Evaluation of mechanical properties of PBXW-113 explosive

Technical Report · Fri Mar 01 04:00:00 EST 1985

OSTI ID:6120273

Goudreau, G; Moen, W; Breithaupt, D

A preliminary screening of the mechanical properties of PBXW-113 explosive was performed at the request of the US Naval Surface Weapons Center, White Oak, Maryland. Unconfined uniaxial compression constant strain rate and cyclic tests were run at three intermediate strain rates and temperatures between -35/sup 0/C and 73/sup 0/C. Hopkinson pressure bar tests in tension and compression were performed at room temperature. A standard solid linear viscoelastic model available in most stress analysis codes was fit at one temperature and scaled to the others. A simple nonlinear viscous model available in the LLNL NIKE2D finite element code was also investigated. Further refinement of the model and more tests to identify it depend on the significance of the Navy stress analysis based on this simple model. The extremely compliant explosive PBXW-113 cannot be expected to carry significant loads in support of metal parts. In fact, under high acceleration loading, the explosive will pressure the lateral metal parts much as a fluid. More refined mechanical characterization should not be performed until stress analysis of the dynamic application using the sample viscous material model has been performed. Further studies could more carefully study the tensile failure properties and delamination from metal surfaces. If strength is vital, confined compression and other multiaxial studies could be performed as a function of rate and temperature. 5 references, 23 figures.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6120273
• Report Number(s): UCID-20358; ON: DE85008881
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
CHEMICAL EXPLOSIVES
COMPRESSION STRENGTH
CORRELATIONS
DATA
EVALUATION
EXPERIMENTAL DATA
EXPLOSIVES
FINITE ELEMENT METHOD
INFORMATION
LOW TEMPERATURE
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
NUMERICAL DATA
NUMERICAL SOLUTION
PLASTICITY
RECOMMENDATIONS
RELAXATION
STRAINS
STRESS ANALYSIS
STRESS RELAXATION
STRESSES
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
THERMAL STRESSES