由梁或杆等结构单元组成的二维点阵超结构材料广泛应用于不同的技术领域, 其重要的特点是通过单胞结构的设计可以显示许多传统材料不具备的独特力学行为. 本文简要综述此类材料弯曲变形研究的近期进展, 着重聚焦于非常规的弯曲模式和主导机制以及相应的连续统理论模型, 并对所面临的主要问题和挑战作了展望.

2D lattice metamaterials composed of beams or rods are widely used in different technical fields. An important feature of such materials is that, through structural design of the unit cells, they can exhibit many unique mechanical behaviors that traditional materials do not have. In this review, recent advances in the study of bending deformation of lattice metamaterials are briefly summarized, with emphasis on the unconventional bending modes and dominant mechanisms, as well as the corresponding theoretical models of the continuum. The main problems and challenges in future research are also prospected.