Stress fields generated by kinetic energy projectile interaction with ceramic targets

Conference · Tue Jan 01 00:00:00 EST 1991

DOI:https://doi.org/10.1016/B978-0-444-89732-9.50219-3· OSTI ID:5663356

Burkett, M W; Rabern, D A

Two-dimensional axisymmetric calculations were performed with the Eulerian hydrocode MESA2D and the Lagrangian structural analysis code PRONTO2D. The calculated stress distributions were compared shortly after impact and found to be similar in magnitude and profile. For certain geometric configurations, the interaction of the kinetic energy penetrators with the ceramic targets produce high compressive principal stresses as well as, significant tensile principal stresses ahead of the projectile/ceramic interface. The principal tensile stresses fracture the ceramic ahead of the penetrator. The crack trajectories measured from a recovered ceramic target were compared with crack trajectory estimates based upon MESA2D principal stress states within the tile. The fracture process degrades the ceramic and allows the projectile to penetrate a fractured ceramic media. 12 refs., 3 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOD; Department of Defense, Washington, DC (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5663356
• Report Number(s): LA-UR-91-1693; CONF-9107105-23; ON: DE91013687
• Resource Relation: Conference: 1991 American Physical Society (APS) conference on shock compression of condensed matter, Williamsburg, VA (USA), 17-20 Jul 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CERAMICS
IMPACT TESTS
COMPUTERIZED SIMULATION
CRACK PROPAGATION
FRACTURE MECHANICS
PROJECTILES
STRESSES
MATERIALS TESTING
MECHANICAL TESTS
MECHANICS
SIMULATION
TESTING
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
450000 - Military Technology
Weaponry
& National Defense