Structural sheet and panel
AssigneeAluminum Company of America
InventorsDinesh C. Seksaria, Glenn W. Jarvis
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Abstract
The invention relates to a structural sheet formed with cup-shaped projections in which the sidewalls are formed by a sigmoidal line of revolution to provide for more uniform distribution of stress in the structural sheet. There is also provided a novel two-component structural panel which incorporates the advantages of such a structural element to eliminate depressions in the outer panel member which would present "read through" problems.
Claims7
A high-strength light weight sheet adapted for use as a panel component consisting of a shaped sheet formed of a plurality of generally cup-shaped spaced elements having a generally flat top portion, a lower generally planar portion, and sidewall portions formed by a sigmoidal line of revolution, which sidewall portions blend smoothly into the flat top portion and adjacent lower generally planar portions providing for uniform stress concentration in the elements and the elimination of stress concentrations at the upper and lower portions of said cup-shaped elements.
A two-component structural panel consisting of a first sheet having substantially smooth inner and outer surfaces and a second rigidifying, high-strength light weight sheet formed of a plurality of inverted cup-shaped elements having a generally flat top portion and sigmoidal-shaped sidewalls formed between the flat top portions and lower generally planar surfaces, which sidewalls blend smoothly into the flat top portions and the lower generally planar surfaces, and means securing said upper planar surface to the inner surface of said first sheet.
Dependencies are inferred from the claim text.