Publication detail

Aggregate clustering and casting direction effects in lattice discrete particle model simulations

MARCON, M. PODROUŽEK, J. VOREL, J. WENDNER, R.

Original Title

Aggregate clustering and casting direction effects in lattice discrete particle model simulations

Type

conference paper

Language

English

Original Abstract

The paper aims at characterizing the influence of particle placement and clustering in lattice discrete particle model (LDPM) simulations of concrete on structural response. The presented spatial variability package for LDPM enables for the first time to influence the previously independent and random particle placement. The proposed scheme correlates the particle placement to an initial random or gradient-based fields in order to mimic some of the experimentally observed phenomena such as aggregate clustering or the effect of casting direction. The study is based on high-dimensional Monte Carlo (MC) LDPM simulations of three classical concrete tests in which the inherent variability and production process are represented by the proposed particle placement schemes with varying parameters. The material property fields are kept constant at this phase of the investigation in order to isolate and quantify the potential effect of the proposed particle placement schemes on structural response. This investigation is based on a comparison of stress and strain values at peak for different tests against the case of independent and random placement. The coefficients of variation of the above-mentioned outputs are also evaluated. This research aims at evaluating the importance influencing the particle placement according to experimentally measurable phenomena before initiating research on the spatial variability of material properties and the respective correlation structure. © 2019 Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering, UNCECOMP 2019. All rights reserved.

Keywords

Autocorrelation length; Concrete; Concrete Failure; Monte Carlo; Spatial Variability

Authors

MARCON, M.; PODROUŽEK, J.; VOREL, J.; WENDNER, R.

Released

24. 7. 2019

Publisher

ECCOMAS

Location

Porto, Portugal

ISBN

978-6-1882-8449-4

Book

Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering, UNCECOMP 2019

Pages from

1

Pages to

19

Pages count

19

URL

https://www.researchgate.net/publication/337383529_AGGREGATE_CLUSTERING_AND_CASTING_DIRECTION_EFFECTS_IN_LATTICE_DISCRETE_PARTICLE_MODEL_SIMULATIONS

BibTex

@inproceedings{BUT170531,
  author="Jan {Podroužek} and Marco {Marcon} and Jan {Vorel} and Roman {Wendner}",
  title="Aggregate clustering and casting direction effects in lattice discrete particle model simulations",
  booktitle="Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering, UNCECOMP 2019",
  year="2019",
  pages="1--19",
  publisher="ECCOMAS",
  address="Porto, Portugal",
  doi="10.7712/120219.6321.18788",
  isbn="978-6-1882-8449-4",
  url="https://www.researchgate.net/publication/337383529_AGGREGATE_CLUSTERING_AND_CASTING_DIRECTION_EFFECTS_IN_LATTICE_DISCRETE_PARTICLE_MODEL_SIMULATIONS"
}