OS1520 見掛けの横弾性係数を考慮した一方向CFRPの圧縮強度予測(OS15-4 複合材料の変形と強度,OS-15 微視構造を有する材料の変形と破壊)

概要

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Compressive strength of a unidirectional CFRP was estimated based on a model of column buckling on elastic foundation. It was shown that the compressive strength based on the column buckling model coincided with the compressive strength based on the fiber kinking model when high fiber volume fraction was supposed for the unidirectional CFRP. Apparent shear modulus of a carbon fiber in the in-phase buckling was calculated considering shear and bending deformation as an apparent shear deformation. Compressive strengths of unidirectional CFRPs were estimated by considering the apparent shear modulus. The estimation results on various types of unidirectional CFRP showed good agreement with the experimental results. Upper and lower limit of the compressive strengths of the unidirectional CFRPs were revealed theoretically.
一般社団法人日本機械学会の論文
2011-07-16