CONTINUUM DAMAGE MECHANICS CONSTITUTIVE MODEL OF CONCRETE UNDER COMPRESSION

in this paper, using MTS815.02 electro-hydraulic servo testing system, the complete process tests of concrete under compression with controlled strain velocity have been done. Based on irreversible thermodynamics and internal variable theory, a new CDM constitutive model of concrete under compression is established, in which the evolution of damage variable follows probability distribution. With the influence of irreversible deformation included,the model is in good agreement with experimental results.