Woven fabric composites: Part 2 - characterization of macro-crack initiation loads for global damage analysis

Jaehyon Choi, Kumar K. Tamma

Research output: Contribution to journalConference articlepeer-review

Abstract

In Part 2, finite element techniques are developed to additionally investigate the global damage of woven fabric composites, focusing on plain weaves. The homogenized elastic properties of the original undamaged and the damaged woven fabric composites from the micromechanical homogenization and the micromechanical progressive damage analysis investigated earlier in Part 1 are subsequently employed in the present global damage analysis. The theory of continuum damage mechanics is utilized in the global damage analysis. The damage variables, the most important material properties of the continuum damage mechanics, are measures of average material degradation at a macro-mechanics scale. In the present study, these damage variables are calculated numerically using the results from the micromechanical damage analysis in Part 1, instead of being obtained experimentally. Subsequently, a finite element formulation for the global damage analysis of woven fabric composites is developed to predict the initiation loads of macro-cracks.

Original languageEnglish (US)
Pages (from-to)2036-2046
Number of pages11
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume3
StatePublished - Jan 1 1999
EventProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit - St. Louis, MO, USA
Duration: Apr 12 1999Apr 15 1999

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