# Function-Based Design Principles for Additive Manufacturing
## 3 Design Principles for Additive Manufacturing
\begin{table}
\begin{tabular}{p{14.2 pt} p{284.5 pt}} \hline \hline \# & \multicolumn{2}{c}{**Design Principles for AM**} \\ \hline \multirow{3}{*}{\#DP1} & **Fit user by using custom ergonomic geometry** \\  & AM enables manufacturing of complex and curved geometry. Furthermore, each product manufactured with AM can have different geometry. Therefore, the geometry in interaction with the user can be easily customised for an individual user or different groups of users to provide an optimum ergonomic. \\ \hline \multirow{3}{*}{\#DP2} & **Absorb energy by using lattice structures** \\  & AM enables easy manufacturing of lattice structures, on multiple levels of hierarchy, through the entire geometry or only in part of the geometry. The lattice structure can absorb energy through elastic or plastic movement, deformation, or breakage. \\ \hline \multirow{3}{*}{\#DP3} & **Absorb energy by using elastic material** \\  & AM can process a variety of materials with different material properties. Create structures using a material with adequate elasticity to absorb energy. \\ \hline \multirow{3}{*}{\#DP4} & **Enhance interaction with environment by customising surface texture** \\  & With AM, it is relatively easy to manufacture different patterns and textures embedded in the surface of the product. Create customised textures to ensure good grip and interaction with the environment. \\ \hline \multirow{3}{*}{\#DP5} & **Enhance interaction with environment by using customised surface features** \\  & With AM, it relatively easy to manufacture small 3D features on the surface of the products. Create custom features to provide an adequate interaction with the environment. \\ \hline \multirow{3}{*}{\#DP6} & **Enhance interaction with environment by integrating standard geometry** \\  & AM can be used to create simple shapes, replicate existing geometry, and integrate multiple features in a single design. Utilise this possibility of AM and integrate a standard geometry (e.g., threads, bores) into a design to enable interaction with the environment and connection with other products. \\ \hline \multirow{3}{*}{\#DP7} & **Enhance interaction with environment by using custom geometry to fit the use case** \\  & AM enables easy customisation of geometry. Customise geometry for the particular use case to enable interaction with the environment and direct fit with the geometry of other components. \\ \hline \multirow{3}{*}{\#DP8} & **Enhance fluid performance by using customised surfaces** \\  & AM can manufacture complex shapes. Use this possibility of AM when interacting with fluids to create surfaces whose shape will be in accordance with fluid dynamics to increase the overall performance. \\ \hline \multirow{3}{*}{\#DP9} & **Enhance fluid performance by using integrated internal channels** \\  & AM enables the creation of complex internal geometry. Use the custom internal channels whose shape will be in accordance with fluid dynamics for guiding and distributing fluids to increase the overall performance. \\ \hline \multirow{3}{*}{\#DP10} & **Enhance material/energy conversion by shaping internal chamber for the use case** \\  & AM enables the creation of complex internal geometry. Create custom internal chambers with geometry that will be adjusted for a particular physical process happening inside the chamber, such as energy or material conversion. \\ \hline \hline \end{tabular}
\end{table} 
Table 1: List of derived DPs for AM.