virtual modelling

Question 1

virtual modelling

Answer 1

• use of 3D CAD files to simulate aspects of the performance of products before they are manufactured
• CAM processes can be simulated to ensure error-free machining

Question 2

computational fluid dynamics (CFD)

Answer 2

• 3D CAD simulation tool for fluid or gas flow in or around a product
• vehicle drag can be tested in a simulated wind tunnel
• test results inform aerodynamic improvements
• saves time and money that is normally needed for physical testing

Question 3

finite element analysis (FEA)

Answer 3

• analysis of stress in elements
• allows simulation of forces, vibration or shock loads on products or components
• weak points are highlighted
• money and time can be saved as designs can be optimised by modification and retesting
• static and dynamic testing

Question 4

rapid prototyping

Answer 4

• use of machines to produce a realistic 3D model from a CAD file
• made from a range of materials

Question 5

advantages of rapid prototyping

Answer 5

• fast process as little human input
• inexpensive
• does not require high level of skill
• can serve as moulds for casting and making production dies
• easy to communicate ideas to client