Object Oriented Implementation Of Reinforcement And Bond-Slip Finite Element Models For Nonlinear Analysis Of Reinforced Concrete Strucutres

Abstract

This paper deals with the development of a .nite element system to nonlinear
analysis of structures of heterogeneouns quasi-brittle material.In the present,it has been
implemented incremental-iterative methods to perform the nonlinear solution and some
constitutive models for concrete.Herein,it is presented the results for different implementations
of .nite element that include the reinforcement bar and bond at the concrete-steel
inter- face.The base of the system is a .nite element program that use the object-oriented
programming paradigms as technique of implementation.It was implemented the discrete,
embedded and axis-symmetric models for include reinforcement bar,and the bond-linkand
contact element for treatment of the bond-slip.For both,reinforcement and bond models,
it is possible to use .nite elements with several interpolation order.The numerical tests
performed are presented in order to validate the various models and the several elements
implemented.