116.810 Engineering Design and Rapid Prototyping IAP 2004 Massachusetts Institute of Technology “International Bicycles Corp.” Requirements Sheet Team Number ____ Product Type: Mountain bike 1. Market Description This bicycle is to be designed for the mass consumer market. The expected sales volume is 100,000 per year. Affordability, excellent performance/cost ratio and light weight are most important to be successful in this market. 2. Requirements Manufacturing Cost (C): C ≤ 6.7 $ /part Performance (δ1, δ2, f1): Displacement δ1 ≤ 0.057 mm Displacement δ2 ≤ 0.009 mm First natural frequency f1 ≥ 320 Hz Mass (m): m ≤ 0.30 lbs Surface Quality (Q): Q ≥ 4 Load Case (F): F1 = 50 lbs / F2 = 100 lbs / F3 = 50 lbs The part has to conform to the interface requirements and geometrical boundary conditions shown on page 2 of this document. This requirement cannot be waived. 3. Priorities Structural performance is the first priority for this product. Next, the customer cares about light-weighting (low mass) and thirdly, manufacturing cost should be as low as possible. These priorities are shown in the Ishii-matrix below: Attribute Constrain Optimize Accept Cost ██ Performance ██ Mass ██ Modifications to these requirements have to be negotiated with Management.No forbidden zone for your team
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