Buckling response of architectured columns: controlling instability across the scales through a rational design.

Gabriella Tarantino (1) , Matthieu Caruel (1) , Kostas Danas (1)

1 LMS - Laboratoire de mécanique des solides

In the present study, we combine numerical simulations with compressive testing of 3D printed polymer structures to investigate the buck ling response of a slender column, whose architecture employs unit-cell lattices which in turn consist of a sequence of columns uniformly spaced. The lower-scale columns are both of comparable size with the macro-geometry and a priori susceptible to buckling. Within the accuracy of data, the experimental trends are consistent with the numerical simulations and show that both the buckling and the post-buckling response at the macroscopic (i.e. continuum) level are dependent on the lower-scale microstructure.

Mots clés: Bifurcation; Architectured columns; Instability

Domaines: Mécanique des structures [physics.class-ph]

Gabriella Tarantino, Matthieu Caruel, Kostas Danas. Buckling response of architectured columns: controlling instability across the scales through a rational design.. 13e colloque national en calcul des structures, Université Paris-Saclay, May 2017, Giens, Var, France. ⟨hal-01899349⟩