K-0933 ハイブリッド複合材料GLARE 3の静的引張挙動とそのモデル化(J05-5 強度・破壊機構解析(2))(J05 複合材料の加工と評価)

概要

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Off-axis deformation and fracture of GLARE 3, a cross-ply hybrid laminate of glass/epoxy laminae and aluminum-alloy sheets, have been examined at room temperature (RT) and 100℃ (HT), respectively. The tensile stress-strain curve has a clear transition from linear response to nonlinear one, irrespective of the off-axis angle and test temperature. This is due to the yielding of the aluminum-alloy layers. The elastic modulus and tensile strength become lower at HT. Forθ=15, 30 and 45°, a sudden decrease in the flow stress takes place just before the ultimate fracture occurs at HT. A modified classical laminated plate theory that takes into account an incomplete failure in the GFRP layers has been applied to describe the off-axis stress-strain curves. The modified classical laminated plate theory favorably describes the off-axis deformation of GLARE 3.
一般社団法人日本機械学会の論文
2001-08-22