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A failure model for the analysis of thin woven glass composite structures under impact loadings

Authors
Journal
Computers & Structures
0045-7949
Publisher
Elsevier
Publication Date
Volume
79
Issue
8
Identifiers
DOI: 10.1016/s0045-7949(00)00190-5
Disciplines
  • Physics

Abstract

Abstract A progressive damage model for a woven glass fibre fabric reinforced with epoxy composite was developed and implemented into a well known explicit Lagrangian finite element code. The approach uses a novel damage mechanics formulation to predict in-plane damage in a woven fabric composite defined by matrix cracks and fibre fracture in the warp and weft directions. The model uses a stress based energy dissipation approach and an advanced post failure strain softening methodology. Strain-rates effects, which are commonly observed for woven glass composites are modelled using a damage lag formulation within the constitutive model. Results are compared with laboratory experiments and full-scale tests. The comparisons indicate that the damage model can predict with reasonable accuracy the damage modes observed in both the laboratory and full-scale experiments. Conclusions are presented also on the logical extensions to the damage formulation.

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