泡沫铝填充金属波纹夹芯梁弯曲破坏模式研究

Aluminum foam-filled corrugated sandwich beam was designed using aluminum foam as filling material to improve the load bearing efficiency of metallic sandwich beam with corrugated cores. Considering the anisotropy of the corrugated structure, both transverse and longitudinal bending response and failure modes were studied by three-point bending test. The result shows that aluminum foam filling can effectively change the bending failure mode of corrugated sandwich beam, leading to a significant increase of bending stiffness and peak bending load. Compared with transverse bending, the enhancement effect of aluminum foam filling on longitudinal bending is more significant, and corrugated sandwich beam has stronger bearing capacity in longitudinal bending. The bending loads presents a long plateau region after its peak without notable decline, showing a stronger post-buckling Load-bearing capacity.