Micromechanical Analysis of Nonlinear Viscoelastic Unidirectional Fiber-Reinforced Composites

Article Preview

Abstract:

The micromechanical approach of Simplified Unit Cell Method (SUCM) in closed-form three dimensional solutions is used for predicting creep response of unidirectional fiber reinforced composites. The composite consist of elastic fibers reinforcing nonlinear viscoelastic resin. The nonlinear viscoelastic matrix behavior is modeled by using Schapery single integral viscoelastic constitutive equation. Off-axis specimens of graphite/epoxy with 45 and 90 fiber orientations were subjected to 480 minutes creep tests and the results is compared with experimental data and MOC results available in the literature. There is good agreement with experimental results due to using SUCM.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

1166-1170

Citation:

Online since:

October 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] R.A. Schapery: On the Characterization of Nonlinear Viscoelastic Materials, Polymer Engineering and Science, 9(4), 259-310, (1969).

Google Scholar

[2] M.E. Tuttle, H.F. Brinson: Prediction of the Long-Term Creep Compliance of General Composite Laminates, Experimental Mechanics 26, 89-102, (1986).

DOI: 10.1007/bf02319961

Google Scholar

[3] A.H. Muliana, R.M. Haj-Ali: Nested Nonlinear Viscoelastic and Micromechanical Models for the Analysis of Pultruded Composite Materials and Structures, Mechanics of Materials, 36(11), 1087-1110, (2004).

DOI: 10.1016/j.mechmat.2003.10.003

Google Scholar

[4] M. Henriksen: Nonlinear Viscoelastic Stress Analysis-A finite Element Approach, Comput Strut., 18, 133-139, (1984).

DOI: 10.1016/0045-7949(84)90088-9

Google Scholar

[5] R.M. Haj-Ali, A.H. Muliana: Numerical Finite Element Formulation of the Schapery Nonlinear Viscoelastic Material Model, International Journal of Numerical Method in Engineering, 59(1), 25-45, (2004).

DOI: 10.1002/nme.861

Google Scholar

[6] R.M. Haj-Ali, A.H. Muliana: A Multi-Scale Constitutive Formulation for the Nonlinear Viscoelastic Analysis of Laminated Composites Materials and Structures, International Journal of Solids and Structures, 41(13), 3461-3490, (2004).

DOI: 10.1016/j.ijsolstr.2004.02.008

Google Scholar