1. Solid modeling:

Introduction: This represents the volume of the object, not just its surface. It includes the internal structure of the object.

Applications: Ideal for creating detailed and precise parts and assemblies. Used extensively in engineering and manufacturing for designing machinery, automotive parts, and complex assemblies.

2. Parametric Modeling:

Introduction: Application parameters and constraints to define the model's geometry. Changes to parameters automatically update the model.

Applications: Allows for easy modifications and design iterations. Essential in CAD for mechanical design where precision and the ability to make quick adjustments are critical.

3. Surface Modeling:

Introduction: FocApplications on Defining the Exterior Surfaces of a 3D Object. It can create complex and smooth surfaces.

Applications: Used in designing parts with complex, organic shapes, such as automotive body panels, consumer products, and ergonomic parts.

4. Sheet metal modeling:

Introduction: This is a specialized type of modeling for designing sheet metal parts that can be unfolded into flat patterns for manufacturing.

Applications: Used for creating enclosures, brackets, and other parts fabricated from sheet metal.

5. Direct modeling:

Introduction: Allows for direct manipulation of the model geometry without relying on a feature history.

Applications: Useful for quick edits and modifications, especially in cases where the design history is complex or not available.


6. Assembly Modeling:

Introduction: This involves creating a model consisting of multiple parts assembled.

Applications: Critical for understanding how different parts interact, fit together, and move about one another. Used for machinery, automotive assemblies, and complex mechanical systems.


These types of 3D modeling are integral to the mechanical design process, enabling engineers to create accurate, functional, and manufacturable designs.