What type of modeling does Fusion 360 primarily employ for mechanical design?

Fusion 360 primarily employs parametric modeling for mechanical design, which is a method that allows users to create 3D models using parameters and constraints. This approach enables designers to define features and relationships between different parts of a model, making it easier to modify and adapt the design as new requirements arise. By using dimensions and constraints, users can ensure that any changes made to one feature automatically update related features, fostering a dynamic interaction between various design elements.

This capability is particularly useful in mechanical design, where precision and the ability to revise designs rapidly are crucial. Parametric modeling also facilitates collaboration within teams, as any changes can be traced back to the parameters that govern them, allowing for better communication and understanding of design intent.

The other modeling types, while beneficial in specific contexts, don't offer the same level of adaptability and structured control over design changes as parametric modeling does. Direct modeling allows for more freeform edits but lacks the associativity that parametric modeling provides. Surface modeling focuses on creating complex surfaces rather than functional solid mechanics. Polygon modeling, typically used in mesh-based designs, is not conducive for precision engineering, which is essential in mechanical design.