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Nonlinear fracture of concrete and ceramicsThe 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 ceramic/ceramic composite bend specimens.
Document ID
19890059940
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Kobayashi, Albert S.
(Washington Univ. Seattle, WA, United States)
Du, Jia-Ji
(Washington Univ. Seattle, WA, United States)
Hawkins, Niel M.
(Washington Univ. Seattle, WA, United States)
Bradt, Richard C.
(Washington, University Seattle, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Nonmetallic Materials
Accession Number
89A47311
Funding Number(s)
CONTRACT_GRANT: NAGW-199
CONTRACT_GRANT: NSF MSM-85-1053
Distribution Limits
Public
Copyright
Other

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