格子状リブを有するCFRPサンドイッチ版の局部座屈に関する研究

概要

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Flat rectangular sandwich-type panels were tested in edgewise compression and under four points bending. The sandwich consisted of CFRP faces with latticed GFRP ribs and a phenol or an urethane foam core. First, local buckling (wrinkling) of the faces occurred in the experiments. The results of the experiments were summarized for buckling stress and buckling wavelength. Second, the local buckling stress for the sandwich panels with latticed ribs were obtained from the general theory of the stationary for the total potential energy. The obtained formulae show that the ribs and the core remarkably resist the local buckling of the face. Consequently the agreements between the theories and the experiments for buckling stress and buckling wavelength are discussed.
社団法人日本建築学会の論文
2003-11-30