Forming Aligned Fiber Composites into Complex Shapes

  • Gutowski T
  • Tam A
  • Dillon G
 et al. 
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Abstract

Differential geometry theory is used to show how an ideal aligned fiber composite (incompressible, inextensible fibers, constant uniform spacing between fibers) must be deformed in order to make a part of complex curvature. Three fundamental results are obtained: the first two relate the required shears to the fiber curvatures (normal and geodesic), and the third, called the Gauss-Bonnet theorem, relates the shears to the Gaussian curvature of the part and the fiber orientation. Finally, it is shown how these results can be used to simplify experimental data. © 1991 CIRP.

Author-supplied keywords

  • Composites
  • differential geometry
  • forming

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