Publication detail

Elastic properties of isotropic discrete systems with skew contact normals

ELIÁŠ, J.

Original Title

Elastic properties of isotropic discrete systems with skew contact normals

Type

conference paper

Language

English

Original Abstract

The macroscopic elastic properties of discrete assemblies are fundamental characteristics of such systems. The contribution uses homogenization procedure based on equivalence of virtual work between the isotropic elastic continuum and the discrete system to develop analytical formulas for estimation of macroscopic elastic modulus and Poisson’s ratio. Such homogenization was recently used to derive formulas for discrete assemblies where (i) there is no vacant space between the discrete units, (ii) the orientation of contacts is uniformly distributed and (iii) the contact normals are parallel to contact vectors (directions connecting centers of discrete units). The third assumption is now removed, three dimensional systems with arbitrary relation between contact vectors and contact normals are studied here. It is shown that the limits of Poisson’s ratio of such system depends on the relation between contact normal and contact vector. The widest limits are however obtained when these two vectors are parallel. This means that arbitrary manipulations with discrete geometry cannot extend Poisson’s ratio of the system outside the known boundaries.

Keywords

Discrete model, homogenization, elasticity, Poisson’s ratio, normal vector

Authors

ELIÁŠ, J.

Released

3. 9. 2019

ISBN

978-84-949194-7-3

Book

XV International Conference on Computational Plasticity. Fundamentals and Applications (COMPLAS 2019)

Pages from

305

Pages to

313

Pages count

9

URL

BibTex

@inproceedings{BUT160661,
  author="Jan {Eliáš}",
  title="Elastic properties of isotropic discrete systems with skew contact normals",
  booktitle="XV International Conference on Computational Plasticity. Fundamentals and Applications (COMPLAS 2019)",
  year="2019",
  pages="305--313",
  isbn="978-84-949194-7-3",
  url="https://congress.cimne.com/complas2019/frontal/default.asp"
}