Detail publikace

Discrete modeling of elastic heterogeneous media

ZHANG, Q. ELIÁŠ, J. NAGAI, K. BOLANDER, J.

Originální název

Discrete modeling of elastic heterogeneous media

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Discrete models provide advantages in simulating fracture in quasi -brittle materials due, in part, to their simplicity in representing cracking and other forms of displacement discontinuity. However, the stress analyses that form the basis for fracture simulation are complicated by difficulties in modeling the Poisson effect and other aspects of elastic behavior. The capabilities of Voronoi-cell lattice models, which are a form of particle -based lattice model, for elastic stress analysis are evaluated. It is found that the conventional means for representing the Poisson effect in particle -based lattice models result in spatially correlated stress oscillations that, at first glance, mimic the effects of material heterogeneity. The correlation length is dependent on discretization size. Alternatively, material heterogeneity can be introduced into elastically uniform lattice models via random assignments of material properties, independent of mesh size and geometry.

Klíčová slova

Lattice models; Elastic uniformity; Heterogeneity; Stress analysis; Concrete

Autoři

ZHANG, Q.; ELIÁŠ, J.; NAGAI, K.; BOLANDER, J.

Vydáno

19. 4. 2024

ISSN

0093-6413

Periodikum

MECHANICS RESEARCH COMMUNICATIONS

Ročník

137

Číslo

104277

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

8

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S0093641324000375

BibTex

@article{BUT189576,
  author="Qiwei {Zhang} and Jan {Eliáš} and Kohei {Nagai} and John {Bolander}",
  title="Discrete modeling of elastic heterogeneous media",
  journal="MECHANICS RESEARCH COMMUNICATIONS",
  year="2024",
  volume="137",
  number="104277",
  pages="8",
  doi="10.1016/j.mechrescom.2024.104277",
  issn="0093-6413",
  url="https://www.sciencedirect.com/science/article/pii/S0093641324000375"
}