Elasto-Plastic Bending Deformation of Welded Honeycomb Sandwich Panel.

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  • 溶接接合ハニカムパネルの弾塑性曲げ変形
  • ヨウセツ セツゴウ ハニカム パネル ノ ダンソセイ マゲ ヘンケイ

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In order to investigate the elastic and plastic bending deformation of a sandwiched beam with honeycomb core, three-point bending tests were carried out statically. Tensile tests were also performed to obtain the mechanical properties of surface plate material. It was found from bending tests that the applied load began to decrease just after the occurrence of plastic buckling of the honeycomb cell underneath the loading point. Welded joints never failed even after buckling of a honeycomb cell. By extending the elementary bending theory into the plastic region, elastoplastic load-deflection curves were obtained. The effect of shear force on honeycomb core was also taken into account. The load-deflection curve obtained by the analysis showed reasonable agreement with that obtained from experiments.

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