论文标题
软拓扑晶格轮
Soft topological lattice wheels
论文作者
论文摘要
我们通过在不规则表面上的晶状体轮滚动的问题进行了贴图的软性拓扑极化的kagome晶格的较大变形和极端负载管理能力。我们通过将3D打印的拓扑晶格轮原型对局部和分布的边界负载进行实验测试。这项研究表明，与分布式载荷相比，在两个载荷方案之间的力转移中进行了二分法，从而使局部载荷被有限的应力渗透到散装中，而小力量转移到车轮轴上。通过数值模拟，我们将晶格轮与基线实心轮进行比较，以突出晶格配置提供的独特压力管理机会。这些发现促进了由拓扑机制启用的滚动物体的设计，在拓扑机制中，局部空当激活的柔软度可以与分布式载荷的全球僵硬响应共存，以确保可令人满意的承重功能。
We investigate the large deformation and extreme load-management capabilities of a soft topologically polarized kagome lattice mapped to a cylindrical domain through the problem of a lattice wheel rolling on an irregular surface. We test the surface-lattice interaction experimentally by subjecting a 3D-printed topological lattice wheel prototype to localized and distributed boundary loads. This investigation reveals a dichotomy in the force transfer between the two loading scenarios, whereby localized loads are absorbed with limited stress penetration into the bulk and small force transfer to the wheel axle, compared to distributed loads. Through numerical simulations, we compare the lattice wheel against a baseline solid wheel to highlight the unique stress management opportunities offered by the lattice configuration. These findings promote the design of rolling objects enabled by topological mechanics, in which a surplus of softness, activated by local asperities, can coexist with a globally stiff response to distributed loads that ensures satisfactory load-bearing capabilities.
