Abstract
The purpose of this study is to confirm the validity of analytical results of CFRP laminated plates under low-velocity impact. The impulsive responses of CFRP laminated plates are analyzed by using the higher-order shear deformation theory and homogeneous anisotropic plate theory. The plate is simply supported on all four sides and is hit by a spherical steel impactor at its center. The impact load is caculated numerically by using the nonlinear integral equation drived from Hertzian contact law. The strain histories on the plate are evaluated from the higher-order theory and the numerical impact load histories obtained above. The theoretical strain histories are in good agreement with the experimental results obtained by strain gauges. Thus, it was shown that the results obtained from this study could explain not only qualitatively, but also quantitively, the impact characteristics which depend on the stacking sequence of unidirectional prepreg.
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