Microstructure-based deep-drawing simulation of knitted fabric reinforced thermoplastic by homogenization theory

N. Takano, Y. Ohnishi, M. Zako, K. Nishiyabu

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


Process simulation of fiber reinforced composite materials is an important research theme for the development of low-cost and advanced functional composite materials. This paper aims at the simulation of deep-drawing process of knitted fiber reinforced thermoplastics and its verification. The feature of the simulation is that the large deformation of the knitted microstructures can be traced everywhere in the deep-drawn product. The homogenization theory is applied to analyze the micro-macro coupled behaviors of the knitted fabric composite material. By employing a simplified nonlinear computational algorithm, the deep-drawing simulation was carried out on a personal computer. The predicted largely deformed microstructures were compared with the experimental results. The numerical results and experimental ones agreed quite well. This deep-drawing simulation requires us to prepare only the mechanical properties of the constituents, while it provides us all the necessary quantities such as the deformation, strain, stress and stiffness from both microscopic and macroscopic standpoints.

Original languageEnglish
Pages (from-to)6333-6356
Number of pages24
JournalInternational Journal of Solids and Structures
Issue number36-37
Publication statusPublished - 2001 Aug 10
Externally publishedYes


  • Composite material
  • Deep-drawing
  • Homogenization theory
  • Knitted microstructure
  • Large deformation
  • Process simulation

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics


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