Iliev Pavel S, Wittel Falk K, Herrmann Hans J
ETH Zurich, Computational Physics for Engineering Materials, Institute for Building Materials, Stefano-Franscini-Platz 3, 8093, Zurich, Switzerland.
ETH Zurich, Complex Materials and Systems, Institute for Building Materials, Stefano-Franscini-Platz 3, 8093, Zurich, Switzerland.
Eur Phys J E Soft Matter. 2021 Apr 24;44(4):58. doi: 10.1140/epje/s10189-021-00053-6.
Freestanding columns, built out of nothing but loose gravel and continuous strings can be stable even at several meters in height and withstand vertical loads high enough to severely fragment grains of the column core. We explain this counter-intuitive behavior through dynamic simulations with polyhedral rigid particles and elastic wire chains. We evaluate the fine structure of the particle contact networks, as well as confining forces and reveal fundamental intrinsic differences to the well-studied case of confining silos.
仅由松散砾石和连续绳索构建而成的独立柱体，即便高达数米也能保持稳定，承受足以使柱芯颗粒严重破碎的垂直载荷。我们通过使用多面体刚性颗粒和弹性金属丝链进行动态模拟来解释这种违反直觉的行为。我们评估了颗粒接触网络的精细结构以及围压，并揭示了与经过充分研究的筒仓围压情况的根本内在差异。
