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Minimum Stiffness Criteria for Edge Reinforcements of Elastically Clamped Plates
Author(s) -
Weißgraeber Philipp,
Mittelstedt Christian,
Becker Wilfried
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010105
Subject(s) - stiffness , fuselage , structural engineering , buckling , enhanced data rates for gsm evolution , dimensionless quantity , aerospace , reinforcement , bending stiffness , minimum weight , materials science , engineering , mechanics , physics , telecommunications , aerospace engineering
In many structural situations, e.g. in aerospace engineering, composite plates with edge reinforcements are used, for example as stiffeners of a fuselage section of an airplane. Based on an explicit analysis of the buckling behavior of the laminate plate, a minimum stiffness criterion is presented in this contribution. A transformation of the governing equations into a dimensionless system is used, that proved to be very advantageous. Besides a minimum stiffness criterion that can be used for generation of minimum stiffness diagrams, an absolute minimum stiffness is found that enables the reinforcement to act like a simple support for arbitrarily slender plates. The relevance of the criteria for stiffener design is discussed. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)