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Constitutive Model for Short-Time Loading of Concrete

Ottosen, Niels Saabye LU (1979) In Journal of the Engineering Mechanics Division ASCE 105. p.127-141
Abstract
A constitutive model based on nonlinear elasticity is proposed, where the secant values of Young’s modulus and Poisson’s ratio are changed appropriately. This alteration is obtained through the use of a nonlinearity index that relates the actual stress state to the failure surface. The model simulates the strain hardening before failure, the failure itself and the strain softening in the post-failure region. The dilation of the concrete and the influence of all three stress invariants are considered. All stress states including those where there are tensile stresses can be dealt with; however, the model is calibrated using experimental data obtained by a uniaxial compressive and tensile test only. The model predictions are demonstrated to... (More)
A constitutive model based on nonlinear elasticity is proposed, where the secant values of Young’s modulus and Poisson’s ratio are changed appropriately. This alteration is obtained through the use of a nonlinearity index that relates the actual stress state to the failure surface. The model simulates the strain hardening before failure, the failure itself and the strain softening in the post-failure region. The dilation of the concrete and the influence of all three stress invariants are considered. All stress states including those where there are tensile stresses can be dealt with; however, the model is calibrated using experimental data obtained by a uniaxial compressive and tensile test only. The model predictions are demonstrated to be in good agreement with experimental results involving a wide range of stress states and different types of concrete. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Combined stress, Concrete, Deformation, Dilatancy, Softening, Strain hardening, Stress strain relations
in
Journal of the Engineering Mechanics Division ASCE
volume
105
pages
127 - 141
external identifiers
  • Scopus:0018432579
language
English
LU publication?
no
id
d7fe59ed-6679-4f13-b6b3-8bc2992b4cc4 (old id 1370245)
date added to LUP
2010-08-24 14:35:56
date last changed
2016-06-29 15:49:24
@misc{d7fe59ed-6679-4f13-b6b3-8bc2992b4cc4,
  abstract     = {A constitutive model based on nonlinear elasticity is proposed, where the secant values of Young’s modulus and Poisson’s ratio are changed appropriately. This alteration is obtained through the use of a nonlinearity index that relates the actual stress state to the failure surface. The model simulates the strain hardening before failure, the failure itself and the strain softening in the post-failure region. The dilation of the concrete and the influence of all three stress invariants are considered. All stress states including those where there are tensile stresses can be dealt with; however, the model is calibrated using experimental data obtained by a uniaxial compressive and tensile test only. The model predictions are demonstrated to be in good agreement with experimental results involving a wide range of stress states and different types of concrete.},
  author       = {Ottosen, Niels Saabye},
  keyword      = {Combined stress,Concrete,Deformation,Dilatancy,Softening,Strain hardening,Stress strain relations},
  language     = {eng},
  pages        = {127--141},
  series       = {Journal of the Engineering Mechanics Division ASCE},
  title        = {Constitutive Model for Short-Time Loading of Concrete},
  volume       = {105},
  year         = {1979},
}