@inproceedings{ff7b9b3c6915445a9c234b8b96f948d9,
title = "Nurbs-based isogeometric analysis for ballistic evaluation of titanium plates",
abstract = "The variation diminishing property of non-uniform rational B-splines (NURBS) makes NURBS-based isogeometric analysis attractive for applications involving travelling stress waves generated, for example, by impulsive loads. Over their finite elements counterparts, the advantage of NURBS basis functions is the higher continuity at every point of single-patch domains. This research investigates the applicability of isogeometric analysis for the ballistic performance of titanium alloys. Numerical results, in the framework of explicit time-integration, present the effect for k-refined trivariate NURBS. A comparison with the classical finite element analysis is also presented. Although the global continuity of NURBS results into a superior approximation of the travelling waves, it does not allow physical discontinuities in the displacement field. This prevents, for example, a projectile to penetrate a target plate. It is argued that the realistic physical response can be captured by adopting material models incorporating strain-rate-sensitive failure criteria.",
keywords = "High strain rate, Impact testing, Isogeometric analysis, NURBS, Titanium alloy",
author = "Mattia Montanari and Petros Siegkas and Antonio Pellegrino and Nik Petrinic",
year = "2016",
month = jun,
day = "10",
doi = "10.7712/100016.2394.9281",
language = "English",
series = "ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering",
publisher = "National Technical University of Athens",
pages = "8047--8056",
editor = "M. Papadrakakis and V. Plevris and G. Stefanou and V. Papadopoulos",
booktitle = "ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering",
address = "Greece",
note = "7th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS Congress 2016 ; Conference date: 05-06-2016 Through 10-06-2016",
}