BIFURCATION BEHAVIOR OF AN OCTAGONAL TRUSS DOME WITH IMPERFECTIONS

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  • 初期不整を有する八角形トラスドームの分岐座屈現象
  • 初期不整を有する8角形トラスドームの分岐座屈現象〔英文〕
  • ショキ フセイ オ ユウスル 8カッケ

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Abstract

This paper offers a group theoretic study of the influence of imperfections on bifurcation buckling behavior of an octagonal, reticulated truss dome structure. The dome exhibited diversified bifurcation behavior in association with various imperfection modes chosen to be covariant with subgroups of a dihedral group. Such variations in bifurcation behavior nonetheless did not alter greatly the buckling capacities of the dome. In addition, the concept of symmetry preserving bifuraction is introduced as a potential cause of bifurcation buckling phenomena.

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