Accession Number:
ADA141866
Title:
Identification of Strain-Softening Properties and Computational Predictions of Localized Fracture.
Descriptive Note:
Annual rept. Aug 82-Feb 84,
Corporate Author:
COLORADO UNIV AT BOULDER DEPT OF CIVIL ENVIRONMENTAL AND ARCHITECTURAL ENGINEERING
Personal Author(s):
Report Date:
1984-03-01
Pagination or Media Count:
191.0
Abstract:
The main objective of the present investigation is to evaluate strain-softening formulations for contained fracture in cementitious materials such as concrete and geo-materials. This report includes two principal developments a rational approach to identify softening properties due to tensile cracking and frictional slip from displacement controlled material testing, and a systematic verification of contained fracture computations from small-scale structural testing. To this end, a composite damage model is proposed to describe the degradation of strength and stiffness in the post-peak regime with the aid of a volume fraction formulation of localized damage within a finite element.
Descriptors:
- *Cements
- *Concrete
- *Fracture(Mechanics)
- *Softening
- *Strain(Mechanics)
- *Structures
- *Computations
- Mathematical prediction
- Finite element analysis
- Cracking(Fracturing)
- Crack propagation
- Tensile properties
- Modulus of elasticity
- Shear stresses
- Plastic deformation
- Displacement
- Degradation
- Rupture
- Mechanical properties
- Structural response
- Equations
- Test methods
Subject Categories:
- Ceramics, Refractories and Glass
- Numerical Mathematics
- Mechanics