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Definition
| multiple views each showing 2 of 3 dimensions |
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| single view with all three dimensions presented |
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| center line, hidden line, extension line, dimension line, visible line |
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| one way to visualize multiview projections: |
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| standard projection of U.S. drawings: |
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Term
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Definition
| imaginary ray between object and observers eye |
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Definition
| plane upon which the LOS is projected |
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Term
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Definition
1. Determine H, W , D
2. Box in Views
3. Proportion Features and project
4. add circular views
5. darken outlines
6. add center lines |
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Term
| 3 main parts of design process: |
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Definition
1. Conceptual Design
2. Preliminary Design
3. Detailed Design |
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Term
| Problem Definition of Design Process: |
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Definition
1. clarify objectives
2. establish user requirements
3. identify user constraints
4. establish functions |
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Definition
| desired attributes or behaviors |
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| strict limits the design must meet |
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| successful actions the design must perform |
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Definition
| ways to execute your functions |
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Term
| What is an Objective Tree? |
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Definition
| graphical representation of objectives list |
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Term
| How to create and Objectives List: |
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Definition
1. create list of of responses to problem
2. remove miscellaneous stuff
3. group similar objectives
4. created indented outline of hiearchy
5. identify similar objectives |
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Term
| Pairwise comparison chart: |
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Definition
1. Directly compare 2 objectives
1 more important 0 less important
2. compare objectives from common node, at same sublevel |
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Term
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Definition
-select among design alternatives
- how well objectives are met |
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Term
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Definition
1. Identify units and scale
2. Identify means of assessing value( survey or design)
3. Evaluate if measurement and evaluation is feasible |
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Term
| Performance Specifications |
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Definition
| how well design performs required functions |
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Term
| when generating alternative designs: |
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Definition
1. know what already exists
2. breakdown into subcategories ( use morphological shart)
3. brainstorm ( 6 3 5 ) |
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Term
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Definition
| develop concepts for each functions |
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Term
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Definition
1. timeline
2. workbreakdown structure
3. gantt chart |
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Term
| Work Break Down Structure |
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Definition
hiearchial breakdown of project tasks
- breakdown tasks into smaller more manageable tasks |
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| Linear Responsibility Chart |
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Definition
| task responsibility of each individual |
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Term
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Definition
| project deadlines and schedules |
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Definition
| highlights prescendent relationships among project tasks |
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Definition
| graphical representation of timing of project tasks |
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Term
| View Selection and Presentation: |
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Definition
-views for best shape
-least number of hidden lines
-space between views for dimensions
-most descriptive features |
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Term
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Definition
-label surfaces
-number vertices
-create physical models
-study multiview drawings
-solve missing line problems |
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Term
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Definition
1. Visible
2. Hidden/Cutting Plane
3. Center |
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Term
| line in a multiview represents: |
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Definition
-edge view of a plane
-non tangential intersection lines
-limit of curved feature |
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Term
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Definition
1. normal
2. inclined
3. oblique |
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Term
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Definition
parallel to one of standard viewing planes
-looks like edge in other views |
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Term
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Definition
-perpendicular to one of standard planes
-forshortened in other views |
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Term
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Definition
| not parallel or perpendicuar to any standard view |
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Term
| when feature is not parallel to projection plane: |
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Definition
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| indicates extent of dimension |
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Definition
| indicates circular symmetry |
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Term
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Definition
| inclined line tying note to a feature |
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Term
| Dimensioning conventions: |
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Definition
- english, assume inches
- metrics, assume millimeters
- no units |
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Term
| Principles of good dimensioning: |
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Definition
-include sufficient dimensions
-dimension each feature once
-dont dimension hidden lines if possible
-avoiding dimensioning inside object
-dimension holes in circular view
-dimension cylinders in rectangular view
-dimension arcs>180 diameter, arcs <180 radius
-extension lines should not touch object
-extension lines should not cross dimension lines |
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Term
| Problem Definition Stages: |
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Definition
1. Problem Definition
2. Project Framework
3. Project Scheduling
4. Project Tracking and Evaluation |
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