Influence of Residual Strains on Buckling of Thin Filament-Wound Cylinders in Axial Compression

This paper describes a method for improving the accuracy of buckling predictions of thin-shell, filament-wound cylinders under axial compression loads using enhanced finite-element models. This is accomplished by incorporating the out-of-plane displacements due to residual strains, in addition to re...

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Published in:Journal of aerospace engineering 2001-01, Vol.14 (1), p.21-28
Main Authors: Pai, Suresh P, Jensen, David W
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description This paper describes a method for improving the accuracy of buckling predictions of thin-shell, filament-wound cylinders under axial compression loads using enhanced finite-element models. This is accomplished by incorporating the out-of-plane displacements due to residual strains, in addition to realistic stiffness coupling due to fiber undulations, into finite-element models. The out-of-plane displacements of filament-wound cylinders were scanned mechanically and incorporated into the finite-element models using a computer program. An eigenvalue buckling analysis was performed on these models. Results show that the accuracy of the buckling load prediction of the model with stiffness coupling and out-of-plane displacements due to residual strains is significantly improved compared to the case when only the stiffness coupling is incorporated into the model.
doi_str_mv 10.1061/(ASCE)0893-1321(2001)14:1(21)
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title Influence of Residual Strains on Buckling of Thin Filament-Wound Cylinders in Axial Compression
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