Strain-Rate-Sensitive Constitutive Law for Concrete
Publication: Journal of Engineering Mechanics
Volume 125, Issue 12
Abstract
Concrete strength is highly sensitive to loading procedure, especially in the range of high strain rates. On the basis of experimental results, it is demonstrated that the full loading history must be included in a dynamic constitutive model, not just consideration of the current strain rate. The rate effect is mainly attributed to internal inertia forces during microdamage evolution. A strain-history-dependent constitutive model is proposed based on this retarded activation of microdamage. A simplified version allows identification of material parameters for practical application. It is shown how this dynamic approach fits into the general framework of continuum damage mechanics.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 125 • Issue 12 • December 1999
Pages: 1411 - 1420
History
Received: Jan 14, 1998
Published online: Dec 1, 1999
Published in print: Dec 1999
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