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Mathematical modeling of materially nonlinear problems in structural analyses, Part II: Application in contemporary software

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Author(s): Bonić Zoran | Vacev Todor | Prolović Verka | Mijalković Marina | Dančević Petar

Journal: Facta Universitatis - series : Architecture and Civil Engineering
ISSN 0354-4605

Volume: 8;
Issue: 2;
Start page: 201;
Date: 2010;
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Keywords: material models | nonlinearity | Bilinear kinematic | Drucker Prager | experiment

ABSTRACT
The paper presents application of nonlinear material models in the software package Ansys. The development of the model theory is presented in the paper of the mathematical modeling of material nonlinear problems in structural analysis (part I - theoretical foundations), and here is described incremental-iterative procedure for solving problems of nonlinear material used by this package and an example of modeling of spread footing by using Bilinear-kinematics and Drucker-Prager mode was given. A comparative analysis of the results obtained by these modeling and experimental research of the author was made. Occurrence of the load level that corresponds to plastic deformation was noted, development of deformations with increasing load, as well as the distribution of dilatation in the footing was observed. Comparison of calculated and measured values of reinforcement dilatation shows their very good agreement.