面内圧縮荷重を受ける矩形板の2次座屈に伴う飛び移り現象について

概要

論文の詳細を見る
A series of dynamical elastic/elastoplastic large deflection analyses was performed to investigate into the fundamental characteristics of the snap-through phenomena accompanied by secondary buckling when a rectangular plate is subjected to uni-axial thrust in the direction of its longer side. Based on the calculated results, it has been found that: (1) Along the unloading path in the post-ultimate strength range, snap-through sometimes takes place. This is because of the elastic unloading in the wider area of the plate which was caused by the concentration of plastic deformation at a certain part of the plate. (2) Initial deflection of the primary buckling mode increases the snap-through load whereas that of the secondary buckling mode reduces the snap-through load. (3) Welding residual stress as well as edge constraint against rotation reduces the snap-through load from the primary buckling mode to the secondary buckling mode.
社団法人日本船舶海洋工学会の論文