Bending Strength of Aluminum Formed Sheet Members

by J. R. Jombock,
John W. Clark,

Serial Information: Journal of the Structural Division, 1968, Vol. 94, Issue 2, Pg. 511-528

Document Type: Journal Paper


An experimental and analytical investigation produced a method of calculating the bending strength of aluminum formed sheet members such as are used for roofing and siding. These members fail by crippling of the flange or web elements at stresses that may be well in excess of the local buckling strength. Specimens (numbering 46) were tested under either uniform bending moment or air pressure loading. Formulas are presented for local buckling and crippling of flange and web elements. Crippling failures occur simultaneously with local buckling in sections with relatively thick plate elements. In other sections, weighted average crippling stresses for the compression elements are used to predict ultimate bending strengths. Agreement with test results is achieved.

Subject Headings: Structural strength | Buckling | Compression members | Bending (structural) | Flexural strength | Flanges | Webs (structure) | Aluminum (material)

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