SYMPOSIA PAPER Published: 01 January 1988

Nonlinear Fracture of Concrete and Ceramics


The nonlinear fracture process zones in an impacted unnotched concrete bend specimen, a prenotched ceramic bend specimen, and an unnotched ceramic/ceramic composite bend specimen were estimated through hybrid experimental numerical analysis. Aggregate bridging in concrete, particulate bridging in ceramics, and fiber bridging in ceramic/ceramic composite are modeled by Barenblatt-type cohesive zones which are incorporated into the finite-element models of the bend specimens. Both generation and propagation analyses are used to estimate the distribution of crack closure stresses in the nonlinear fracture process zones. The finite-element models are then used to simulate fracture tests consisting of rapid crack propagation in an impacted concrete bend specimen, and stable crack growth and strain softening in a ceramic and a ceramic/ceramic composite bend specimens.

Author Information

Kobayashi, AS
University of Washington, Seattle, WA
Du, J-J
University of Washington, Seattle, WA
Hawkins, NM
University of Washington, Seattle, WA
Bradt, RC
University of Washington, Seattle, WA
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Developed by Committee: E08
Pages: 457–471
DOI: 10.1520/STP26789S
ISBN-EB: 978-0-8031-5063-8
ISBN-13: 978-0-8031-1174-5