柔軟節の回転特性に基づく周期正方セル構造の短波長座屈モード

抄録

The mechanical properties of spatial structures constructed of joints and beam members are strongly influenced by both their geometrical configurations and joint rigidities. From the standpoint of joint flexibility, we have formulated the elastic deformation model of a two-dimensional flexibly jointed structure with multi-rotational nodes. The aim of this paper is to make clear the relationship between overall buckling characteristic and local rotations of the flexibly jointed structure. To this end, the structural instability of periodic square cells under equi-biaxial compression is evaluated by applying our proposed model, and it is clarified that the short wave-length buckling modes are determined by the combinations of multi-rotational modes of flexible joints.