Page 56 - eBook_Proceedings of the International Conference on Digital Manufacturing V2
P. 56

Proceedings of the International Conference on Digital Manufacturing –
                                         Volume 2

               Honeycomb (TRI HC) lattice structure showed good structural
               stability and overall mechanical property balance. We concluded
               that TRI HC, being 70% porous and light in weight, has good
               mechanical  strength.  This  is because  the  underlying structural
               strength of  Triangular Honeycomb Lattices makes its struts
               effectively distribute  the  loads on both the upper  and lower
               surfaces of the beam.

                  In conclusion, the TRI  HC lattice structure has a good
               combination of mechanical properties (Shah & Kapania, 2020)
               such as a balanced strength and weight, and linear deformation
               behaviour. Although it might not possess  the  lowest absolute
               stress  value, its overall performance indicates that it is a good
               candidate for application in lightweight structural purposes. The
               gyroid lattice also holds potential because it has a consistent stress
               distribution and energy absorption. More studies may investigate
               the long-term  behaviour  of these structures when subjected to
               cyclic loading and  determine  the influence of various material
               pairs.


               REFERENCES

               Chopra,  P.  (2011).  Effective  mechanical  properties  of  lattice
                    materials. University of British Columbia.
               Dong, Z., & Zhao, X. (2021). Application of TPMS structure in
                    bone regeneration. Engineered Regeneration, 2, 154–162.
               Garcia-Granada, A., Catafal-Pedragosa, J., & Lemu, H. G. (2019).
                    Topology  optimisation through stiffness/weight  ratio
                    analysis for a  three-point bending test of additive
                    manufactured parts. In  IOP Conference Series:  Materials
                    Science and Engineering. IOP Publishing.
               Giglio, M., Gilioli, A., & Manes, A. (2012). Numerical
                    investigation of a three point bending test on sandwich panels
                    with aluminium skins and Nomex™ honeycomb  core.
                    Computational Materials Science, 56, 69–78.
               He, M., & Hu, W. (2008). A study on composite honeycomb
                    sandwich panel structure. Materials & Design, 29(3), 709–
                    713.




                                              40
   51   52   53   54   55   56   57   58   59   60   61