A Novel Numerical Method for Reinforced Concrete (RC) Members Subjected to Blast Loading

Due to the inefficiency of codal provisions and increment of abnormal events the current study proposed a novel finite element (FE) simulation approach for reinforced concrete (RC) members subjected to blast loading. This is a displacement-based study of two RC slab (NRC-1 and 2) subjected to blast charge of 1 and 8 kg with a standoff distance 3 m. Three concrete models CSCM concrete, Winfrith Concrete and KCC model are chosen with Arbitrary Lagrangian Eulerian (ALE) and ConWep approach. To achieve appropriate results a finer mesh is provided at the middle of the slab and coarser mesh at exteriors. The obtained results display the significance of the air domain on application of blast pressure. Error obtained in ConWep modelling is higher than ALE modelling. For lower blast loadings CSCM concrete model is more suitable than other two concrete models. And similar keywords are used for two cases and the identical procedure can be used for other RC members like beam, columns and beam-column joints.