CAD Modelling and Design Development
Definition
Computer Aided Design (CAD)
CAD (Computer Aided Design) refers to the use of computer software to create, modify, and communicate design ideas with precision.
Types of CAD Models
- Surface models
- Solid models
- Virtual models
Surface Models
Definition
Surface CAD Models
Digital 3D models that represent only the external surfaces of an object, without defining its internal structure or volume.
- Characteristics:
- Lightweight: Surface models require less computational power.
- Flexible: Ideal for complex curves and organic shapes.
- Applications:
- Automotive and aerospace design: Analysing aerodynamics.
- Consumer products: Focusing on aesthetic appeal.
Surface models are not suitable for structural analysis or manufacturing as they lack internal volume and material properties.
Solid Models
Definition
Solid CAD Models
Digital 3D models that provide a complete representation of an object, including its external form, internal structure, and material properties.
- Characteristics:
- Comprehensive: Includes volume, mass, and material data.
- Accurate: Suitable for engineering analysis and manufacturing.
- Applications:
- Mechanical engineering: Designing functional components.
- Architecture: Creating detailed building models.
