Effect of axial load on steel members under blast

At the present paper the response of structural steel components under explosive loading is numerically investigated. The examined members are open steel sections under various compression loads. First the importance of the material model and its capability of taking into account the effect of high strain-rates on the flow stress of the material is studied. A series of blast experiments carried out at McMaster University in Canada is compared with similar numerical simulations with the FEM software EUROPLEXUS utilizing different material models. It is shown that comprehensive modelling can adequately reproduce the experimental data. For quantifying the influence of compression on the dynamic response of steel columns, the support rotations were used as the critical parameter. The numerical results were compared with support rotation limits proposed by various blast design manuals. This comparison provided an insight to the level of conservatism included in the manuals and highlighted possible additions that would enhance the efficiency of their proposals.

KARLOS Vasileios;  SOLOMOS George;  LARCHER Martin; 

2015-12-14

ASRANet Ltd

JRC96541

978-0-9930121-2-9,   

http://www.fireandblast.co.uk/Content/files/CONFAB%202015%20Digital%20Proceedings.pdf,    https://publications.jrc.ec.europa.eu/repository/handle/JRC96541,