Characterization of high-velocity impact damage in CFRP laminates: Part II - Prediction by smoothed particle hydrodynamics

Shigeki Yashiro, Keiji Ogi, Akinori Yoshimura, Yoshihisa Sakaida

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

High-velocity impact damage in CFRP laminates was studied experimentally and numerically. Part I of this study observed and evaluated near-perforation damage in the laminates and characterized the damage pattern experimentally. Part II predicts the extension of high-velocity impact damage based on smoothed particle hydrodynamics (SPH), which facilitates the analysis of large deformations, contact, and separation of objects. A cross-ply laminate was divided into 0 and 90 layers, and virtual interlayer particles were inserted to express delamination. The damage patterns predicted on the surfaces and cross-sections agreed well with the experiments. The analyzed delamination shape was similar to that resulting from a low-velocity impact, consisting of pairs of fan-shaped delaminations symmetric about the impact point. Finally, the mechanisms of high-velocity impact damage in CFRP laminates are discussed based on the observations and numerical analyses.

Original languageEnglish
Pages (from-to)308-318
Number of pages11
JournalComposites Part A: Applied Science and Manufacturing
Volume56
DOIs
Publication statusPublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials

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