Fracture Modeling of Concrete and Steel
Publication: Journal of Structural Engineering
Volume 121, Issue 7
Abstract
A new relationship between the fracture energy of concrete, the tensile strength, and the ultimate crack width has been developed by considering the postcracking strength or softening of concrete. Linear, power, and exponential mathematical models were used to describe the descending branch of the stress-strain diagram. A nonlinear finite-element model was developed, using smeared cracks for a layered model approach. This facilitated the representation of the reinforced concrete and composite (steel and concrete) members that were analyzed to verify the modeling of the materials and a range of structures. The predictions of the load-deflection behavior of a reinforced concrete slab and a continuous composite beam in the elastic and inelastic range incorporated the fracture energy model, and the correlation between the theoretical and experimental results was very good. In a final evaluation, the fracture criteria of concrete and metals have been compared, and excellent correlation has been established between the inelastic behavior of the two very different materials.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 121 • Issue 7 • July 1995
Pages: 1125 - 1133
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Jul 1, 1995
Published in print: Jul 1995
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