Abstract
The impact response of a sixteen-layered cross-ply graphite/epoxy lami nate has been studied. The interlaminar stress components obtained by use of two different approaches are compared. The model based on accounting for the individual ply proper ties and the jumps of transverse strains on the interlaminar planes is compared to the model based on the effective properties. A good agreement (1-2% difference) for the inte grated response characteristics, like contact force history, is observed. The detailed re sponse characteristics, like maximum transverse shear stress components, may result in ±20% difference, depending upon the location and time moment at which the results are calculated. However, the interlaminar stress components computed by the two methods at a location close to the impact zone are almost identical.
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