Modifications to beam theory for bending and twisting of open-section composite beams — experimental verification

The experimental verification of a modified beam theory for open-section, thin-walled, anisotropic composite beams is described. Symmetric and anti-symmetric glass/polyester I-beams were fabricated by hand-layup and vacuum bag techniques. These beams were supported as cantilevers and tested under tr...

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Bibliographic Details
Published in:Composite structures 1992, Vol.22 (3), p.169-177
Main Authors: Smith, S.J., Bank, L.C.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
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Summary:The experimental verification of a modified beam theory for open-section, thin-walled, anisotropic composite beams is described. Symmetric and anti-symmetric glass/polyester I-beams were fabricated by hand-layup and vacuum bag techniques. These beams were supported as cantilevers and tested under trip loads (transverse loading) and end moments (pure bending). Anisotropically induced twist and out-of-plane lateral deflection as well as in-plane transverse deflection (bending deflection) were measured. Comparisons with finite-element analysis using a commercial code are also presented. Good correlation was found between the experimental, finite-element analysis, and the theory for the twist and bending deflection of the beams. Out-of-plane deflections were found to be too small to be measured accurately.
ISSN:0263-8223
1879-1085
DOI:10.1016/0263-8223(92)90004-V