Simulation of Impact Induced Detonation of AIM-120. A Novel Approach
Abstract
A high fidelity computational campaign was initiated to predict impact-induced detonation. The intent of this numerical simulation campaign is to capture dynamics and the intervening physical processes leading to detonation of AIM-12O Advanced Medium Range Air-to-Air Missile (AMRAAM) warhead (WDU-33/B) resulting from fragment impact. A new and innovative first principle calculational tool called "Smoothed Particle Hydrodynamics" (SPH) is used. SPH is an unstructured free Lagrangian hydrodynamic tool developed earlier to 2,3 for predicting consequences of high strain rate reaction processes where materials experience extreme density gradients and undergo large plastic deformation. Examples of such impulsive interactions can be found in penetration and fracture/fragmentation mechanics problems. Well-controlled field tests are conducted to verify the detonability of the AIM- 120 class missile warheads to high-speed fragment impacts. Detailed temporally and spatially varying fragment impact calculations are performed to illustrate the response of the AIM-120 to the kinetic energy of the impinging fragments. The correlation between calculational predictions and the field tests data are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1998
- Accession Number
- ADA379702
Entities
People
- David F. Medina
- Eric T. Olson
- Firooz A. Allahdadi
- Scott R. Jeffers