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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(3) [June 2010] >
| Title: | Damage prediction in glass/epoxy laminates subjected to impact loading |
| Authors: | Karakuzu, Ramazan
Erbil, Emre
Aktas, Mehmet |
| Keywords: | Damage prediction
Low velocity impact
Glass/epoxy
Thickness effect
Stacking sequence effect
Delamination |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: |
In this paper, the impact behaviour of glass/epoxy laminated
composite plates with [0/±θ/90]S fiber orientation is investigated
numerically at equal energy (40 J), equal velocity (2 m/s) and equal impactor
mass (5 kg).
In order to examine the stacking sequence effect, five different ±θ fiber
directions are chosen as 15°, 30°, 45°, 60° and 75°. Three different plate
thicknesses as 2.9 mm,
5.8 mm,
and 8.7 mm
are also selected to survey the thickness effect on impact behaviour of
glass/epoxy composite plates. The overlapped delamination area is obtained for
composite plates with different stacking sequences and different thicknesses. A
transient finite element code 3DIMPACT is used for numerical analyses. In this
code an eight-point brick element and the direct Gauss quadrature integration
scheme are used through the element thickness to account for the change in
material properties from layer to layer. The Newmark scheme is also adopted to
perform time integration step by step. In addition, a contact law incorporated
with the Newton-Raphson method is applied to calculate the contact force during
impact. Numerical results are compared with the experimental study and it has
been seen that they are in good agreement with the experimental results.
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| Page(s): | 186-198 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(3) [June 2010]
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