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A platform for research: civil engineering, architecture and urbanism
Modeling of the Fracture Process in Prenotched Concrete Beams to Examine Size Effects
Abstract Concrete is a strain-softening material with a relatively low tensile strength. For laboratory specimens the resulting fracture process zone is large relative to the size of the K-dominated region calculated using linear elastic fracture mechanics. This violates a fundamental assumption of linear elastic fracture mechanics. In this paper, we analyze three-point beam specimens using a direct model of the process zone, and compare the results to experimental data. The results show the necessity of using such a model for laboratory specimens. Some difficulties with interpreting the experimental data are also noted. This is a report of work in progress.
Modeling of the Fracture Process in Prenotched Concrete Beams to Examine Size Effects
Abstract Concrete is a strain-softening material with a relatively low tensile strength. For laboratory specimens the resulting fracture process zone is large relative to the size of the K-dominated region calculated using linear elastic fracture mechanics. This violates a fundamental assumption of linear elastic fracture mechanics. In this paper, we analyze three-point beam specimens using a direct model of the process zone, and compare the results to experimental data. The results show the necessity of using such a model for laboratory specimens. Some difficulties with interpreting the experimental data are also noted. This is a report of work in progress.
Modeling of the Fracture Process in Prenotched Concrete Beams to Examine Size Effects
Refai, T. M. E. (author) / Swenson, D. V. (author)
Fracture of Concrete and Rock ; 303-310
1989-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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