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New cellular metals with enhanced energy absorption

Wire-woven bulk kagome (WBK)-metal hollow sphere (MHS) hybrids
Neue zelluläre Metalle mit erhöhter Energieabsorption. Hybridwerkstoffe aus Kagome-Drahtstrukturen (WBK) und Metallhohlkugeln (MHS)
: Li, M.-Z.; Stephani, G.; Kang, K.-J.


Advanced engineering materials 13 (2011), No.1/2, pp.33-37
ISSN: 1438-1656
ISSN: 1615-7508
Journal Article
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

Two types of new cellular metals are fabricated by assembling layer by layer helically-formed wires with MHS (metal hollow sphere) arrays. In the finished configuration, the MHSs are located in small tetrahedrons or octahedrons of the inner space of a WBK (wire-woven bulk Kagome) structure. Compression tests reveal excellent energy absorption, which is attributed to combination of suppression of strut buckling in the WBK and moving plastic hinge occurring in the MHSs. The WBK-MHS hybrids outperform competitors in deformation energy absorption.