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Models and Prototypes

Models and Prototypes. Prof. Paul Kurowski. This is a group assignment, only one copy per team should be submitted Where to submit? To the studio locker in TEB on the second floor. Prototype definitions.

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Models and Prototypes

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  1. Models and Prototypes Prof. Paul Kurowski

  2. This is a group assignment, only one copy per team should be submitted Where to submit? To the studio locker in TEB on the second floor

  3. Prototype definitions A prototype is an original type, form, or instance of something serving as a typical example, basis, or standard for other things of the same category. http://en.wikipedia.org/wiki/Prototype

  4. Models and Prototypes • Abstractions and simplifications of final design as needed to demonstrate, test and refine a design • Physical prototypes are needed to demonstrate, test and refine a design

  5. Prototype Goals

  6. Types of Prototypes 1 Proof-of-Principle Prototype Form Study Prototype Visual Prototype Functional Prototype http://en.wikipedia.org/wiki/Prototype

  7. Virtual (CAE) CAD models Mathematical models Numerical models Physical Proof-of-concept Industrial design Experimental Alpha Beta Pre-production Types of Prototypes 2

  8. Why CAE? TRADITIONAL PRODUCT DESIGN PROCESS SIMULATION DRIVEN PRODUCT DESIGN PROCESS DESIGN CAD CAE solid CAD FEA PROTOTYPING PROTOTYPING TESTING TESTING affordable computers Windows OS PRODUCTION PRODUCTION CAE tools are implemented to move design iterations from physical prototypes to virtual space of numerical (computer) models

  9. Mathematical model Vibration of a single degree of freedom system

  10. Numerical model Motion of a mechanism

  11. Numerical model Modes of vibration of a tuning fork

  12. Numerical model Modes of vibration of a pumpkin

  13. Virtual (CAE) CAD models Mathematical models Numerical models Physical Proof-of-concept Industrial design Experimental Alpha Beta Pre-production Types of Prototypes

  14. Demonstrate feasibility Simple construction Often only a part or subsystem Usually not fully functional! Not sufficient for design validation! Proof-of-concept Prototypes http://me118.stanford.edu/pictures/Win01Projects/TooShort/images/2nd%20prototype.JPG

  15. How will the product look and feel? Simple materials (foam, wood, etc.) Usually non-functional Industrial Design Prototype http://www.linternaute.com/auto/mondial-automobile-concept-car/audi-rsq3.jpg

  16. Industrial Design Prototype 1962 Prototype of Lunar Module

  17. Intended for physical experiments and testing Often only a subsystem Experimental Prototype Prototype of shock-absorbing caster Test results

  18. Alpha Prototype • Include most but not all functions of the final design • Answer questions about overall layout of the design http://drwho.virtadpt.net/pictures/memorial-day-2004/apple-prototype.jpg

  19. Fully functional prototype Final product form Purpose is final testing Different manufacturing processes used Machining rather than injection molding Made by hand Beta Prototype

  20. Pre-Production Prototype • Made using final production processes and tooling • Identical to the final product • Used to fine-tune the production process Pre-production Prototype http://www.dpreview.com/articles/canoneos5d/

  21. Prototype Goals • Answer simple questions (e.g. will an idea work?) • Obtain feedback from customers • Aid in visualization • Provide realistic models for marketing and advertising • Study the “look and feel” of the product • Functional testing and evaluation

  22. Prototype Construction in ES1050 • Inexpensive • Easy • No special tools • Quick http://www.ben.com/LEGO/rcx/picoscout/breadboard.jpg

  23. Common Prototyping Materials in ES1050 • Wood • Plastic • Plexiglass • Cardboard and paper • Metal http://www.riscx.com/pyramac/proto_pics/proto_3_600.jpg

  24. Prototyping Tools in ES1050 • Simple hand tools • Scissors • Screwdrivers • Wrenches • Simple joining methods • Glue • Duct tape • Screws

  25. Construction kits you may want to use in ES1050 • Lego • Meccano • Others http://www.sentex.net/~mwandel/legos/legos.html

  26. Many mechanical and electrical parts Inexpensive and easy No tools required Lego http://www.hamster.dk/~purple/robot/iBOT/lego_robot_prototype.jpg http://www.cs.rhul.ac.uk/eca/micromouse/lego/shakey/images/parts.jpg

  27. Uses metal parts Simple tools Meccano www.meccano.com http://webperso.easyconnect.fr/esteve.jeanmax/j.e.o/fotopi%E8ces/MarklinPiecP.jpg

  28. Creates a physical prototype directly from a CAD model Can include color Uses low-strength materials Rapid Prototyping is available to ES1050 www.zcorp.com

  29. Rapid Prototyping www.zcorp.com

  30. Rapid Prototyping

  31. Types of prototypes commonly used in ES1050

  32. ES050 Prototypes in 2006/2007when the main Design Project was to “Demonstrate a Scientific Principle”

  33. Select the incorrect statement about a prototype A Does not have to be in the natural size B Does not have to convey the essential design idea C Can be material or virtual D Can be made using simplified manufacturing processes E Does not have to look identical as the indented final design

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