ENGINEERING ANALYSIS INC. 
VEXDAM SOFTWARE

SUMMARY

VEXDAM represents the vapor cloud explosion counterpart to the High Explosive Damage Assessment Model (HEXDAM), now with the VEXDAM Man concept. Like HEXDAM this software has been designed to allow the rapid evaluation of damage experienced by each structure within a facility as a result of a primary explosion, and any accompanying secondary explosions produced by vapor clouds at any elevation. Its primary application is safety analysis of petrochemical fuel storage and refining/manufacturing facilities. A number of technical papers have been published dealing with our work in this area. The code can also be used to evaluate terrorism and sabotage threats to a facility.  A demonstration of this software is available.

The program has the capability to model an unlimited number of structures, each with different dimensions and structural properties, including elevated structures. The Parametric Analysis of Single Structure (PASS) capability allows the user to determine the influence of various important independent variables on damage, overpressure, and impulse experienced by an individual structure within a facility.

VEXDAM utilizes recently developed dimensionless curves of overpressure and pulse duration versus range, based on the multi-energy method, to predict overpressure and impulse at each structure/person location. Structure shielding, based on the three-doublet advanced shielding algorithm, and secondary explosion effects are calculated, and damage/injury levels are determined for each structure. VEXDAM produces output in the form of damage/injury tables, before-blast and after-blast displays, overpressure, impulse, and damage/injury contour plots, and damage/injury-versus-distance graphs, all in color. Advanced graphics features include three-dimensional graphics in the form of oblique projections, as well as two-dimensional horizontal and vertical cross sections for overpressure, impulse, and damage/injury contour plots.

To ensure the software is usable by installation engineering, planning, and safety offices, the hardware requirements for VEXDAM have been kept at a modest level. An IBM PC or compatible with a color monitor, a dot matrix printer, and a color plotter (for hardcopy of screen graphics) is sufficient to execute VEXDAM.

Recently, we entered into a working agreement with Trinity Consultants, leading to the development of VEXDAM 6.0 and 7.0 versions of our explosive safety software.

CAPABILITIES

SYSTEM REQUIREMENTS

INPUTS

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APPLICATIONS

TYPES OF STRUCTURES COVERED

    1. aluminum
    2. asbestos
    3. brick
    4. concrete
    5. glass
    6. steel
    7. wood

TYPES OF BODY COMPONENTS COVERED


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