An engine hood structure including a hood panel, and a porous metal layer
disposed on an inside of the hood panel. The porous metal layer has a
density increased in a direction extending from an outer periphery of the
engine hood structure toward a central portion of the engine hood
structure. The porous metal layer is constructed such that a plateau
stress generated in the porous metal layer upon a compression test is
increased in a direction extending from an outer periphery of the engine
hood structure toward a central portion of the engine hood structure.