A Generalized Approach to the Local Stability of Stiffened Plates: Part II–Approximate Solution

by Archibald Sherbourne, Univ of Waterloo, Waterloo, Canada,
Osama Bedair, Univ of Waterloo, Waterloo, Canada,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

The paper presents an approximate solution for the prediction of the buckling stress of stiffened plates under combined loadings. A closed form expression is presented for the buckling coefficient in terms of the skew angle and half wave-length. Sequential quadratic programming is then used to determine the values of these parameters that minimize the buckling coefficient for the plate under given stress ratios and torsional rigidity of the attached stiffeners. Comparison of the predictions of the derived expression with various numerical results is made for the limiting cases of simply supported and clamped boundaries.



Subject Headings: Shear stress | Plates | Structural stability | Biaxial loads | Approximation methods | Load factors | Closed form solutions | Skewness

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