Blast: Characteristics, loading and computation-an overview

Abstract

This paper presents the state of the art for blast load characterization, loading pattern and its computation for the analysis of engineering structures. Various empirical relations available for computation of blast load in the form of pressure-time function are presented in concise form for easier understanding. Based on this study, functions are suggested for computing the pressure-time load history for a structural response. Explanation is presented for empirical, semiempirical and numerical methods for prediction of the blast load. Different numerical simulation techniques for modelling the blast load are presented. Various material models available in hydrocodes are also discussed for modelling advanced structural materials to be used in blast response mitigation.