- Step 4: Concept Evaluation. Evaluate your three designs using a Pugh chart. Based on the results, pick your best design from the previous assignment and model it in Autodesk Inventor.
- Step 3 (Again): Analysis. Use the Autodesk Inventor stress analysis tool to identify any problem areas in your design. Fix them.
- Step 3 (Again): Analysis. Use iProperties in Autodesk Inventor to ensure your design is less than 500g. The density of the foam core is approximately 0.136 g/cm^3. You do not want a design that is 498 g. The density of the foam core board has tolerances. It is not exactly 0.136 g/cm^3. You also do not want a design that is 410 g. If that is the case, you have unnecessarily taken too much material out without it gaining you anything.
- Pugh Chart
- Complete set of engineering drawings including assembly drawing and exploded vies of assembly drawing. You only need to provide gross dimensions for your part. I expect these chairs to have lots of intricate parts, you do not need to dimension every one of them. Just provide proof that your chair meets the functional requirements plus an exploded view of your assembly drawing.
- FEA stress analysis of your part.
- Verification that your design is under 500 g.
- All of these should be printed out and turned in to Prof. Spenko or the TA for immediate grading.
- Prof. Spenko or the TA will sign your papers. Once that is complete you can cut your design.
- Become proficient with modern CAD software