軸圧を受ける積層円筒シェルの座屈耐力に及ぼす繊維配向角の影響

概要

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It is well-known that axially compressed cylindrical shells have a buckling behavior which is very sensitive to initial geometric imperfections. However current approaches, using mathematical algorithms to optimize the linearized classical critical loads with respect to many design variables, generally ignore the potential reductions in elastic load carrying capacities that result from the initial imperfections. They present major problems for incorporation into design process and often involve excessively computational effort Therefore this paper practices classical buckling analysis for ideal shells and nonlinear analysis can include the effects of initial imperfection, about 6-ply symmetric, glass-epoxy cylindrical shells. Additionally we apply a lower bound design philosophy called the reduced stiffness method for providing important basis for design and confirm the correspondence of both lower bounds by nonlinear analysis and reduced stiffness analysis.
一般社団法人日本建築学会の論文
2008-03-25