A new method for CDP input parameter identification of the ABAQUS software guaranteeing uniqueness and precision

Abstract

Purpose The purpose of this paper is to present a new method for determining the input parameters of the concrete damaged plasticity (CDP) model of ABAQUS standard software. The existing available methods in the literatures are case sensitive, i.e., they give different input parameters of CDP for a unique concrete class used in different finite element (FE) simulation of concrete structures. In this study, the authors attempt to introduce a new approach for the identification of the input parameters of the CDP model, which guarantees the uniqueness and precision of the model. In other words, by this method, the input parameters obtained for a specific concrete class with a unique characteristic strength can be used for FE simulation of the different concrete structures which were constructed by this concrete without the need to additional modifications raised from any new application. Design/methodology/approach For the input parameter identification of the CDP model, different standard tests of plain concrete are simulated by the ABAQUS standard software. These test simulations are performed for various set of input parameters. In the end, those set of input parameters which represents the best curve fitting with the experimental results is chosen as the optimum parameters. Findings By comparison of the FE simulation results obtained from the ABAQUS for two different concrete structures using the proposed input parameters for the CDP model with the experimental results, it was shown that the presented method for determining those parameters can guarantee the uniqueness and precision of the CDP model in simulation. Originality/value The method described for determining the input parameters of the CDP model of the ABAQUS standard software has not been previously presented.

Performance of Composite Shear Walls Subjected to In-plane Cyclic Loading - A Numerical Parametric Study

“…The Concrete Damaged Plasticity (CDP) model is implemented for the simulation of the concrete behavior [25,26]. The plasticity input parameters, compressive, and tensile behavior input parameters used in the CDP model are outlined in Tables 1-3, respectively [27][28][29][30][31]. The plastic parameters in Table 1 are the optimized parameters and they are selected based on the previous studies of the author [16,27,28].…”

“…The plasticity input parameters, compressive, and tensile behavior input parameters used in the CDP model are outlined in Tables 1-3, respectively [27][28][29][30][31]. The plastic parameters in Table 1 are the optimized parameters and they are selected based on the previous studies of the author [16,27,28]. Several tries for dilation angle was selected between 5° to 55° and the optimized value was obtained as 30°.…”

Modeling and Analysis of the Effect of Holes in Reinforced Concrete Column Structures

“…Five plasticity parameters need to be inputted on the ABAQUS software, that is the ratio of biaxial/uniaxial compressive strength (boco), flow potential eccentricity (), deviatoric stress invariant ratio (Kc), viscosity parameter (µ), and dilation angle (). Parameters µ and  have a certain value according to the characteristics of the concrete used, and its adjustment or calibration is essential (Birtel and Mark (2006), Cohen (2018), Genikomsou (2015), Genikomsou and Polak (2016), Hafezolghorani et al (2017), Labibzadeh et al (2017)). Meanwhile, the other parameters, values were adjusted by ABAQUS.…”

“…determined the relationship of compression strain stress and tensile in inelastic conditions with the appropriate concrete damage plasticity. CDP is one of the constitutive models used to define the complex behaviour of concrete material during degradation, pressures and pulls(Genikomsou & Polak (2016),Grassl & Jirásek (2006),Hafezolghorani et al (2017),Labibzadeh et al (2017)). CDP parameters in the ABAQUS program consist of damage and plasticity parameters.…”

Effect of Stress Path, Size and Shape on the Optimum Parameters of a Brittle-Ductile Concrete Model

“…Labibzadeh (2015) and Labibzadeh and Elahifar (2015) have employed the CDP model for the numerical simulation of the strengthened RC slabs with CFRPs and calibrated the input parameters using some different tests such as biaxial compression test, three-point bending concrete beam test and four-point bending reinforced concrete beam test. Labibzadeh et al (2017a) presented a new method for finding the optimum values for input parameters of the CDP model which can guarantee the uniqueness and the precise of the obtained results. They suggested the use of the results of the different standard tests of the concrete for the calibrating the input parameters of the CDP model.…”