Statistical crack mechanics

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5877040

Dienes, J K

An alternative to the use of plasticity theory to characterize the inelastic behavior of solids is to represent the flaws by statistical methods. We have taken such an approach to study fragmentation because it offers a number of advantages. Foremost among these is that, by considering the effects of flaws, it becomes possible to address the underlying physics directly. For example, we have been able to explain why rocks exhibit large strain-rate effects (a consequence of the finite growth rate of cracks), why a spherical explosive imbedded in oil shale produces a cavity with a nearly square section (opening of bedding cracks) and why propellants may detonate following low-speed impact (a consequence of frictional hot spots).

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5877040
• Report Number(s): LA-UR-83-1705; CONF-830679-1; ON: DE83014124
• Resource Relation: Conference: Colloque international du CNRS n/degree/351 failure criteria of structured media, Villard-de-Lans, France, 21 Jun 1983
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
EXPLOSIVE FRACTURING
CRACK PROPAGATION
OIL SHALES
DETONATIONS
FRACTURE MECHANICS
FRAGMENTATION
PROPELLANTS
ROCKS
STATISTICS
STRAIN RATE
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COMMINUTION
ENERGY SOURCES
FOSSIL FUELS
FRACTURING
FUELS
MATERIALS
MATHEMATICS
MECHANICS
040300* - Oil Shales & Tar Sands- Drilling
Fracturing & Mining