WIT Press

Determination Of Parameters Of A Viscoelastic Model Of Unidirectional Fibrous Polymeric Composites

Price

Free (open access)

Paper DOI

10.2495/CP980511

Volume

21

Pages

10

Published

1998

Size

688 kb

Author(s)

M. Klasztorny & A.P. Wilczyriski

Abstract

General constitutive equations of linear viscoelasticity of a unidirectional fibrous polymeric composite, modelled by a homogeneous monotropic material, are for- mulated. The viscoelastic model is described by nine independent fractional ex- ponential functions, which take into consideration arbitrary creep processes in the composite. A total number of the viscoelastic constants of the material equals 27, i.e. 9 long-lasting compliance ratios, 9 retardation times, and 9 fractions defining the fractional exponential functions. An iterative procedure for estimation of those constants is developed and tested on a selected composite material. 1 Introduction A unidirectional fibrous composite, composed of an isotropic

Keywords