Dynamic shear instabilities in metallic sheets subjected to shear-compression loading

Rodríguez-Martínez, José A.; Vaz-Romero, Álvaro; N Souglo, Komi Espoir; Vadillo, Guadalupe

Publication:
Dynamic shear instabilities in metallic sheets subjected to shear-compression loading

dc.affiliation.dpto	UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Dinámica y Fractura de Elementos Estructurales	es
dc.contributor.author	Rodríguez-Martínez, José A.
dc.contributor.author	Vaz-Romero, Álvaro
dc.contributor.author	N Souglo, Komi Espoir
dc.contributor.author	Vadillo, Guadalupe
dc.contributor.funder	European Commission	en
dc.date.accessioned	2020-10-26T13:30:52Z
dc.date.available	2022-11-01T00:00:07Z
dc.date.issued	2020-11
dc.description.abstract	This paper presents an investigation on the formation of adiabatic shear bands in metallic sheets subjected to dynamic shear-compression loading under plane-stress conditions. For that purpose, we have developed a theoretical model based on perturbation analysis, and have performed finite element calculations. The material behavior has been modeled with von Mises plasticity, and the evolution of the yield stress has been considered dependent on plastic strain, plastic strain rate, and temperature. The theoretical model extends the linear stability analysis for simple-shear formulated by Molinari (1997) to shear-compression loading. The numerical simulations have been performed in ABAQUS/Explicit (2016) using a unit-cell model based on the work of Rodríguez-Martínez et al. (2015) in which the shear band formation is favored introducing geometric and material imperfections. Moreover, we have developed a calibration procedure for the stability analysis that enables to make qualitative and quantitative comparisons with the finite element calculations. Both stability analysis predictions and finite element results display the same overall trends, and show that any small negative triaxiality has a profound stabilizing effect on the material behavior delaying, or even preventing, the formation of a shear band. This key outcome has been substantiated for a wide range of strain rates and for materials with different strain hardening coefficients, strain rate sensitivities, and thermal softening behaviors.	en
dc.description.sponsorship	The research leading to these results has received funding from the European Union’s Horizon2020 Programme (Excellent Science, Marie-Sklodowska-Curie Actions) under REA grant agreement 777896 (Project QUANTIFY).	en
dc.format.extent	24	es
dc.identifier.bibliographicCitation	Journal of the Mechanics and Physics of Solids, 144, Nov. 2020, 104108, 24 pp.	en
dc.identifier.doi	https://doi.org/10.1016/j.jmps.2020.104108
dc.identifier.issn	0022-5096
dc.identifier.issn	1873-4782 (online)
dc.identifier.publicationfirstpage	1	es
dc.identifier.publicationlastpage	24	es
dc.identifier.publicationtitle	JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS	en
dc.identifier.publicationvolume	144 (104108)	es
dc.identifier.uri	https://hdl.handle.net/10016/31302
dc.identifier.uxxi	AR/0000026119
dc.language.iso	eng	en
dc.publisher	Elsevier Ltd.	en
dc.relation.projectID	info:eu-repo/grantAgreement/EC/H2020/777896/QUANTIFY	es
dc.rights	©2020 Elsevier Ltd. All rights reserved.	en
dc.rights	This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Ingeniería Mecánica	es
dc.subject.other	Shear-compression loading	en
dc.subject.other	Adiabatic shear bands	en
dc.subject.other	Inertia	en
dc.subject.other	Linear stability analysis	en
dc.subject.other	Finite element calculations	en
dc.title	Dynamic shear instabilities in metallic sheets subjected to shear-compression loading	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication