Extend MANPADS M&S Capabilities to Include Energetic Materials, Fragmentation Effects, and Wing Flutter Response
Abstract
The purpose of this effort is to create an analytical physics based aircraft-MANPADS model capability that includes impact, detonation, penetration, and wing flutter response. This work extends an existing body-on-body missile model to include energetic materials, fragmentation effects and wing flutter response due to dynamic air loads. The detonation of the high explosive within the missile, as well as the expansion of the surrounding fluids, was modeled in the Eulerian domain. The Jones-Wilkins-Lee (JWL) equation of state was used to model the explosive and the Gruneisen equation of state was used for the surrounding fluids. Linear Boundary elements based on inviscid, incompressible flow theory were coupled with the wing structure model to simulate air loads. A modular approach was taken to separate the Eulerian domain and the JWL equation model, from the model including the target. Separating the models allows the complex physics to be mapped onto the missile including the target, preserving the physics without the added costs. Evaluation was done of various element failure criteria to increase model robustness. Lastly, the model was used to evaluate the dynamic air loads and response of wing flutter. A physics based MANPADS model has been created which includes impact penetration detonation and fragmentation with drag.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 2005
- Accession Number
- ADA448623
Entities
People
- Brian D. Choules
- Monty A. Moshier
- Ronald L. Hinrichsen