Abstract Scope |
This work presents an attempt to employ analytical modeling-based approach for the estimation of the effect of anisotropic material properties on cellular structures of multiple unit cell topology designs. Three different unit cell designs that represent different design rules, including re-entrant auxetic, BCC and octahedral, were investigated in this study in order to identify generic characteristics. A direct stiffness matrix-based model was employed for the adequate capturing of the finite-size effect of the cellular patterns. The anisotropic material property baseline was conveniently established experimentally via tensile testing of strut coupons fabricated via electron beam powder bed fusion (EB-PBF). Subsequently, cellular structure samples were fabricated also using EB-PBF and subjected to static compressive mechanical testing in order to verify the model. The results suggested good modeling accuracy, and provided additional insights into the different material anisotropy effects with different cellular structure topology designs. |