | Strain path independent metrics | es |
dc.subject | AA7075-O | es |
dc.subject | Finite element analysis (FEA) | es |
dc.title | On the Use of Strain Path Independent Metrics and Critical Distance Rule for Predicting Failure of AA7075-O Stretch-Bend Sheets | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación | es |
dc.relation.projectID | PGC2018-095508-B-I00 | es |
dc.relation.publisherversion | https://doi.org/10.3390/ma13173660 | es |
dc.identifier.doi | 10.3390/ma13173660 | es |
dc.journaltitle | Materials | es |
dc.publication.volumen | 13 | es |
dc.publication.issue | 17 | es |
dc.publication.initialPage | Article number 3660 | es |
dc.contributor.funder | Gobierno de España | es |