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Analytical study finds torsional rigidity crucial for buckling in multi-span elastic plates, suggesting stiffeners can limit deformation.
Buckling problems of two types of multi-span elastic plates with transverse stiffeners are considered using a method based on the analytical finite difference calculus. The discreteness of the stiffeners are accounted for. It is found that the torsional rigidity of the stiffener plays an important role in the buckling mode pattern. When the torsional rigidity is properly adjusted, the stiffener can act as an isolator of deformation for the structure at buckling so that the deflection is only limited to a small area.
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Elishakoff et al. (1995) studied this question.
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