Nonlinear Blast Responses of Thin Shell Roof Over Long Span Structures

Abstract

This paper adopts both explicit and implicit finite element methods in a specialist package LS-DYNA to investigate the nonlinear, dynamic response of a long span shell roof structure when subjected to blast loading. Parametric studies have been carried out on blast loaded laminated glass plates with reference to experimental results obtained by European researchers. A case study that has been chosen is a light rail station in The Netherlands called The Erasmusline. Following the detonation of 15[Formula: see text]kg TNT charge, explicit analysis showed breakage surrounding the rigid supports along the edge beam where modal vibrations are restrained. An implicit analysis has confirmed the resonances in global eigen-frequencies where most blast damage is localized around the roof canopy hence producing cracking and potential glass detachment from the panels without full structural demolition. This insight from this study will inform structural engineers about the potential modes of failure and preventative strategies to minimize further secondary losses of life or assets from a terrorist attack.

Elasto-plastic analysis of foundations during emergency shutdown due to blast loading

“…Subsequent to this is the negative phase, where the pulse drops further before it recovers to zero. This is described by the modified Friedlander’s equation (Gantes and Pnevmatikos 2004; Wei and Dharani 2006; Karlos et al, 2015; Yuan et al, 2019; Rennie et al, 2021; Yang et al, 2022), which is dependent on the time t , and is given below,…”

Three-Dimensional Response of Multilayer FG-GPLRC Spherical Panels Under Blast Loading

“…In the recent years, there has been an increasing amount of literature on the dynamic and static analyses of isotropic, functionally graded and laminated composite shells and plates; see for example Refs. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] . Many studies have been focused on the free vibration behaviors, dynamic and thermoelastic analyses of different FG-GPLRC structures such as beams, plates, panels, cylindrical and conical shells in recent years [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] .…”