Topic 3

Question 1

Concept Modeling - Types

Answer 1

Graphical (Drawings), Physical (3D Printing, Cardboard etc.), Virtual (CAD)

Question 2

Purpose of Modeling

Answer 2

To communicate ideas through a visual medium.

Question 3

Define: Prototype Vs. Mockup

Answer 3

Prototype: Tests some aspect of function

Mock-up: Communicates ideas but does not test function.

Question 4

Perspective Drawings - Types

Answer 4

1 point, 2 point, 3 point perspective

Question 5

2D Models

Answer 5

Orthographic, Flowchart, Presentation Drawing, Freehand

Question 6

Orthographic - Types

Answer 6

First & Third angle projections

Question 7

Define: Isometric Vs. Orthographic

Answer 7

Isometric: 3Dish image with consistent scale throughout
Orthographic: 2D flat image drawing of each side of the product.

Question 8

Define: Mockup

Answer 8

Scale/Full-sized, used for promotion or proportion not function.

Question 9

Define: Scale Model

Answer 9

Model built to scale

Question 10

Define: Aesthetic Model

Answer 10

Developed to look and feel like the final product.

Question 11

Define: Prototype

Answer 11

Built to test functionality

Question 12

Define: Instrumented Model

Answer 12

Measures performance using instruments

Question 13

Define: Fidelity

Answer 13

How close to the final product a model is

Question 14

CAD Modeling - Types

Answer 14

System: ie. how to order from Starbucks
Statistical
Surface: 3D model with no interior geometry
Solid: 3D model with interior geometry

Question 15

Define: Bottom-Up Vs. Top Down

Answer 15

Bottom-up: Different parts are different files

Top-Down: All parts are connected to each other’s geometry.

Question 16

FEA - Define

Answer 16

Finite Element Analysis: Used to judge structural security. of a digital model.

Question 17

Rapid Prototyping - Types

Answer 17

FDM: Fused deposition modeling, traditional plastic 3D printing
SLS: Selective Laser Sintering, uses lasers to harden layers of powder
LOM: Laminated object manufacturing, laminates layers. of paper/plastic together using heat.
Stereolithography: Resin printing, UV light hardens resin