A Design Methodology for Additive Manufacturing–Fused Deposition Modeling Case Study

Additive manufacturing (AM), also known as 3D printing, is a process of creating physical objects directly from digital 3D models by adding material layer by layer.Unlike conventional manufacturing methods-such as subtractive machining or injection molding-which remove material or shape it within molds, AM builds parts incrementally, typically using heat, lasers, or electron beams to bond each layer.Among the seven standardized AM processes, Fused Deposition Modeling (FDM) is the most widely used.FDM works by heating and extruding thermoplastic filaments to form successive layers of a part.While AM offers unique advantages such as complex geometries, lightweight structures, and customization, it also introduces specific design constraints that differ from traditional manufacturing.This paper reviews key design challenges associated with AM, with a focus on FDM, and evaluates current methodologies developed to address these issues.A new design methodology is proposed to optimize part design according to specific machine and material constraints, leveraging the advantages of AM while minimizing its limitations.This approach ensures that designs are not only manufacturable but also meet performance requirements and are optimized for the given specifications.A case study applying this methodology to the FDM process highlights its effectiveness and suggests pathways for further improvements.The findings offer insights into how the new approach can contribute to future research and development in AM design optimization.