Physics-based damage predictions for simulating testing and evaluation (T and E) experiments

Technical Report · Mon Mar 01 04:00:00 EST 1999

DOI:https://doi.org/10.2172/329556· OSTI ID:329556

Addessio, F L; Schraad, M W; Lewis, M W

This is the final report of a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). This report addresses the need to develop computational techniques and physics-based material models for simulating damage to weapons systems resulting from ballistic threats. Modern weapons systems, such as fighter aircraft, are becoming more dependent upon composite materials to reduce weight, to increase strength and stiffness, and to resist adverse conditions resulting from high temperatures and corrosion. Unfortunately, damaged components can have severe and detrimental effects, as evidenced by statistics from Desert Storm indicating that 75% of aircraft losses were attributable to fuel system vulnerability with hydrodynamic ram being the primary kill mechanism. Therefore, this project addresses damage predictions for composite systems that are subjected to ballistic threats involving hydrodynamic ram. A computational technique for simulating fluid-solid interaction phenomena and physics-based material models have been developed for this purpose.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 329556
• Report Number(s): LA-UR--99-484; ON: DE99002053
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
AIRCRAFT
COMPOSITE MATERIALS
DAMAGE
FLUID-STRUCTURE INTERACTIONS
IMPACT SHOCK
MATHEMATICAL MODELS
MILITARY EQUIPMENT