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.

我们研究了通过在不规则表面上滚动的晶格轮问题将软拓扑极化的kagome晶格映射到圆柱域的大变形和极限载荷管理能力。我们通过对3D打印的拓扑晶格轮原型进行局部和分布的边界载荷实验性地测试了表面-晶格的相互作用。这项研究揭示了两种载荷情况之间力传递的二分法，与分散载荷相比，局部载荷被吸收，应力被渗透到主体中的力有限，力传递到轮轴的力很小。通过数值模拟，我们将晶格轮与基准实心轮进行比较，以强调晶格配置提供的独特应力管理机会。