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Pressure-impulse Diagrams for Elastoplastic Beams Subjected to Pulse-pressure Loading

Yuan, Y; Zhu, L; Bai, X; Yu, TX; Li, Y; Tan, PJ; (2018) Pressure-impulse Diagrams for Elastoplastic Beams Subjected to Pulse-pressure Loading. International Journal of Solids and Structures , 160 pp. 148-157. 10.1016/j.ijsolstr.2018.10.021.

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Abstract

Pressure–impulse (or p - I) diagrams are developed for fully-clamped elastic-plastic beams subjected to pulse-pressure loading with varying degree of negative phase. Unlike traditional (p - I) diagrams, the loading parameter space are instead divided into re´gimes, corresponding to the three modes of deformation (I, II and III) observed in blast experiments. The effects of pulse shape, beam aspect ratio and negative phase loading on the isodamage curves that delineate the different régimes are investigated. In addition, it is further demonstrated that contour lines of structural performance (maximum deflection, total work done, partitioned energy and saturated) can also be incorporated into the non-dimensionalised pressure-impulse space to provide further information for the design, and assessment, of elastic-plastic beams to blast loading.

Type: Article
Title: Pressure-impulse Diagrams for Elastoplastic Beams Subjected to Pulse-pressure Loading
DOI: 10.1016/j.ijsolstr.2018.10.021
Publisher version: https://doi.org/10.1016/j.ijsolstr.2018.10.021
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Pressure-impulse diagram, Deformation régimes, Negative phase, Saturated impulse
UCL classification: 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/10059933
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