Page 53 - eBook_Proceedings of the International Conference on Digital Manufacturing V2

Enhanced Bending Strength of PLA Beams with Varied Lattice Infill Structures

and others comprised of TPMS. Maximum stress/mass was
generated in Hexagonal Honeycomb structure beam, showing
phenomenal behaviour and high resistance to deformation
whereas the minimum stress to mass ration was exhibited by
Triangular Honeycomb beam.

Table 7: Equations derived by the Regression analysis on the
data sets.

Lattice Stress – Strain-
Structure displacement displacement
Relation Relation

BCC = 0.0212
= 61.858 − 0.007
− 0.0003

FCC = 67.947 = 0.0210
− 0.0103 − 7 × 10
−7
Kelvin = 65.674 1.0001 = 0.0206 1.0001

Octet = 70.963 = 0.0233
− 0.4381 − 0.0035

HX HC = 131.91 1.0001 = 0.0498

TRI HC = 52.20 = 0.0166

Fluorite = 61.350 = 0.0189

Diamond = 58.205 = 0.0181

Gyroid = 54.855 = 0.0171
− 0.2909 + 1 × 10
−4

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