Imperial College London
Portrait Picture

DrLukeLouca

Faculty of Engineering, Department of Civil and Environmental Engineering

Reader
 
 
 
//

Contact

 

+44 (0)20 7594 6039l.a.louca

 
 
//

Location

 

438Skempton BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Mehreganian:2018:10.1016/j.ijmecsci.2018.09.017,
author = {Mehreganian, N and Soleiman, Fallah A and Louca, L},
doi = {10.1016/j.ijmecsci.2018.09.017},
journal = {International Journal of Mechanical Sciences},
pages = {578--595},
title = {Inelastic dynamic response of square membranes subjected to localised blast loading},
url = {http://dx.doi.org/10.1016/j.ijmecsci.2018.09.017},
volume = {148},
year = {2018}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Extensive shock and highly localised blast waves generated by detonation of near field explosives (such as improvised explosive devices (IEDs)) are catastrophic to structures and humans, resulting in injury or death, progressive damage, or perforation through the structure and collapse. Mitigating the effects of such waves is paramount in various aspects of design engineering. A theoretical model is presented here to predict the large inelastic deformation of ductile thin square membranes induced by a generic, short pulse pressure load, comprising a piecewise function of spatial and temporal parts. Using the constitutive framework of limit analysis and incorporating the influence of finite displacements, two patterns of kinematically admissible, time dependent velocity profiles were investigated. These patterns included stationery and moving plastic hinges. The results were investigated in two cases: once with the interaction between bending moment and membrane forces retained in the analyses, and then when the response was solely governed by membrane forces.For blast loads of high magnitude, the pressure was replaced by an impulsive velocity and the results were expressed in terms of dimensionless form of initial kinetic energy. The effects of boundary conditions and visco-plasticity have also been investigated. The theoretical results corroborated well with various experimental results in the literature, on ductile metallic plates such as high strength ARMOX steel and mild steel.
AU  - Mehreganian,N
AU  - Soleiman,Fallah A
AU  - Louca,L
DO  - 10.1016/j.ijmecsci.2018.09.017
EP  - 595
PY  - 2018///
SN  - 0020-7403
SP  - 578
TI  - Inelastic dynamic response of square membranes subjected to localised blast loading
T2  - International Journal of Mechanical Sciences
UR  - http://dx.doi.org/10.1016/j.ijmecsci.2018.09.017
UR  - http://hdl.handle.net/10044/1/63904
VL  - 148
ER  -
Download