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PODROUŽEK, J. VOREL, J. CUSATIS, G. WENDNER, R.
Original Title
Imposed correlation between random field and discrete particle placement
Type
conference paper
Language
English
Original Abstract
In recent time it has be recognised that capturing the spatial variability of mechanical properties of heterogeneous materials is essential for a realistic estimation of uncertainties in probabilistic structural analyses. Several authors have successfully proposed random field concepts in combination with standard finite elements. Although some discrete element models such as the lattice discrete particle model (LDPM) already mimic microstructural effects associated with the heterogeneity of concrete very well, when compared to the continuum framework, there are still known reasons for introducing higher order spatial variability. One such key issue concerns the ability to capture the well-known statistical size effect associated with the physical meaning of an auto-correlation length in material property fields. The presented paper addresses the issue of imposing correlation between a particular structural discretisation (i.e. radius and placement of particles in a discrete framework) and the realization of a random field for spatially variable material properties. Authors present here a novel method for imposing correlation between the discrete particle placement and a governing random field and illustrate the important implications towards enhanced realism in the reliability based assessment of concrete fastening systems.
Keywords
lattice discrete particle model, random field, spatial variability, probabilistic assessment, imposed correlation, concrete structures
Authors
PODROUŽEK, J.; VOREL, J.; CUSATIS, G.; WENDNER, R.
Released
17. 12. 2016
Publisher
Springer International Publishing
Location
Ghent, Belgium
ISBN
978-3-319-47885-2
Book
14th International Probabilistic Workshop
Pages from
245
Pages to
252
Pages count
8
BibTex
@inproceedings{BUT131080, author="Jan {Podroužek} and Jan {Vorel} and Gianluca {Cusatis} and Roman {Wendner}", title="Imposed correlation between random field and discrete particle placement", booktitle="14th International Probabilistic Workshop", year="2016", pages="245--252", publisher="Springer International Publishing", address="Ghent, Belgium", doi="10.1007/978-3-319-47886-9\{_}17", isbn="978-3-319-47885-2" }