Dynamics of lattice structures

格子结构无处不在：从蜜蜂窝中六边形细胞的规则排列到屋顶桁架和燃气轮机叶片。它们的特征都是一个在一维、二维或三维空间中线性或循环地重复自身的单位。近五年来，微结构金属桁架晶格材料的概念引起了材料力学界的广泛关注。这些努力的核心目标是在所有金属和复合材料结构中实现具有高比刚度和强度的定制晶格结构。这种结构在航空航天和汽车工业中有应用。今天，工程师们能够在计算机中“编写”复杂的三维晶格图案，并将其转化为制造部件，这要归功于激光微加工、微印刷和软光刻等现代制造技术。由于微电子工业的发展，这是可能的。

Lattice structures are ubiquitous: from the regular arrangement of hexagonal cells in the brood of a honey bee to roof trusses and gas turbine blades. They are all characterized by a unit that repeats itself either linearly or cyclically in one, two, or three-dimensions. The notion of micro-architectured metallic truss lattice materials has received wide interest among the mechanics of materials community over the past five years. Central to these efforts is the goal to achieve tailored lattice architectures with high specific stiffness and strength in all metallic and composite structures. Such structures have applications in aerospace and automotive industries. Today, engineers are in a position to 'write' complex three dimensional lattice patterns in a computer which will be translated to a manufactured component, thanks to modern manufacturing techniques such as laser micromachining, micro printing, and soft lithography. This is possible due to the developments in microelectronics industry.