O-116 TEMPER Software from v1.0 to v2.0

October 2007

Dr Pierre-François Péron (Warhead Technology), Emmanuel Lapébie and Gérard Baudin, CEG Gramat, France, Frédéric Peugeot, NAMSA, Luxembourg

TEMPER, an acronym for Toolbox for Engineering Models to Predict Explosive Reactions, is a "toolbox" of empirical and analytical models dedicated to ammunition safety. Experts can use it in order to aid in the prediction of the response of a munition to a mechanical or a thermal threat.

This software is made available by France/DGA/CEG to MSIAC nations experts as an open source, Object-Oriented Programming code in order to allow easy integration of custom models or enhancement of existing ones.

The objective of this project is to support the use of modelling in assessing munitions safety. The ultimate goal is to provide the community with a common tool that could become a reference in the S3 community if models and parameters exchanges between participants to this project work well.

A new version of TEMPER (v2.0) was released in October 2007. Compared to the previous version, TEMPER v2.0 contains the following new features:

Peugeots Shock-to-Detonation Transition (SDT) and Bow Shock-to-Detonation Transition (BSDT) models;
material database management through a dedicated interface;
a patch describing the Sympathetic Reaction stimulus and calculating the resulting fragment aggression, applicable to one-on-one warhead scenario;
a 1D lagrangian shock hydrocode (non-reactive in this version);
automatic fit of model parameters using experimental data;
ability to load and save simulations;
ability to run multiple models on the same simulation.

TEMPER v2.0 includes most of the analytical reactive models used by the community (8 models). The 1D lagrangian hydrocode is the first major software which has been added to the TEMPER toolbox and shows its capability to federate very different software on a unique platform.