Common Design Slides. The Design Process

Transcription

1 Common Design Slides The Design Process

2 MechSE Design-Related Courses ME170: Computer-Aided Design ME199 DES/SAE: Competition Design Projects TAM252: Solid Mechanics Design ME270: Design for Manufacturability TAM302: Engineering Design Principles ME370: Mechanical Design I ME371: Mechanical Design II ME470: Senior Design Project MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 1 of 18

3 Essential Qualities of an Engineer Creativity Attention to Detail Prototype Development MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 2 of 18

4 Stages of the Design Process Identify Need Do Background Research Iterate any steps, as necessary Ideation Prototype Development Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Identify Need Need: driven by marketing or business plan, customer request, cost reduction, design improvement Manufacture MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 3 of 18

5 Stages of the Design Process Identify Need Do Background Research Iterate any steps, as necessary Ideation Prototype Development Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Do Background Research Background: What is currently available? What is the competition? Perform benchmarking, patent search. Manufacture MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 4 of 18

6 Stages of the Design Process Identify Need Iterate any steps, as necessary Ideation Prototype Development Do Background Research Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Manufacture Develop Product Design Spec Product Design Specification (PDS) Identify product/design requirements Review all 29 Primary Elements from performance through cost, to disposal/recycling requirements Objective/measurable - with units (metrics) For example: Able to support 500 N of vertical force Produce flow rate of 200 gal/min Maintain operating temperature of 32º Simple (no) Requires no tools (yes) MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 5 of 18

7 Primary Elements of PDS AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 6 of 18

8 Primary Elements of PDS ME 170 AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 7 of 18

9 Primary Elements of PDS ME 270 AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 8 of 18

10 Primary Elements of PDS ME 370 AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 9 of 18

11 Primary Elements of PDS ME 371 AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 10 of 18

12 Primary Elements of PDS ME 470 AESTHETICS INTELLECTUAL PROPERTY TESTING COMPANY PROCESSES ERGONOMICS QUALITY & RELIABILTY DISPOSAL MARKET SIZE & WEIGHT* SAFETY LIFE SPAN MATERIALS CUSTOMER STANDARDS ETHICS & SOCIETY QUANTITY TARGET COST TIMESCALES ENVIRONMENT SHELF LIFE LIFE IN SERVICE MAINTENAMCE PERFORMANCE MANUFACTURING FACILITY COMPETITION PACKAGING SHIPPING MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 11 of 18

13 Stages of the Design Process Identify Need Iterate any steps, as necessary Ideation Prototype Development Do Background Research Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Manufacture Generate Design Ideas Idea generation: BRAINSTORMING individual and as a team Post Its (organizing your ideas) SKETCH IDEAS initial simple 2D, then Refine to 3D Rough Prototyping with expendable materials (e.g. paper, card board, foam), Rules of Ideation No criticism or ridicule Free flow of ideas Record ALL suggestions Do not prejudge idea MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 12 of 18

14 Stages of the Design Process Identify Need Do Background Research Iterate any steps, as necessary Ideation Prototype Development Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Analyze and Select Design Preliminary design evaluation and calculations Use structured concept selection process (e.g. Pugh chart/matrix) Present to client and explain/defend decision Manufacture MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 13 of 18

15 Example Pugh Chart MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 14 of 18

16 Stages of the Design Process Identify Need Do Background Research Iterate any steps, as necessary Ideation Prototype Development Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Detail Design CAD (Detailed engineering drawings) Analysis: Use analytical and computational tools Bill of Materials Manufacture MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 15 of 18

17 Stages of the Design Process Identify Need Iterate any steps, as necessary Ideation Prototype Development Do Background Research Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Manufacture Build Prototype Evaluate Prototyping and Evaluation: Measure performance Does it work as predicted? Compare against design specs & preset metrics Redesign prototype as necessary Debug prototype and manufacturing processes. Determine prototype vs. production cost is it scalable? MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 16 of 18

18 Stages of the Design Process Identify Need Do Background Research Iterate any steps, as necessary Ideation Prototype Development Develop Product Design Spec Generate Design Ideas Analyze and Select Design Detail Design Build Prototype Evaluate Manufacture ME 170/270: Mass Production ME 370/371: Not Applicable ME 470: Production for Client Needs Manufacture MechSE idesign 2015 University of Illinois at Urbana-Champaign, All Rights Reserved 17 of 18