Radioss Validation Study: Close-In Explosion on Concrete Slab
Altair EmployeeClose-In Explosions generate high-pressure shock waves that can result in significant structural damage, including spalling, cracking, or complete failure of the slab. The study of such phenomena is crucial for designing concrete structures that are resilient to blast events, especially in high-risk areas such as military facilities, nuclear plants, transportation hubs, or critical infrastructure.
The goal of this article is to share a validation study of Radioss for close-in explosions on concrete slabs. A reference paper has been identified with suffisant description of experimental facility and experimental test results. A Radioss model has been setup using HyperMesh v2025.0. Typical modeling methods have been applied without any tuning in order to assess Radioss level of predictibility with respect to the experimentl results.
The conclusion is overall positive with good predictibility of top and bottom surface craters.
This article includes:
- 1 ready-to-use Altair Radioss model of Close-In Explosion
- Altair HyperMesh version is V2025.0
- Altair Radioss version is V2025.0.
- The Unit System is in g, mm, ms
- Altair HyperWorks session files to allow fast analysis of the simulation
- A validation report with:
- Explanation of the reference test case
- Explanation of the validation strategy
- Description of the model setup
- Overview of the Results & comparison with test results