Detail publikace

Mitigating mesh dependence in stochastic finite element simulations of quasibrittle fracture

GORGOGIANNI, A. ELIÁŠ, J. LE, J.

Originální název

Mitigating mesh dependence in stochastic finite element simulations of quasibrittle fracture

Typ

článek ve sborníku mimo WoS a Scopus

Jazyk

angličtina

Originální abstrakt

Modeling quasibrittle materials as strain-softening continua leads to strain localization and the spurious mesh sensitivity of deterministic finite element (FE) simulatioys, an issue which has been addressed with the development of the localization limiters. This study focuses on the case of random material properties and aims to mitigate the mesh dependence of the predicted probabilistic structural response. Considering that each Gauss point of the finite element mesh represents a material element of finite size, the sampling distribution functions of the constitutive properties are related to the failure mechanism of the corresponding element. This consideration implies that the probability distributions of constitutive properties can vary with the element size. The proposed model is applied to FE simulations of a quasibrittle beam under the three-point bending (TPB) test and is shown to be efficient in mitigating mesh dependence of the output strength statistics.

Klíčová slova

-

Autoři

GORGOGIANNI, A.; ELIÁŠ, J.; LE, J.

Vydáno

2. 5. 2021

Strany od

1

Strany do

4

Strany počet

4

URL

https://congress.cimne.com/complas2021

BibTex

@inproceedings{BUT175489,
  author="Anna {Gorgogianni} and Jan {Eliáš} and Jia-Liang {Le}",
  title="Mitigating mesh dependence in stochastic finite element simulations of quasibrittle fracture",
  year="2021",
  pages="1--4",
  url="https://congress.cimne.com/complas2021"
}