A review of the mechanical performance of honeycomb, gyroid, and grid infill patterns in a ۳D-printed FDM internal car mounting bracket

In recent years, fused deposition modeling (FDM) has been widely adopted in the automotive industry for rapid prototyping and low-volume production of interior components. One of the key parameters affecting the mechanical performance of FDM-printed parts is the internal infill pattern, which directly influences strength, weight, material consumption, and printing time. In this study, three commonly used infill patterns—Honeycomb, Gyroid, and Grid—were evaluated in the fabrication of an automotive interior mounting bracket. The component was designed in CAD software and analyzed using identical printing parameters for PLA, ABS, and PETG materials with different infill densities. Mechanical performance was assessed through compressive stress analysis, while weight and build time were also compared. The results indicated that the Gyroid pattern provided the best strength-to-weight ratio, Honeycomb achieved the highest compressive strength, and Grid resulted in the shortest printing time. These findings demonstrate that selecting an appropriate infill pattern can significantly improve the mechanical efficiency and production economy of FDM-printed automotive interior parts.

کلیدواژه ها:

FDM ۳D Printing ، Automotive Interior Components ، Infill Pattern Optimization ، Lightweight Design ، Mechanical Properties