Viscoplastic Analysis of the Off-axis Rate-dependent Inelastic Behavior of Unidirectional AS4/PEEK

Using the finite element program generator (FEPG), the three-dimensional viscoplasticity model is introduced into this finite element automatic generating system. The corresponding element subroutine is developed, which is verified by comparing the finite element computing results with the experimen...

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Bibliographic Details
Published in:Journal of reinforced plastics and composites 2006-03, Vol.25 (5), p.475-482
Main Authors: Ding, S. R., Huo, Y. Z., Tong, J. W., Shen, M., Aymerich, F., Priolo, P.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Finite element method
Forms of application and semi-finished materials
Mathematical analysis
Nonlinearity
Polyetheretherketones
Polymer industry, paints, wood
Polymer matrix composites
Strain rate
Stress strain curves
Stress-strain relationships
Technology of polymers
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Summary:Using the finite element program generator (FEPG), the three-dimensional viscoplasticity model is introduced into this finite element automatic generating system. The corresponding element subroutine is developed, which is verified by comparing the finite element computing results with the experimental ones. With the generated procedure the monotonic tensile stress–strain curves are obtained under the strain rate of 0.1 s 1for the off-axis angles 5, 10, 15, 30, 45, 60, 75, and 90, respectively. The above stress versus strain curves show marked nonlinearity for the off-axis angles in the range 10 <
ISSN:0731-6844
1530-7964
DOI:10.1177/0731684405056456