Design Technology - Topic 3

Aesthetic Models

A model developed to look/feel like the final product

Animation

The ability to link graphic screens together in such a way as to simulate motion or a process

Bottom-up Modeling

Designer creates part geometry independent of the assembly or any other component. Once all parts are complete, they are brought together for the first time in the assembly

Computer Aided Design (CAD)

The use of computers to aid the design process

Conceptual Model

A model that exists in the mind used to help us know and understand ideas

Data Model

Model that determines the structure of data

Digital Human

Computer simulation of a variety of mechanical and biological aspects of the human bodyD

Fidelity

The degree to which a prototype is exactly like the final product

Finite Element Analysis (FEA)

The calculation and simulation of unknown factors in products using CAD systems

Formal Drawing Techniques

A type of drawing technique that has fixed rules

Fused Deposition Modeling (FDM)

A 3D printing technique that places layers of melted material on a bed to build up a 3D model

Graphical Models

A visualization of an idea, often created on paper or through software, in two or three dimensions

Haptic Technology

Emerging technology that interfaces the user via the sense of touch

Instrumented Models

Prototypes that are equipped with the ability to take measurements to provide accurate quantitative feedback for analysis

Laminated Object Manufacturing (LOM)

A system that virtually slices a 3D CAD model into thin layers, then cuts each layer from a roll of material using a laser or plotter cutter. Layers are then glued to create a 3D model

Mock-ups

A scale or full-size representation of a product used to gain feedback from users

Motion Capture

The recording of human and animal movement by any means (video, magnetic, electro-mechanical devices, etc.)

Part Drawings

Orthographic drawings of the components of an assembly containing details just about that component

Perspective Drawings

Set of formal drawing techniques that depicts an object as getting smaller and closer together the further away they are

Physical Modeling

The creation of a smaller or larger tangible version of an object that can be physically interacted with

Projection Drawings

Systems of drawings that are accurately drawn. The two main types are isometric and orthographic

Prototypes

Sample/model built to test a concept or process, or to act as an object to be replicated or learned from

Scale Drawings

Drawings that are bigger or smaller than the real product, but exactly in proportion with product

Scale Models

A model that is either a smaller or larger copy of an object

Selective Laser Sintering (SLS)

An additive manufacturing technique that uses a laser to fuse small particles of material into a mass that has a desired 3D shape

Sketches

Rough drawings of ideas used to convey or refine the idea

Solid Models

Clear representations of the final part that provide a complete set of data for the product to be realized

Stereolithography

Modeling technique that creates 3D models layer-by-layer by hardening molecules of a liquid polymer using a laser beam

Surface Model

Realistic pictures of the final model, offering some machining data that contain no data about the interior of the part

Top-Down Modeling

Product development process whose main feature is that the design originates as a concept and gradually evolves into a complete product consisting of components and sub-assemblies

Virtual Prototyping

Photorealistic CAD-based interactive models that use surface and solid modeling. “Digital mock-ups”

Virtual Reality (VR)

The ability to simulate a real situation on a screen and interact with it in a near-natural way

Working Drawings

Drawings used to guide the production of a product

Orthographic Drawings

Drawings that show the different sides of a product

Isometric Drawings

Drawings that show the shape and form of an object on a 30 degree, 90 degree, 30 degree plane