Constitutive model with strain softening

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The aim of this paper is to propose a simple yet realistic model for the mechanical behavior of geologic materials such as concrete and rock. The effect of structural changes in such materials is addressed and incorporated in the theory through a tensor form of a damage variable. It is shown that formation of damage is responsible for the softening in strength observed in experiments, for the degradation of the elastic shear modulus, and for induced anisotropy. A generalized plasticity model is incorporated for the so-called topical or continuum part of the behavior, whereas the damage part is represented by the so-called stress-relieved behavior. The parameters required to define the model are identified and determined from multiaxial testing of a concrete. The predictions are compared with observed behavior for a number of stress paths. The model shows very good agreement with the observed response.

Original languageEnglish (US)
Pages (from-to)794
Number of pages1
JournalMathematical and Computer Modelling
Volume10
Issue number10
StatePublished - 1988

Fingerprint

Strain Softening
Constitutive Model
Constitutive models
Damage
Concretes
Softening
Structural Change
Mechanical Behavior
Plasticity
Model
Tensors
Anisotropy
Modulus
Degradation
Continuum
Tensor
Elastic moduli
Rocks
Testing
Path

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computational Mathematics
  • Applied Mathematics
  • Control and Systems Engineering
  • Information Systems and Management
  • Computer Science (miscellaneous)

Cite this

Constitutive model with strain softening. / Frantziskonis, George N; Desai, C. S.

In: Mathematical and Computer Modelling, Vol. 10, No. 10, 1988, p. 794.

Research output: Contribution to journalArticle

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