Composite Materials Research Progress

Bending force [N]
Research Directions in the Fatigue Testing of Polymer Composites 227
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Simulated hysteresis curves for different friction conditions
μ = 0.0
μ = 0.1
μ = 0.2
μ = 0.3
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Deflection [mm]
Figure 23. Simulated hysteresis curves for a [90°/0°] 2s carbon/PPS laminate with different friction
conditions at the supports: (i) μ = 0.0, (ii) μ = 0.1, (iii) μ = 0.2 and (iv) μ = 0.3.
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Bending force [N] Simulated force-displacement history for three-point bending test (μ = 0.3)
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Deflection [mm]
Figure 24. Detailed simulation of the force-displacement curve of the [90°/0°] 2s carbon/PPS laminate
for μ = 0.3.
In Figure 23, the simulated hysteresis curves are plotted for different friction conditions.
The complete loading-unloading path has been simulated, where the imposed midspan