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

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.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Numerical Mathematics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE