Tachi-Miura Polyhedron 실린더 구조에서의 비선형 탄성파 전파 특성에 관한 연구

Abstract

The nonlinear wave dynamics of origami-based mechanical metamaterials composed of a Tachi-Miura polyhedron (TMP) pattern is investigated. The TMP unit cell shows strain-softening behavior under compression. This behavior can be tuned by modifying its geometrical configurations or initial folded conditions. To analyze the effect of the strain-softening behavior on elastic wave propagation in a TMP cylinder structure, we construct a finite element model and conduct numerical analysis. Numerical simulations show that compressive waves, induced due to impact load, are attenuated due to the nonlinear characteristics of the TMP unit cell. We also investigate the effect of the initial folded condition on the nonlinear wave dynamics.