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Mode interaction with stiffened panels

Neut, A.van der

Previous work on mode interaction refers to a column model consisting of two equal flanges. This model is extremely sensitive to imperfection. Actual panel structures are unsymmetrical: the plate side has more cross section than the topside of the stiffeners; and the plate side is more affected by local buckling than the topside. This effect is exaggeratedly represented in a model where the stifferners do not participate in local buckling. It appears that the sensitivity to imperfections of this model is very little and restricted to geometric parameters R in the near vicinity of R = 1. These two models represent extreme cases. The position of actual tophat stiffened panels between these extremes is being explored. It appears that mode interaction is less severe than with the two flange model though still significant.

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Mode interaction with stiffened panels

Neut, A.van der

Previous work on mode interaction refers to a column model consisting of two equal flanges. This model is extremely sensitive to imperfection. Actual panel structures are unsymmetrical: the plate side has more cross section than the topside of the stiffeners; and the plate side is more affected by local buckling than the topside. This effect is exaggeratedly represented in a model where the stifferners do not participate in local buckling. It appears that the sensitivity to imperfections of this model is very little and restricted to geometric parameters R in the near vicinity of R = 1. These two models represent extreme cases. The position of actual tophat stiffened panels between these extremes is being explored. It appears that mode interaction is less severe than with the two flange model though still significant.

Mode interaction with stiffened panels

Neut, A.van der

Previous work on mode interaction refers to a column model consisting of two equal flanges. This model is extremely sensitive to imperfection. Actual panel structures are unsymmetrical: the plate side has more cross section than the topside of the stiffeners; and the plate side is more affected by local buckling than the topside. This effect is exaggeratedly represented in a model where the stifferners do not participate in local buckling. It appears that the sensitivity to imperfections of this model is very little and restricted to geometric parameters R in the near vicinity of R = 1. These two models represent extreme cases. The position of actual tophat stiffened panels between these extremes is being explored. It appears that mode interaction is less severe than with the two flange model though still significant.

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Title:

Mode interaction with stiffened panels

Additional title:

Zusammenwirkung verschiedener Kraefte auf versteifte Platten

Contributors:

Neut, A.van der (author)

Published in:

BUCKLING OF STRUCTURES - SP. ; 117-132

Publication date:

1974

Size:

16 Seiten, 7 Bilder, 2 Tabellen, 8 Quellen

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

KNICKBEANSPRUCHUNG , DRUCKBEANSPRUCHUNG , PLATTE (BAUTEIL) , FEHLERANALYSE , WERKSTOFFFEHLER , DAUERSTANDFESTIGKEIT

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