Original scientific paper

https://doi.org/https://doi.org/10.32762/zr.27.1.9

Detection of a characteristic length in 2D orthotropic micropolar continuum

Damjan Jurković ; University of Rijeka, Faculty of Civil Engineering *
Gordan Jelenić ; University of Rijeka, Faculty of Civil Engineering
Sara Grbčić Erdelj ; University of Rijeka, Faculty of Civil Engineering
Dragan Ribarić ; University of Rijeka, Faculty of Civil Engineering
Laura Grbac ; University of Rijeka, Faculty of Civil Engineering
Edita Papa Dukić ; University of Rijeka, Faculty of Civil Engineering
Nina Čeh ; University of Rijeka, Faculty of Civil Engineering

* Corresponding author.

Abstract

With the aim of obtaining several micropolar engineering parameters, a numerical and experimental analysis of an artificially generated orthotropic microstructure is performed. Young’s moduli and Poisson's ratios of the microstructure are determined using homogenisation by asymptotic analysis. Four-point bending experiments are performed on the aluminium beams with the described microstructure. The same experiments are also performed numerically. Using the previously derived analytical expression for the strains in a plane orthotropic micropolar continuum, one characteristic length is determined. This length corresponds to the characteristic bending length in the isotropic continuum and is one of the four characteristic lengths of the planar orthotropic continuum. Experimental and numerical values agree well, despite the slight scatter of the experimental results. The methodology presented here can be used for further determination of bending lengths.

Keywords

orthotropic micropolar continuum; four-point bending experiments; characteristic bending length; homogenisation; numerical analysis

Hrčak ID:

324025

URI

https://hrcak.srce.hr/324025

Publication date:

18.12.2024.

Article data in other languages: croatian

Visits: 0 *