Computational model for armor penetration. Annual report No. 2, October 1979-October 1980
Results are reported from the second year of a three-year BRL/AMMRC/SRI program to develop a computational capability for predicting the behind-the-armor fragment environment for spaced armor attacked by long-rod penetrators. The baseline materials chosen were rolled homogenous steel armor (RHA) and depleted uranium (DU) for the penetrator. Phenomenological studies involving both quarter and full-scale ballistics tests at velocities up to 1.5 km/s and obliquities from 0 to 70 clearly revealed shear banding to be the principal phenomenon controlling both penetrator erosion and armor failure. A detailed, phenomenological scenario for oblique armor penetration is given . Contained fragmenting cylinder (CFC) experiments were performed to characterize the resistance of RHA to shear banding; a significant anisotropy was observed. The SHEAR3 computational model for shear banding was refined and calibrated with respect to previously obtained data from CFC experiments using 4340 steel (Rc40).
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- OSTI ID:
- 7002592
- Report Number(s):
- AD-A-190235/2/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500* -- Engineering-- Materials Testing
ACTINIDES
ALLOYS
ANISOTROPY
ARMOR
COMPUTERIZED SIMULATION
DEPLETED URANIUM
DOCUMENT TYPES
ELEMENTS
EROSION
FRAGMENTATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MATHEMATICAL MODELS
METALS
PENETRATORS
PROGRESS REPORT
SCALE MODELS
SIMULATION
STEELS
STRUCTURAL MODELS
TESTING
URANIUM