Micromechanical analysis of lattice blocks

Jacob Aboudi*, Rivka Gilat

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Multiphase lattice blocks with periodic structure are analyzed by a continuum-based micromechanical approach. As a result, effective stiffness tensors, global initial yield surfaces, global damage thresholds, effective inelastic stress-strain responses and critical yielding temperatures of lattice blocks are established. Applications are given for various types of elastic and inelastic lattice blocks made of an aluminum alloy. Furthermore, a lattice block with negative effective Poisson's ratios is considered, and two types of two-phase lattice blocks that are capable to produce negative effective coefficients of thermal expansion are presented.

Original languageEnglish
Pages (from-to)4372-4392
Number of pages21
JournalInternational Journal of Solids and Structures
Volume42
Issue number15
DOIs
StatePublished - Jul 2005

Keywords

  • High fidelity generalized method of cells (HFGMC).
  • Homogenization
  • Micromechanics
  • Negative Poisson's ratio
  • Re-entrant configuration
  • Yield surface

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