Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.creatorHuang, K. (Kai)-
dc.creatorHernández-Delfín, D. (Dariel)-
dc.creatorRech, F. (Felix)-
dc.creatorDichtl, V. (Valentin)-
dc.creatorCruz-Hidalgo, R. (Raúl)-
dc.identifier.citationHuang, K. (Kai); Hernández-Delfín, D. (Dariel); Rech, F. (Felix); et al. "The role of initial speed in projectile impacts into light granular media". Scientific Reports. 10 (1), 2020, 3207es_ES
dc.description.abstractProjectile impact into a light granular material composed of expanded polypropylene (EPP) particles is investigated systematically with various impact velocities. Experimentally, the trajectory of an intruder moving inside the granular material is monitored with a recently developed non-invasive microwave radar system. Numerically, discrete element simulations together with coarse-graining techniques are employed to address both dynamics of the intruder and response of the granular bed. Our experimental and numerical results of the intruder dynamics agree with each other quantitatively and are in congruent with existing phenomenological model on granular drag. Stepping further, we explore the ‘microscopic’ origin of granular drag through characterizing the response of granular bed, including density, velocity and kinetic stress fields at the mean-field level. In addition, we find that the dynamics of cavity collapse behind the intruder changes significantly when increasing the initial speed . Moreover, the kinetic pressure ahead of the intruder decays exponentially in the co-moving system of the intruder. Its scaling gives rise to a characteristic length scale, which is in the order of intruder size. This finding is in perfect agreement with the long-scale inertial dissipation type that we find in all cases.es_ES
dc.description.sponsorshipWe thank Ingo Rehberg, Simeon Völkel and Thorsten Pöschel for helpful discussions. K.H. and R.C.H. acknowledge the support of Bayerische Forschungsallianz through Grant No. BaylntAn-UBT-2018-72 for establishing the collaboration. Tis work is partly supported by the Deutsche Forschungsgemeinschaf through Grant No. HU1939/4-1. The Spanish MINECO (FIS2017-84631-P MINECO/AEI/FEDER, UE Projects), supported this work. D.H. acknowledges Asociación de Amigos de la Universidad de Navarra. Tis publication was funded by the German Research Foundation (DFG) and the University of Bayreuth in the funding programme Open Access Publishing.es_ES
dc.publisherSpringer Naturees_ES
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2017-84631-P/ES/FLUJO INTERMITENTE EN EL PASO POR ESTRECHAMIENTOS DE SISTEMAS DE MUCHAS PARTICULASes_ES
dc.subjectProjectile impactes_ES
dc.subjectLight granular materiales_ES
dc.subjectPolypropylene (EPP)es_ES
dc.titleThe role of initial speed in projectile impacts into light granular mediaes_ES
dc.description.noteThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
dadun.citation.publicationNameScientific Reportses_ES

Ficheros en este ítem:
Vista previa
2.8 MB
Adobe PDF

Estadísticas e impacto
0 citas en
0 citas en

Los ítems de Dadun están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.