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Deformation and failure of rectangular plates subjected to impulsive loadings

Yuan, Y; Tan, PJ; (2013) Deformation and failure of rectangular plates subjected to impulsive loadings. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING , 59 46 - 59. 10.1016/j.ijimpeng.2013.03.009. Green open access

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Abstract

The deformation and failure of fully-clamped rectangular plates subjected to zero-period, uniform-momentum impulsive loads are studied. Analytical predictions are given for the critical velocities corresponding to the transition between deformation modes. Three-dimensional (3D) numerical analyses were performed using the non-linear finite element (FE) code ABAQUS/Explicit® to predict the maximum central deflection and deformation mode of rectangular plates for different combinations of aspect ratios and impulses. Two competing mechanisms of bulk material failure, viz. by the nucleation, coalescence and growth of voids and by shear band localisation, are implemented in the FE model to simulate tensile tearing, resulting in progressive ductile fracture, at the support. The numerical results are validated against experimental data for square mild-steel and aluminium plates where they are found to be in good agreement. Deformation maps delineating the different deformation régimes for different combinations of blast impulse and aspect ratio are constructed for plates of equal mass. The effects of imposing a finite-period, as opposed to a zero-period, impulsive load upon the deformation mode and maximum deflection are also discussed.

Type: Article
Title: Deformation and failure of rectangular plates subjected to impulsive loadings
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ijimpeng.2013.03.009
Publisher version: http://dx.doi.org/10.1016/j.ijimpeng.2013.03.009
Additional information: �© 2013 Elsevier Ltd. All rights reserved. This work is licensed under a Creative Commons Attribution 3.0 Unported License.
Keywords: Impulsive loads, Damage, Ductile fracture, Rectangular plates, Deformation maps
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1362716
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