Dynamic Fracture of Concrete and Other Heterogeneous Materials.

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Abstract:

Damage in concrete is characterized by microcracking andor the development of large cracks. In this study, the physics underlying the relationships between microcracks and damage and the implications of these factors on the mathematical modeling of engineering structures have been studied. Particular issues which have been emphasized are 1 the size effects on brittle failure, 2 shear fracture and 3 the mathematical and phenomenological consistency of strain-softening models with damage processes in concrete. The effect of the size of a concrete structure on the nominal stress at brittle failure is studied by dimension analysis and illustrative examples.

Author(s):
Bazant, Zdenek P. ; Belytschko, Ted
Author Organization(s):
NORTHWESTERN UNIV EVANSTON IL DEPT OF CIVIL ENGINEERING
Descriptive Note:
Final rept. 1 Nov 82-30 Oct 85,
Pagination:
0156

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFOSR-TR-87-0163
Contract/Grant Number(s):
AFOSR-83-0009
Task Number(s):
C2
Project Number(s):
2307
Monitor Series:
TR-87-0163
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*CONCRETE, *FRACTURE(MECHANICS), *HETEROGENEITY, SHEAR PROPERTIES, MATHEMATICAL MODELS, DAMAGE, DYNAMICS, CRACKS, STRUCTURES, BRITTLENESS, ENGINEERING, PHYSICS, FAILURE(MECHANICS), MICROCRACKING
Field(s)/Group(s):
Ceramics, Refractories and Glass, Mechanics
Keyword(s):
WUAFOSR2307C2, PE61102F
Report Date:
1986 Jan 28