) and energy absorption efficiencies up to 44%, at stresses as high as 410 MPa. Material work hardening is key to this breakthrough performance, as it raised the plateau stress of the plate buckling failure to approximately the same level as the stretch-dominated elastic limit, which allowed ultrahigh stiffness to be united with excellent energy absorption characteristics in these mechanical metamaterials.
Lim et al. (Thu,) studied this question.
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