Simplified Blast Simulation Procedure For
Hazard Mitigation Planning
Author(s)
T. Tadepalli & C. L. Mullen
Abstract
A simplified procedure for blast simulation is presented for the purpose of
performing building vulnerability assessment in a framework consistent with
natural hazards mitigation planning studies. A computational tool, FESIM, has
been developed to perform simplified building damage simulation using a GUI
driven set of algorithms. FESIM permits estimation of the dynamic response of
SDOF and MDOF systems to arbitrary forcing functions, and includes a
beam-column damage element for computation of nonlinear response of portal
frames including laminated composite beams with varying material and laminate
layout sequences. The procedure begins with the formation of stiffness and mass
matrices for computation of natural modes and frequencies of the portal frames.
Blast loading-time histories are then generated and SDOF elasto-plastic response
is computed to determine P-I curves. Geospatial analysis is used to display blast
pressure contours for scenario events affecting a complex of buildings. The
damage to buildings and debris created are estimated using the P-I curves
developed for the class of buildings in the complex, and losses are computed
based on the occupancy, structural value and content value. The procedure is
demonstrated for buildings located at the University of Mississippi being studied
as part of a federally sponsored Disaster Resistant University project.
Keywords: FE Simulation, blast loading, GIS, mitigation planning.
1 Introduction
The design of military structures for blast loads follows well laid design
guidelines. The same is not the case when it comes to designing civilian
structures for blast resistance. The technology transfer from military to civilian
spheres of design has yet not been fully realized. Most of the design and analysis
tools are not accessible to civil planners and designers, whose primary focus is
Keywords
FE Simulation, blast loading, GIS, mitigation planning.
Related Book
Other papers in this volume
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