Detail publikace

Exploring Induced Heterogeneity in Elastic Discrete Mechanical Models

RAISINGER, J. ZHANG, Q. BOLANDER, J. ELIÁŠ, J.

Originální název

Typ

článek ve sborníku mimo WoS a Scopus

Jazyk

angličtina

Originální abstrakt

Mesoscale discrete lattice models offer a direct way to incorporate the heterogeneous microstructure of concrete and other geomaterials efficiently, using vector-based constitutive laws with homogeneous material parameters. These models exhibit stress oscillations, which, if deemed non-physical, can be suppressed using methods such as auxiliary stress projection or deviatoric-volumetric decomposition to produce homogeneous elastic stress fields. This study examines the elastic behavior of the homogenized models with controlled heterogeneity introduced via spatial randomization of material parameters, with an emphasis on the replication of the oscillations in the non-homogenized discrete model. Simulations with varying degrees of spatial correlation under different macroscopic loading conditions reveal that the original stress oscillations are best replicated with spatially independent randomization. However, none of the techniques fully reproduce the original oscillations.

Klíčová slova

Discrete Model, Stress Oscillations, Concrete Mesoscale, Heterogeneity, Randomization, Elasticity

Autoři

RAISINGER, J.; ZHANG, Q.; BOLANDER, J.; ELIÁŠ, J.

Vydáno

25. 4. 2025

Nakladatel

IA-FraMCoS

Strany od

Strany do

Strany počet

URL

https://framcos.org/FraMCoS-12/Full-Papers/1193.pdf

Plný text v Digitální knihovně

http://hdl.handle.net/11012/250903

BibTex

@inproceedings{BUT197790,
  author="Jan {Raisinger} and Qiwei {Zhang} and John {Bolander} and Jan {Eliáš}",
  title="Exploring Induced Heterogeneity in Elastic Discrete Mechanical Models",
  year="2025",
  pages="1--7",
  publisher="IA-FraMCoS",
  doi="10.21012/FC12.1193",
  url="https://framcos.org/FraMCoS-12/Full-Papers/1193.pdf"
}