AM Needs MEs

作者：Simpson Timothy W^*

来源：Mechanical Engineering, 2015, 137(8): 30-35.

DOI：10.1115/1.2015-aug-1

<jats:p>This article discusses how mechanical engineers can help in filling the gaps in additive manufacturing technology. Traditionally, mechanical engineers have designed parts by selecting a material with the best known properties and then creating the shape they want. With additive manufacturing, the process is reversed. The shape is first printed, and then other processes are completed later. Every step of the process has numerous unknowns right now, and the tools, methods, and fundamental understanding needed to answer these questions do not exist. Modeling laser-powder interactions is difficult, especially since the physics and heat transfer phenomena are not fully understood in additive manufacturing systems, particularly powder-bed fusion systems. The models and simulations that have been created are computationally expensive and still undergoing validation and verification. Models are also needed to predict the residual stresses that will result and distortions that will occur. In short, mechanical engineers have a lot of work to do to help additive manufacturing reach its full potential.</jats:p>

• 出版日期2015-8