板の圧壊挙動を表す簡易解析モデルの開発とその応用

概要

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This paper deals with development and application of a simple dynamical model which accurately simulate the buckling/plastic collapse behaviour of a plate subjected to cyclic inplane load accompanied by complex unloading and reloading. This model is based on the results of elastic large deflection analysis and rigid plastic mechanism analysis in analytical forms assuming a simple deflection mode. The proposed model is implemented into a beam-column element as one of the fibre to analise buckling/plastic collapse behaviour of a continuous stiffened plating subjected to thrust. The beam-column element is composed of a stiffener and attached plating. The fibre representing the plating is assumed to behave according to the proposed simple dynamical model. Applicabilities of the new plate model and the new beam-column element are demonstrated through comparison of the calculated results with those by the ordinary elastoplastic large deflection FEM analysis.
社団法人日本船舶海洋工学会の論文