Responses of 3D biaxial spacer weft-knitted composite circular plate under impact loading. Part I: Unit-cell and elasto-plastic constitutive model

Baozhong Sun, Hong Hu, Bohong Gu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


A new kind of 3D knitted fabric, named 3D biaxial spacer weft-knitted fabric, is introduced to demonstrate the advantage of a 3D structure. A unit-cell model of the 3D knitted fabric reinforced composite has been developed to define the stiffness/compliance matrix. The elasto-plastic constitutive relations of the composite were deduced to characterize the material's behavior. The failure criteria of the composite is a kind of critical damage area (CDA), i.e. composite failure will occur only when stresses exceed the local fiber strength and a CDA has been reached. The unit-cell failure and stiffness degradation is discussed based on the failures of different fiber tows.
Original languageEnglish
Pages (from-to)28-34
Number of pages7
JournalJournal of the Textile Institute
Issue number1
Publication statusPublished - 1 Jan 2010


  • 3D biaxial spacer weft-knitted composite
  • Critical damage area (CDA)
  • Stiffness degradation
  • Unit-cell elasto-plastic constitutive relation

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Agricultural and Biological Sciences(all)
  • Polymers and Plastics
  • Industrial and Manufacturing Engineering

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