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Finite Deformation Micromechanical Analysis of Textile-Reinforced Plastics

[+] Author Affiliations
Colby C. Swan, HyungJoo Kim

University of Iowa, Iowa City, IA

Paper No. IMECE2003-55182, pp. 49-57; 9 pages
doi:10.1115/IMECE2003-55182
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Textile Engineering
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Textile Engineering Division
  • ISBN: 0-7918-3729-7 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

Nonlinear elastic stiffness behaviors of plain-weave textile-reinforced composites are considered in this work by modeling finite deformation effects at two scales: (1) at the fiber diameter scale within yarns (~10 microns); (2) at the yarn diameter scale within woven textiles (~1000 microns). To capture the effect of heterogeneous microscale stress and strain fields, symmetric, conjugate, stress and strain measures are first established. A transversely isotropic hyperelasticity model is then presented for modeling finite deformation behaviors of yarns. After the free parameters of this model are estimated using unit cell analysis at the fiber-diameter scale, it is then incorporated into plain-weave textile unit cell model. The textile mode is then subjected to finite strain deformation controlled loading to quantify nonlinearity in stiffness behaviors.

Copyright © 2003 by ASME

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