波型隔壁板の塑性力学(第2報) : 横衝撃力を受ける四周支持板の大きな変形

概要

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In this report, following the preceding paper, the large plastic deformations of the corrugated bulkhead are discussed under transverse impact at center such as considered inelastic impact when all edges of the bulkhead are supported.From the view-point of perfect-plastic analysis, we are especially concerned about both maximum deflections and maximum impulsive loads by applying the simplified treatment, in the case of plate materials having ideal characteristics of plastic bending moment M_p(θ) such as expressed by M_<po>γ_1(1+γ_2θ) and keeping the ratio of two plastic moments due to bending or twisting, independent of angular velocity θ. In theoretical analysis, the shape of impulsive load is assumed rectanguler between impact duration 2T.Experiment was carried out using several specimens, and its results were compared with the theoretical results for the large permanent deformations, then the close agreements were obtained.
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