Explosion tests carried out at the DGA TN Tourris site
 

Package drop test: forces on the protected object and energy distribution
 

Hexahedral finite elements

Time-Resolved Study of Mechanical Systems under Extreme Stress:

Transient mechanical and thermal responses.

Extreme high-frequency stress: impact, shock waves.

Extreme loads with high stresses: contact forces, buckling, fracturing.

- Mechanical response to impact :

Phase Field Numerical Simulation Study

Tensile-shear transition for the failure of metal shell structures under explosion

- Warm-up and shock wave :

Methodology: Numerical Simulation - Molecular Dynamics - Short Time Response ~ 1 ns - Analytical Study of Wave Scattering

Collaborations : ILM univ. Lyon 1 - CETHIL INSA - Ioffe Institut St Petersburg - Universidad de Chile

- Fast dynamics for non-regular impacts: Isogeometric analysis for explicit fast dynamics

Methodology: Explicit integrator in time - LR B-spline shape functions of high order and continuity - Local refinement of LR B-spline mesh

Collaboration : Altair

- Temporal Integrator in Contact Dynamics

Methodology: Dynamic contact modelling - Asynchronous heterogeneous time integrator (multiscale in time) - Implicit/explicit co-simulation

Collaboration : Cetim - Michelin