Research and applications of metal lattice sandwich structure fabricated by additive manufacturing
The metal lattice sandwich structure has excellent mechanical,acoustic,electrical,and thermal comprehensive properties.Additive manufacturing is based on the idea of"discrete + stacking"and stacked layer by layer,which can liberate the design idea of complex metal lattice structure,provide a higher degree of freedom for bionic design and topology optimization,and provide more possibilities for the subsequent development of ultra-light and ultra-strong multi-functional lattice sandwich structures.In this paper,the process of additive manufacturing of metal lattice sandwich structures was reviewed.The structural design,process optimization,defect control,performance regulation,and application background were analyzed and discussed in depth.The existing research status was summarized,and the future development prospects were discussed.