Two-Degree-of-Freedom Blast Analysis Software

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BlasTDOF is an unsigned software. Thus, you will likely get a "Unknown Publisher" warning. This is a normal security feature of Microsoft Windows Operating Systems.
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About BlasTDOF


BlasTDOF transforms a realistic structural assembly, consisting of a continuous load-bearing element and its end connections, into an equivalent two springs in series system.

Numerical Method

The BlasTDOF numerical algorithm iteratively solves two equations-of-motion. This is done using the unconditionally stable constant average acceleration method.

Experimental Validation

BlasTDOF is undergoing continuous validation using results from dynamic shock tube testing. These are done at the University of Ottawa Shock Tube Test Facility.

Software Features

Effects of Realistic Connections

A step above single-degree-of-freedom (SDOF) analysis. Two-degree-of-freedom (TDOF) analysis allows you to include the effects of realistic end connections in blast analyses and design.

Blast Analyis and Design

Designing against a blast threat is iterative in nature. BlasTDOF's algorithm allows designers and researchers to easily and quickly modify design parameters and achieve specific performance requirements without the need to modify spreadsheets or code.

Pressure-Impulse Diagrams

Based on the specified structural member and end connections, pressure-impulse diagrams can be generated based on user defined damage criteria and threats.

Pressure-Time History Generation

Idealized pressure-time histories can be generated based on a triangular pressure-time curve or back-calculated from user-defined TNT equivalent explosive masses and stand-off distances, based on UFC 340-02. Alternatively, pressure-time histories can be input as a series of pressure-time data points defined by the user.

User-Friendly GUI

BlasTDOF's GUI allows users to easily enter and modify inputs, and perform analyses without the need for external applications. Results are presented directly to the user, which can then be easily exported to external applications.

Software Updates and License

BlasTDOF uses ClickOnce deployment technology , allowing it to automatically check for and install new versions of itself everytime you open it.
Best of all, BlasTDOF is free to use!