3D Finite Element Modeling of the Nonlinear Behavior of Confined Masonry Walls


KÖMÜRCÜ S.

International Conference on Applied Mathematics in Engineering (ICAME), Balıkesir, Turkey, 27 - 29 June 2018

  • Publication Type: Conference Paper / Summary Text
  • City: Balıkesir
  • Country: Turkey

Abstract

Confined masonry walls are generally preferred systems in structures such as buildings. Masonry is a composite material made of masonry blocks (brick, stone etc.) and mortar. Modeling is one of the efficient ways of analyzing a structure in the closest way to the truth. Numerical models can be used for designing masonry structures and verification of experiments on masonry structures. The finite element analysis (FEA) is extensively preferred numerical technique to model masonry structures. In this study, nonlinear structural behaviors of confined masonry walls are modeled and analyzed with using 3D finite element models. Macro modeling technique known as homogenization is used for modeling of the masonry part of the confined walls in ANSYS software. The interaction between the exterior frame of the structural system and the masonry wall are modeled with using contact and target elements. The analytical structure of using the contact and target elements are presented in detail [1]. The Willam-Warnke failure hypothesis, a suitable hypothesis for materials which have high compressive strength but having low tensile strength, is used to determine the fracture mechanisms of the confined masonry walls. The selected modeling technique, the material model and the fracture hypothesis form a combination to model the confined masonry walls numerically. The results obtained by the 3D finite element analysis on the confined masonry walls were found to be compatible with the experimental results in the literature. By using the finite element analyzes presented in this study, confined masonry walls can be successfully determined using the contact and target elements. It was seen that; confined masonry walls had generated dramatically more durable structure than masonry walls without confined frame systems.