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Nonlinear Wave Dynamics of Origami-Based Mechanical Metamaterials

机译:基于折纸的机械超材料的非线性波动力学

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We examine the potential use of origami structures, especially the Tachi-Miura Polyhedron (TMP) which is an origami bellows structure, as mechanical metamaterials. Focusing on the kinematics of its folding, we show that the TMP has unique characteristics, e.g., The Poisson's ratios change from positive to negative depending upon the crease pattern. In addition, we introduce a torsion spring to model the crease line of the TMP in order to study nonlinear wave dynamics. We derive analytical expression of the crease line's motions, where the folding behavior of the crease line provides nonlinear force-displacement responses both in compression and tension. These unusual characteristics lead to potential applications in impact absorption or energy transportation.
机译:我们研究了折纸结构的潜在用途,特别是作为折纸波纹管结构的Tachi-Miura多面体(TMP)作为机械超材料。着眼于折叠的运动学,我们显示TMP具有独特的特征,例如,泊松比根据折痕样式从正变为负。另外,我们引入了扭力弹簧来建模TMP的折线,以研究非线性波动力学。我们得出折痕线运动的解析表达式,其中折痕线的折叠行为提供了压缩和拉伸方面的非线性力-位移响应。这些不寻常的特性导致在冲击吸收或能量传输中的潜在应用。

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