Hollow-walled lattice materials by additive manufacturing: Design, manufacture, properties, applications and challenges

Less Is More: Hollow‐Truss Microlattice Metamaterials with Dual Sound Dissipation Mechanisms and Enhanced Broadband Sound Absorption

“…For the HTMs, their mode of deformation is in turn more structural‐based as evident from the cell wall folding/bending/tearing and sequential macroscopic shear bands (Figure 5Cii). [ 37 ] Different from OSTs, there is no presence of abrupt rupture and the HTMs are also observed to be well intact at −0.1 strain. This hence results in the HTMs to deform with a characteristic plateau stress and densification zone, similar to ductile microlattices.…”

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

“…The underlying reasons for the superior mechanical properties of HSLs to their solid-strut counterparts have been discussed in recent studies. 17,30,31,38 It is mainly due to their hollow strut sections that exhibit higher resistance to bending than solid-strut lattices, resulting in greater strength and stiffness. More specifically, at the same strut length and relative density, the actual strut cross-sectional area remains approximately the same for both the solid and hollow struts.…”

Design Aspects of Additive Manufacturing at Microscale: A Review

“…Multi-material fabrication poses new challenges in the design and fabrication of smart components [ 26 ]. Recent advancements in the field of design, modeling and simulation, fabrication, and testing of lattice structures can be found in the following review papers [ 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 ]. Deriving the effective properties of additively manufactured micro-lattice structures is an important tool in the hands of designers for performing fast simulations at a low computational cost [ 126 , 137 , 138 , 139 ].…”