Spectral stiffness microplane modeling of fracture and damage of 3D woven composites

Weixin Li, Marco Salviato, Gianluca Cusatis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A constitutive model is proposed to simulate the orthotropic stiffness, pre-peak nonlinearity, failure envelopes, and the post-peak softening and fracture of 3D woven composites. Following the microplane model framework, the constitutive laws are formulated in terms of stress and strain vectors acting on planes of several orientations within the material meso-structure. The model exploits the spectral decomposition theorem to define orthogonal strain modes at the microplane level. These are associated to the various types of deformation. Strain-dependent constitutive equations are formulated for each mode, corresponding to different damage mechanisms, to relate the microplane eigenstresses and eigenstrains. Model calibration and verification were performed against the experimental data. The capability of the model capturing the intra-laminar size effect of composite structures was also verified.

Original languageEnglish (US)
Title of host publication32nd Technical Conference of the American Society for Composites 2017
EditorsR. Byron Pipes, Wenbin Yu, Johnathan Goodsell
PublisherDEStech Publications Inc.
Pages2972-2987
Number of pages16
ISBN (Electronic)9781510853065
StatePublished - Jan 1 2017
Event32nd Technical Conference of the American Society for Composites 2017 - West Lafayette, United States
Duration: Oct 23 2017Oct 25 2017

Publication series

Name32nd Technical Conference of the American Society for Composites 2017
Volume4

Other

Other32nd Technical Conference of the American Society for Composites 2017
CountryUnited States
CityWest Lafayette
Period10/23/1710/25/17

ASJC Scopus subject areas

  • Ceramics and Composites

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