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Design and Modeling

Design and Modeling. Ten-Stage Design Process. What Is Engineering Design?. “Engineering Design is the process of designing a system, component, or process to meet a desired need.” (Gomez et al 349). Engineering Design cont. Continuous process Can be short and simple, or

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Design and Modeling

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  1. Design and Modeling Ten-Stage Design Process

  2. What Is Engineering Design? • “Engineering Design is the process of designing a system, component, or process to meet a desired need.” (Gomez et al 349)

  3. Engineering Design cont. • Continuous process • Can be short and simple, or complex and in-depth processes • Used for: • Ongoing manufacturing processes • One-time designs

  4. Significant Factors • Functionality • Quality • Safety • Ergonomics • Appearance • Environmental Considerations • Economics Tacoma Narrows Bridge Disaster http://www.enm.bris.ac.uk/research/nonlinear/tacoma/tacoma.html

  5. Ten-Stage Design Process • Begins with appointment of project manager • Responsible for oversight of project • Recruitment of team members of various backgrounds and expertise

  6. Stage 1: Identify the Problem/ Product Innovation • Establish the Problem • Identify information sources to understand problem’s scope and nature • Develop a preliminary, formal problem statement • All correct issues and backgrounds have been explored

  7. Establish preliminary goals Act as focal points throughout process Determine working criteria Develop process goals Checkpoints for progress Example Working Criteria Questions Costs? Production Difficulty? Size, Weight, Strength? Appearance? Ease of Use? Safe to Use? Legality Concerns? Reliable & Durable? Stage 2: Define the Working Criteria and Goals

  8. Stage 3: Research & Gather Data • All problem aspects explored with good, reliable background information • What information is needed • Best sources for information • Organization is key

  9. Stage 3: What Info is Needed? • Published info on problem? • Availability of existing solution? • Who is providing info? • Advantages and disadvantages to solution. • Costs? • Significant issue? • Ratio of time spent compared to overall costs. • Legal issues? • Environmental concerns considered?

  10. Stage 3: Sources for Information Trade Journal • Libraries • Professional Associations • Trade Journals and Publications • Newspapers and Magazines • Market Assessment Surveys • Government Publications • Patent Searches and Listings • (www.uspto.gov) • Competition’s Products http://cronos.rutgers.edu/~weng/journals/jemt.html

  11. Stage 4: Brainstorm and Generate Creative Ideas • Develop as many creative solutions to the problem addressed as possible • Consider all ideas • “Dumb” ideas may lead to the final solution! Example of Brainstorming

  12. Stage 5: Analyze Potential SolutionsPhase I • Generated ideas narrowed to few ideas • Examine list and eliminate duplicates • Similar ideas may remain, but not duplicate • Clarifying questions offered by team • Evaluation by vote

  13. Remaining ideas analyzed thoroughly and accurately 3 to 5 options should remain after analysis May have to start process over Analyzing Possibilities Common Sense Economic Analysis Estimation Compatibility Analysis Computer Analysis Techniques Conservative Assumptions Stage 5: Analyze Potential SolutionsPhase II

  14. Stage 6: Develop and Test ModelsModeling • Method of illustrating a solution to a practical problem • Types of Modeling • Descriptive • Functional • Mathematical • Computer CAD Model http://www.aerospaceboy.com/405/construction.htm

  15. Stage 6: Develop and Test ModelsTesting • Allows for comparing and evaluating against established criteria and goals • Done throughout a project • Early models • Prototypes • Quality Computerized Stress Test http://www.sgi.com/fun/gallery/

  16. Stage 6: Develop and Test ModelsTesting Examples • Durability • Ease of Assembly • Reliability • Strength • Functionality • Environmental Considerations • Quality and consistency Nissan Primera Crash Test http://www.crash-test.org/marques/resultat.php?mod=nispri_1997

  17. Stage 7: Make the Decision • Team members establish a means to compare and evaluate results of testing • Working criteria will determine advantages and disadvantages of possible solutions • Develop a Decision Table to visualize each solution’s merits

  18. Stage 8: Communicate and Specify • All information gathered reported to client • Detailed written reports • Summaries of technical presentations/memos • Relevant e-mails • Diagrams, charts, graphs • Drawings and sketches • Computer printouts • Relevant documented material • Last chance to make revisions/terminate

  19. Stage 9: Implement and Commercialize • Project Manager and Team Members • Management and Key Personnel • Technical Representatives • Business Representatives • Attorneys and Legal Support Staff

  20. Project is probably in full production Team is terminated because task is complete Product Performance Review Assessment Report detailing product Used as reference for future project managers and teams Product Performance Review Data on production efficiency Quality Control Reports Money Issues Assessment Report Strengths & Weaknesses Outline what has been learned Suggest ways to improve process quality Stage 10: Post-Implementation Review and Assessment

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