Design and development of a finite element analysis based model for impact analysis of blasts incorporating material properties

Herein, we present the design and development of a 'Finite Element Analysis (FEA)' based model incorporating temperature dependent material properties for impact analysis of blasts on underwater vehicles. Our primary idea is the incorporation of temperature dependent material properties in explosion studies for the design and development of new age shield engineering designs, especially focused towards the applications relevant to the underwater vehicles (e.g. autonomous underwater vehicles, submarines, submersibles, and torpedoes, etc.). We present extensive results that are key towards bench marking. Furthermore, we show and analyse the effect of explosion on square plates of different materials and distribution of stresses, strains and displacements after explosion/impact, etc., are examined in-detail. Our proposed FEA based model is governed by the basic numerical analysis, finite element analysis and thermal/material science. We implement our model in ABAQUS*TM and Matlab**TM software solution systems and develop subroutines to ensure seamless integration. In our model the focus is on large deformation finite element analysis, and we use the Jones-Wilkins-Lee (JWL) equation of state, Johnson Cook parameters, along with temperature dependent material properties. Presented results examine the role of explosion at various heights in the z axis direction on plates of different materials and the '2, 4, 6-Tri Nitro Toluene (TNT)' is used as a representative explosive material. Finally, based upon the results and their analyses suitable design guidelines related to material selection and applications are derived.