ENGINEERING ANALYSIS INC.
HEXDAM represents the industrial version of the High Explosive Damage Assessment Model, now with the HEXDAM Man concept. Like its predecessors 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. Its primary application is siting analysis of explosive storage and 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 an industrial or military facility. A demonstration of this software is available.
HEXDAM has the capability to model an unlimited number of structures, each with different dimensions and structural properties, including elevated structures, and also an unlimited number of personnel. The Parametric Analysis of Single Structure (PASS) capability allows the user to determine the influence of various important independent variables on pressure and damage experienced by an individual structure within a facility.
As with its predecessors, HEXDAM utilizes widely accepted dynamic pressure and overpressure curves to predict the pressure level 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/person. HEXDAM produces output in the form of damage/injury tables, before-blast and after- blast displays, pressure and damage/injury contour plots, and damage/injury-versus-distance graphs, all in color. Advanced graphical features include three-dimensional graphics in the form of oblique projections, as well as two-dimensional horizontal and vertical cross sections for both pressure contour and damage/injury contour plots.
To ensure the software is usable by installation engineering, planning and safety offices, the hardware requirements for HEXDAM have been kept at a modest level. An IBM PC or compatible with a color monitor is sufficient to execute HEXDAM. Printing and/or plotting capabilities are included.
Recently, we entered into a working agreement with Trinity Consultants, leading to the development of HEXDAM 6.0 and 7.0 versions of our explosive safety software.
- Prediction of blast damages to 104 basic structure types, plus any user-defined structure types.
- Prediction of blast injury to 28 body components comprising the human body.
- Compatibility with Vulnerability Assessment of Structurally Damaging Impulses and Pressures (VASDIP) software.
- Prediction of blast damage/injury to both overpressure-sensitive and dynamic pressure-sensitive structures.
- Prediction of shielding* effects by each structure on surrounding structures based on the three-doublet advanced algorithm.
- Prediction of blast damage/injury resulting from secondary explosions triggered by the initial (primary) blast.
- Capacity to model an unlimited number of individual structures and/or body components within a facility.
- Capability to model elevated structures.
- Automatic or user-specified subdivision of structures.
- Generation of pressure and damage contours.
- Zoom feature for all graphical displays.
- Parametric Analysis of Single Structure (PASS)
* The user has the option to perform computations with or without shielding.
- IBM PC or compatible
- Hard disk drive
- Printer/plotter (for hardcopy)
- Color monitor and graphics card
- DOS 3.2 or later or Windows '95
- 640 K bytes system RAM
- Math co-processor
- Primary explosion
- location (including height)
- Individual structures
- dimensions (length, width, height)
- structure/body component type
- 104 basic inanimate types
- 19 human body component types
- user-defined types
- Before-Damage Display* - Provides 3-D oblique projection in color of all structures/body components being modeled.
- Damage/Injury Table - For each structure/body components provides pressure level and damage assessment.
- After-Blast Display* - Provides same 3-D oblique projection in color as Before- Damage but also indicates damage/injury level to each structure/body component.
- Damage/Injury vs Distance Graph - Provides color-coded plot of damage/injury levels to all structures/body components versus distance from primary explosion.
- Pressure Contours* - Provides 3-D oblique projection and 2-D horizontal and vertical cross sections of over-pressure and dynamic pressure contours of entire layout in color.
- Damage/Injury Contours* - Provides 3-D oblique projection and 2-D horizontal and vertical cross sections of damage/injury contour plots for any structure/body component in color.
- Parametric Analysis - Provides plots of variation of overpressure, dynamic pressure, and damage to a single structure as a function of the yield and the location of the burst.
*Zoom feature can be used with this output.
- Explosive Storage Siting
- Explosive Manufacturing Design
- Re-creation of Accidental Explosion
- Terrorist and Sabotage Threat Analysis
TYPES OF STRUCTURES COVERED
- Structural elements (7 different types)
- Composite structures (97 different types)
- underground structures
- transportation equipment
- naval vessels
- communications/electrical equipment
- industrial equipment
- gas and oil storage tanks
- User-defined structures
- Compatible with VASDIP
- Unlimited number of choices
TYPES OF BODY COMPONENTS COVERED
- Soft Tissue (4 types)
- G.I. System
- Bones (15 types)
- Cervical Vertebrae
- Thoracic Vertebrae
- Lumbar Vertebrae
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