GROUND-ENGAGING STRUCTURE

摘要

A cyclically movable ground-engaging structure such as a tyre (10). The tyre (10) comprises a resiliently deformable body (12) having provided therein a plurality of cavities (25) each bounded by a cavity wall (32). The cavities (25) are arranged to assume a cross-sectional configuration upon resilient deformation of the body under normal static load conditions wherein said configuration inhibits formation of zones of high stress concentration at the cavity walls (32). The cross-sectional configuration assumed by each of the cavities (32) upon the resilient deformation of the body may be a closed curve. The configuration of the cavities inhibits deformation of the cavity walls (32) to an extent which would allow wall sections thereof to come into contact one with another. In this way, deformation of the cavity walls (32) to the extent where a tight radius of curvature is formed therein is inhibited.