ENGINEERING ANALYSIS INC. 
VASDIP 3.0 SOFTWARE

SUMMARY

According to current single-degree of freedom models, blast damage/injury can be represented by Pressure-Impulse (P-I) diagrams. We are pleased to announce the availability of the third version of the Vulnerability Assessment of Structurally Damaging Impulses and Pressures (VASDIP 3.0) model for explosive safety/physical security analysis, based on the most recently developed P-I diagrams. By means of VASDIP 3.0 the user can specify the detailed properties (including boundary conditions) of 24 different basic structural components and 19 different human body components.

Based on a combination of test data and single-degree of freedom analysis, VASDIP 3.0 generates a color-coded P-I diagram for each structural/human component, and calculates the resulting damage/injury level for given values of pressure and impulse. The software also computes the corresponding vulnerability parameters for use with the EAI HEXDAM 5.2and VEXDAM 5.2 software. This capability greatly increases the utility of HEXDAM 5.2 and VEXDAM 5.2, because by means of VASDIP 3.0 the user can compute changes in vulnerability as a function of individual structural/human properties involving either the HEXDAM Man or the VEXDAM Man. VASDIP 3.0 should prove of considerable value in cost/risk analysis.

Recently, we entered into a working agreement with Trinity Consultants, leading to the development of more advanced versions of our explosive safety software.

NEW FEATURES

INPUTS

The parameters which can be taken into account with VASDIP 3.0 vary with each structural/human component, but they are quite comprehensive. For example, for a reinforced concrete one-way slab the following nine parameters can be specified:

  1. Slab span
  2. Cross-sectional area
  3. Section width (typically rebar spacing)
  4. Tensile steel area
  5. Depth of tensile reinforcement
  6. Yield strength of reinforcement
  7. Compressive strength of concrete
  8. Boundary conditions (simple-simple or fixed-fixed)
  9. Weight density of section
By comparison, for the thoracic vertebrae of the human body, the following four parameters can be specified:
  1. atmospheric pressure
  2. body weight
  3. body height
  4. height-to-width ratio
In addition to the parameters noted, if vulnerability parameters are to be calculated, the user enters the reference yield.

OUTPUTS

VASDIP 3.0 generates three distinct outputs. The first is a color-coded Pressure-Impulse diagram which provides the user with a clear picture of the three zones of structural/human response:

The second output consists of specific vulnerability parameters, These parameters are used for characterizing a structure/human body with the HEXDAM 5.2 and VEXDAM 5.2 software.

The third output consists of the damage/injury level resulting from a given pressure and impulse based on the P-I diagrams.

SYSTEM REQUIREMENTS
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