H3 - Massachusetts Institute of Technology 2.008 Design and...

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Massachusetts Institute of Technology Problem Set 3 2.008 Design and Manufacturing I I Problem Set 3 We would like to distribute our favorite solution for each problem to the class as the official solution so please strive for clarity and elegance. Problem 1-1. Thermoforming Consider the thermoformed part drawn in Figure 1 which was used to package last semester’s hamburger yoyo. This part was unapologetically difficult to manufacture, and this problem will investigate some of its pitfalls. X Y inch Figure 1 : Thermoformed part (a) Compute the part’s draw ratio. Is it reasonable? (b) The part was formed from a sheet of clear polystyrene with thickness 0 . 030 inches and dimen- sions 4 inches by 4 inches square. The part was vacuum-drawn with a clamp that enclosed an area of approximately 3.5” by 3.5”. Assuming that the drawn part has uniform thickness, what is the wall thickness. (c)
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H3 - Massachusetts Institute of Technology 2.008 Design and...

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