Node-reinforced hollow-strut metal lattice materials for higher strength

Noronha, J.; Dash, J. G.; Leary, Martin; Downing, David; Kyriakou, E.; Brandt, Milan; Qian, Ma

doi:10.1016/j.scriptamat.2023.115547

Cited by 19 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relative density of the structure is expressed as ρ*/ ρs. The C and m constants are taken as 1.0 and 1.5, respectively, to characterize the upper limits of the formulae (Noronha et al , 2023). The value of σy,s was determined as the mean value of 251.45 MPa through tension tests conducted on three additively manufactured specimens, all produced with the same processing parameters used in this study.…”

Section: Resultsmentioning

confidence: 99%

Compressive properties of AlSi10Mg lattice structures with novel BCCZZ and FCCZZ configurations fabricated by selective laser melting

Seremet,

Babacan

2024

RPJ

View full text Add to dashboard Cite

Purpose This paper aims to examine the static compression characteristics of cell topologies in body-centered cubic with vertical struts (BCCZ) and face-centered cubic with vertical struts (FCCZ) along with novel BCCZZ and FCCZZ lattice structures. Design/methodology/approach The newly developed structures were obtained by adding extra interior vertical struts into the BCCZ and FCCZ configurations. The samples, composed of the AlSi10Mg alloy, were fabricated using the selective laser melting (SLM) additive manufacturing technique. The specific compressive strength and failure behavior of the manufactured lattice structures were investigated, and comparative analysis among them was done. Findings The results revealed that the specific strength of BCCZZ and FCCZZ samples with 0.5 mm strut diameter exhibited approximately a 23% and 18% increase, respectively, compared with the BCCZ and FCCZ samples with identical strut diameters. Moreover, finite element analysis was carried out to simulate the compressive response of the lattice structures, which could be used to predict their strength and collapse mode. The findings showed that while the local buckling of lattice cells is the major failure mode, the samples subsequently collapsed along a diagonal shear band. Originality/value An original and systematic investigation was conducted to explore the compression properties of newly fabricated lattice structures using SLM. The results revealed that the novel FCCZZ and BCCZZ structures were found to possess significant potential for load-bearing applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Compressive properties of AlSi10Mg lattice structures with novel BCCZZ and FCCZZ configurations fabricated by selective laser melting

Seremet,

Babacan

2024

RPJ

View full text Add to dashboard Cite

show abstract

“…6a), similar to Ti-6Al-4V HSLs. 30,38 Furthermore, when comparing the correlation coefficient for each data set, the Ti-6Al-4V and AlSi10Mg HSLs observed an almost perfect correlation of R 2 = 0.99 for both the FCC and FCCZ topologies. This indicates that LPBF AlSi10Mg can fabricate structurally efficient HSLs of a similar standard to LPBF Ti-6Al-4V HSLs.…”

Section: Mechanical Propertiesmentioning

confidence: 93%

“…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.…”

Section: Materials Advancesmentioning

confidence: 99%

“…This also highlights the advantage of reinforcing the hollow-strut nodes with load-aligned struts to reduce this inefficiency. 31…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…This indicates that their deformation behaviours are likely more topology-dependent or less material-dependent. 30,31 However, more load-aligned topologies should be assessed to consolidate these claims.…”

Section: Finite Element Modelling (Fem) Of Stress Distributionmentioning

confidence: 99%

See 2 more Smart Citations

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Noronha,

Leary,

Brandt

et al. 2024

Mater. Adv.

Self Cite

View full text Add to dashboard Cite

show abstract

Additive Manufacturing of Anisotropic TC4 Cubic Hollow‐Strut Lattice Structures with High Specific Yield Strength: Optimization, Properties, and Failure Modes

Xu,

Ding,

Han

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Additive manufacturing permits the precision design and meticulous fabrication of lattice structures, thereby unlocking their potential performance capabilities. Herein, to enhance the specific strength of the cubic lattice structure, three design strategies are applied: substituting solid struts with hollow ones, increasing the material proportion of vertical struts, and introducing cross plates into the hollow struts. The results demonstrate that the strategy of substituting solid struts with hollow ones effectively contributes to a substantial enhancement of 113% in the compressive yield strength of lattice structures. Furthermore, increasing the vertical material proportion from 70% to 85% while maintaining a constant relative density of 0.30, a significant enhancement is observed in both yield and ultimate strength. Additionally, introducing cross plates into the hollow struts at a vertical material proportion of 90% results in a remarkable enhancement of the specific yield strength to 230 MPa cm3 g−1, significantly surpassing that of the TC4 matrix. The optimized lattice structures exhibit exceptional uniaxial strength, tremendously exceeding the predicted limits of the Gibson–Ashby model. Thus, the Gibson–Ashby model is modified by considering the vertical material proportion Cv. These findings are expected to establish a foundational framework for the optimizing of anisotropic lattice structures by remarkably enhancing their specific strength.

show abstract

Node-reinforced hollow-strut metal lattice materials for higher strength

Cited by 19 publications

References 23 publications

Compressive properties of AlSi10Mg lattice structures with novel BCCZZ and FCCZZ configurations fabricated by selective laser melting

Compressive properties of AlSi10Mg lattice structures with novel BCCZZ and FCCZZ configurations fabricated by selective laser melting

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Additive Manufacturing of Anisotropic TC4 Cubic Hollow‐Strut Lattice Structures with High Specific Yield Strength: Optimization, Properties, and Failure Modes

Contact Info

Product

Resources

About