Uniaxial Constitutive Law for structural concrete members under monotonic and cyclic loads

In this paper, a new constitutive law for concrete is proposed to predict the non-linear behaviorof reinforced concrete members. the proposed model is intended to provide improvements on modelingthe non-linear hysteretic behavior of concrete structures in the finite element coding. the independentdamage and fracture parameters in compression and in tension have been introduced to the constitutivelaw of concrete degradation, due to increasing loads. in the sample of non-linear monotonic compressiveloading, the law has been derived from a basic mathematical model obtained previously. in addition, inthe sample of monotonic tension loading, the same law is adopted based on the latter basic mathematicalmodel. the main novelty of the proposed uniaxial constitutive law (ucl) lies in the fact that all therequired input data can be obtained through conventional monotonic and cyclic compression and tensiontests.