ラティスサンドイッチパネルの熱座屈における境界条件が及ぼす座屈温度への影響

抄録

In this study, the thermal buckling temperatures of square-plate sandwich panels with Pyramid cores were determined by the finite element method. In particular, we focused on the boundary conditions and compared six patterns of CCCC, CCSC, CSSC, CSCS, CSSS, and SSSS, in which S means simply supported edges and C means clamped edges. The buckling modes observed are classified into two types: global buckling and local buckling. Global buckling occurs when the core height tc/a, which is the distance tc between face plates per side length a, is small, while local buckling occurs when the core height tc/a is large. The results showed that the buckling temperatures of CCCC, CCSC, CSCS, CSSC, CSSS, and SSSS were higher in the order of total buckling, and the behavior was similar to that of the theoretical solution. On the other hand, in partial buckling, the buckling temperatures of all plates converged to a constant value for each number of cores.