Abstract

Peridynamic theory has been shown to possess the capabilities of describing phenomena that theories based on partial differential equations are not capable of describing. These phenomena include nonlocal interactions and presence of singularities in system responses. To exploit the capabilities offered by peridynamics in the homogenization of heterogenous media, a nonlocal computational homogenization theory based on peridynamic correspondence model (nonordinary state based peridynamics) is proposed. To set the development of the theory on a rigorous mathematical framework and to ensure consistency with the nonlocal nature of the peridynamic theory, a nonlocal vector calculus was used in the analysis of the nonlocal homogenization theory. The proposed theory is a two-scale micro-macro homogenization strategy in which the constitutive relation at the macroscale is derived from explicit solution of a nonlocal volume constraint problem at the microscale. To justify the coupling between the two scales, nonlocal analogues of the stress and strain average theorems as well as the Hill-Mandel macrohomogeneity condition were derived. Validation of the proposed theory is achieved via numerical solution of Representative Volume Elements (RVE) from composite materials and comparing the results with those obtained by means of established methodologies.
Original languageEnglish
Number of pages27
JournalEngineering with Computers
DOIs
Publication statusPublished - 18 Jan 2022

Keywords

  • composites
  • homogenization
  • nonlocal calculus
  • nonlocal model
  • RVE
  • peridynamics

Fingerprint

Dive into the research topics of 'A computational homogenization framework for non-ordinary state-based peridynamics'. Together they form a unique fingerprint.

Cite this