REINFORCED CONCRETE TREATMENT AS COMPOSITE MATERIAL

S. OLLER; E. OÑATE; J. MIQUEL

Conferencia; 13 International Conference - Structural Mechanics in Reactor Technology; 1995

In this paper is presented the general mixing theory applied to thenumerical simulation of multiphase composite material behaviour as reinforcedconcrete materials. This theory is based on the mixture of the basic substancesof the composite and allow evaluate the inter-dependence behaviour between thedifferent compounding constitutive models. If it would be necessary consider the initial anisotropy of each compounding, could be done by mean of the mapped isotropic plastic formulation. It approach is a generalization of the classic isotropic plasticity theory to be applied to orthotropic or anisotropic materials as reinforced concrete. Assume the existence of a stress and strain real anisotropic spaces, and the respective fictitious isotropic spaces where a mapped fictitious problem is solved. Those spaces are relating by means two fourth order transformation tensor. These both formulation joined establishing a powerful work-tool for the treatment of bulk-fiber composite materials. The induced anisotropy behaviour is take into account by each compounding constitutive formulation.