In recent years, and with the continual development of additive manufacturing technologies, mechanical metamaterials have been explored for their programmable nature. This has opened a new design space into mechanical devices that utilise the structure of a material to perform a function, otherwise known as functional materials. Several examples of functional materials performing mechanical Boolean logic have been successfully demonstrated in the past. Previous designs were shown to have a limited number of gate configurations due to device operation occurring in a single plane. In this paper, a novel approach in performing AND and OR mechanical logic is successfully demonstrated. The proposed mechanical metamaterial controls the buckling response of a biased Von Mises Truss through actuation of anisotropic 3D unit cells to perform Boolean logic. It is shown, by changing the separation distance between unit cells, the functional material can behave as an AND/OR gate. Actuation of the unit cell changes the effective beam length of the bistable system, allowing a snap-through response to occur. By changing the orientation of the 3D unit cells, the input direction must also be considered for a snap-through response. The mechanical logic gates demonstrated are multi-plane, as the correct plane of actuation and input sequence are required for an output to occur.

近年来，随着增材制造技术的不断发展，机械超材料已因其可编程性而得到了研究。这就为机械设备打开了新的设计空间，这些设备利用材料的结构来执行功能，也就是所谓的功能材料。过去已成功演示了执行机械布尔逻辑的功能材料的几个示例。由于在单个平面上发生器件操作，先前的设计显示出具有有限数量的门配置。在本文中，成功地演示了一种执行“与”或“或”机械逻辑的新颖方法。所提出的机械超材料通过驱动各向异性3D晶胞来执行布尔逻辑，从而控制了偏向冯·米塞斯·特鲁斯的屈曲响应。如图所示，通过改变晶胞之间的间隔距离，功能材料可以充当与/或门。晶胞的致动改变了双稳态系统的有效光束长度，从而允许发生快速响应。通过更改3D单元的方向，还必须考虑输入方向以实现快速响应。所展示的机械逻辑门是多平面的，因为要发生输出，需要正确的驱动平面和输入顺序。输入方向也必须考虑到快速响应。所展示的机械逻辑门是多平面的，因为要发生输出，需要正确的驱动平面和输入顺序。输入方向也必须考虑到快速响应。所展示的机械逻辑门是多平面的，因为要发生输出，需要正确的驱动平面和输入顺序。