| 摘要 |
<p>A composite material is provided including a plurality of panels. Each panel includes a plurality of evenly spaced hemispherical shells. Each hemispherical shell includes a concave inner surface, a convex outer surface and an annular surface. Each panel further includes a plurality of flanges each extending outwardly from the annular surface of a respective one of the plurality of hemispherical shells. Each flange extends in a direction substantially perpendicular to the convex outer surface, and the flanges extend between adjacent hemispherical shells. The plurality of panels is divided into pairs of panels, the pairs of panels being oriented such that the annular surface of a first of the pair of panels mates with the annular surface of a second of the pair of panels and the concave inner surface of the first of the pair of panels faces the concave inner surface of the second of the pair of panels thereby forming a spherical hollow area therebetween. The pairs of panels are stacked so as to orient the spherical hollow areas in a close- packed formation.</p> |
