3 papers
cond-mat.soft2019
Architected Lattices with Adaptive Energy Absorption
Yifan Wang, Brian Ramirez, Kalind Carpenter +3
Energy absorbing materials, like foams used in protective equipment, are able to undergo large deformations under low stresses, reducing the incoming stress wave below an injury or…
cond-mat.soft2018
Energy Absorption and Low Velocity Impact Response of Open-Cell Polyurea Foams
Brian J. Ramirez, Vijay Gupta
The energy absorption and impact attenuation of low density polyurea (PU) foams (140 - 220 kg/m3) is presented. The stress-strain behavior, energy absorption, cushioning efficiency…
cond-mat.soft2018
Shape-morphing architected sheets with non-periodic cut patterns
Paolo Celli, Connor McMahan, Brian Ramirez +5
We investigate the out-of-plane shape morphing capability of single-material elastic sheets with architected cut patterns that result in arrays of tiles connected by flexible hinge…