A multiscale design system for fatigue life prediction

E. Gal, Z. Yuan, W. Wu, Jacob Fish

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We present a multiscale design system (MDS) for fatigue life prediction of composite materials and structures. The system is based on the reduced order spatial homogenization, adaptive cycle block integration, and identification of fine-scale material parameters from experimental data. Fatigue is modeled as a multiscale space-time problem. The reduced order homogenization is used for spatial upscaling (or coarse graining). The cycle block scheme, which estimates the rate of material degradation from a single load cycle and then adaptively projects it over n cycles, is used for temporal upscaling. The MDS has been seamlessly integrated in ABAQUS, and a graphical user interface has been developed.

Original languageEnglish
Pages (from-to)435-446
Number of pages12
JournalInternational Journal for Multiscale Computational Engineering
Volume5
Issue number6
DOIs
StatePublished - 1 Dec 2007

Keywords

  • Composite materials
  • Damage mechanics
  • Eigenstrain
  • Fatigue life prediction
  • Finite element method
  • Homogenization theory
  • Multiscale analysis
  • Upscaling

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