, On the other hand, curves of the applied load normalized by the Euler load for the column vs. axial compressive deformation are presented in Figure 3b. Comparing curves of identical color in Figure 3b shows that at equal macro-slenderness ratio (i.e. N m ) the post-buckling response is dependent on lower-scale microstructure

, The study combines numerical simulations with compressive testing of 3D printed polymer structures. Results to date show that: ? Lower scale micro-structure is found to trigger instability at the macro-scale, the latter being characterized by long-and short-waviness, Conclusions We have studied buckling instability of architectured columns

, Within the accuracy of data to date, experimental trends are consistent with the numerical results

, The macroscopic critical load is microstructure dependent and a continuum approach is observed to yield predictions far from experimental and numerical values

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