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Constitutive modeling of orthotropic nonlinear mechanical behavior of hardened 3D printed concrete by Thomas Mader; Magdalena Schreter-Fleischhacker; Olena Shkundalova; Matthias Neuner; Günter Hofstetter is a Engineering article available to read on EtoBox.

What is Constitutive modeling of orthotropic nonlinear mechanical behavior of hardened 3D printed concrete about?

## Abstract 3D printing of concrete is a promising construction technology, offering the potential to build geometrically complex structures without the use of cost-intensive formwork. The layer-wise deposit of filaments during the 3D printing process results in an intrinsic orthotropic mechanical behavior in the hardened state. Beyond that, the material behavior of 3D printed concrete (3DPC) is governed by a highly nonlinear behavior, characterized by irreversible deformations, strain hardening, strain softening and a degradation of the material stiffness. In this contribution, a new constitutive model for describing the orthotropic and highly nonlinear material behavior of 3DPC will be presented. It is formulated by the extension of a well-established isotropic damage plasticity model for concrete to orthotropic material behavior by linear mapping of the stress tensor into a fictitious isotropic configuration. The performance of the new model will be evaluated by finite element simulations of three-point bending tests of 3DPC samples, performed for different orientations of the loading direction relative to the printing direction and comparison with experimental results. In addit

Who reads Constitutive modeling of orthotropic nonlinear mechanical behavior of hardened 3D printed concrete?

Author

Thomas Mader; Magdalena Schreter-Fleischhacker; Olena Shkundalova; Matthias Neuner; Günter Hofstetter

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)