Numerical modeling thermo-hygro-mechanical coupling of cross-ply laminate composites using a nonlocal discrete approach

Donglai Liu, Hailong Chen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Laminate composites are widely used in various industrial applications and are frequently subject to extreme temperature and moisture environment. This paper presents numerical modeling thermo-hygro-mechanical coupling of cross-ply laminate composites using a nonlocal discrete approach formulated based on the local continuum mechanics theory. In the developed model, the material domain is modeled as an assembly of regularly packed material particles whose interaction with neighboring material particles via bonds is nonlocal. Bond parameters are derived based on equivalency of energy and diffusing material transfer rate between the discrete descriptions and their continuum counterparts. The orthotropy of material properties is modeled using rotation of discretization lattice rather than the coordinate transformation that used in the local continuum mechanics theory. The interface and its effect on the material response are investigated by assigning different parameters to bond straddling different material phases. Numerical verification using single and four-ply laminate composites shows excellent accuracy of the developed model.

Original languageEnglish
Article number117618
JournalComposite Structures
Volume326
DOIs
StatePublished - Dec 15 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Laminate composites
  • Lattice particle method
  • Nonlocal model
  • Orthotropic materials
  • Thermo-hygro-mechanical coupling

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

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