释义 |
sand hill analogy sand hill analogy[′sand ‚hil ə‚nal·ə·jē] (mechanics) A formal identity between the differential equation and boundary conditions for a stress function for torsion of a perfectly plastic prismatic bar, and those for the height of the surface of a granular material, such as dry sand, which has a constant angle of rest. Also known as sand heap analogy. |