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Fracture Mechanics

by Z. P. Ba?ant,
L. Cedolin,
H. Mihashi,
G. Pijaudier-Cabot,
K. Rokugo,



Document Type: Proceeding Paper

Part of: Finite Element Analysis of Reinforced Concrete Structures II

Abstract:

This brief report, prepared by ACl 447 Subcommittee 2, reviews recent advances in finite element modeling of fracture and damage in concrete structures. The fundamentals of the fracture mechanics of concrete are briefly outlined. Then the basic finite element models developed for concrete fracture, including the discrete crack model with the stress-displacement law for bridging stresses and various types of distributed damage models, are described. The latter include the crack band model, and the nonlocal models, including the gradient models. The problems of spurious mesh sensitivity are discussed. From the practical viewpoint, the most important aspect of fracture and damage analysis is the modeling of size effect , both on the maximum load and the post-peak decline of the load displacement curve.

Subject Headings: Finite element method | Cracking | Sensitivity analysis | Failure analysis | Concrete | Stress analysis | Size effect

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