Orthotropic Model of Concrete for Triaxial Stresses
Publication: Journal of Structural Engineering
Volume 112, Issue 1
Abstract
An orthotropic model to predict the ascending and descending parts of the stress‐strain curves of concrete subjected to biaxial or triaxial compressive stresses is presented. The stress‐induced orthotropic material properties are expressed in terms of six constants in the compliance matrix. The six material constants are expressed as functions of stress invariants at ultimate strength. The proposed orthotropic constitutive model depends on the knowledge of the three principal stresses at the maximum strength, which are obtained through the use of a strength criterion (which is sensitive to all the three stress invariants). For predicting the ascending and descending parts of the multiaxial stressstrain curves, the six orthotropic material constants in the compliance matrix are continuously changed with the help of a “fracturing index” parameter. The proposed constitutive model compares favorably with the available experimental data under multiaxial stresses.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 112 • Issue 1 • January 1986
Pages: 165 - 181
Copyright
Copyright © 1986 ASCE.
History
Published online: Jan 1, 1986
Published in print: Jan 1986
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