论文标题
3D通过材料挤出在声床上的材料打印
3D Printing via material extrusion on an acoustic air bed
论文作者
论文摘要
添加剂制造（例如3D打印）为复杂的三维物体的快速原型制作提供了无与伦比的机会，但通常需要同时建立固体支撑物以最大程度地减少变形并确保与打印面接触。在这里，我们从理论上和实验地研究了“空气床”上材料挤出的概念，这是一个明智地设计的声场，通过非接触式辐射力支持材料。我们研究了三乳酸丝（PLA）的动力学，这是一种在3D打印中常用的材料，因为它在挤出过程中与声势相互作用。我们开发数值模型来确定最佳的换能器布置和打印条件，并构建并演示了一个集成了商业3D打印机和开源控制代码的概念原型。我们的结果表明，具有潜在益处的替代，非接触式支撑机制，例如表面缺陷，材料废物较少，成本较低和制造时间减少。随着增材制造继续发展成为工程及其他领域的基础工具，这些功能可能变得至关重要。
Additive manufacturing, such as 3D printing, offers unparalleled opportunities for rapid prototyping of complex three-dimensional objects, but typically requires simultaneous building of solid supports to minimize deformation and ensure contact with the printing surface. Here, we theoretically and experimentally investigate the concept of material extrusion on an "air bed", a judiciously engineered acoustic field that supports the material by contactless radiation force. We study the dynamics of polylactic acid filament (PLA), a commonly used material in 3D printing, as it interacts with the acoustic potential during extrusion. We develop numerical models to determine optimal transducer arrangements and printing conditions, and we build and demonstrate a concept prototype that integrates a commercial 3D printer and open-source control code. Our results point towards alternative, contactless support mechanisms with potential benefits such as fewer surface defects, less material waste, lower cost, and reduced manufacturing time. These features could become crucial as additive manufacturing continues to evolve into a foundational tool in engineering and beyond.
