Final Paper - Unique Design for Go-Cart Frame Using Composite Materials Group Members Summary After analysis of the materials stress and strain

Final Paper - Unique Design for Go-Cart Frame Using...

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Unique Design for Go-Cart Frame Using Composite Materials Group Members Summary After analysis of the materials stress and strain calculations, we have decided to forgo our initial usage of a composite carbon fiber for the frame. The composite carbon fiber was determined to be too brittle to hold up to the stress the go-cart frame would be subjected to as well as very expensive. The use of a composite carbon fiber material would decrease wear, safety, marketability, functionality and life of the go-cart frame. Instead, we have decided to with an Aluminum Alloy, specifically Al 2024-T6. The calculations of this material were determined to be able to hold up to the stress the go-cart frame would endure and the cost was
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very economical in comparison. This would allow the frame the marketability and safety necessary for production of the frame. It would also have a longer life cycle for the end user and be a better investment for them. Our design was to place the engine in the rear of the vehicle with the rear wheels absorbing the majority of the load. We place the driver in the center to center the vehicle load as the driver would weigh more than the engine (assuming an child driver). This would help balance the loads on the frame and the wheels. The gas tank would be centered and in front of the driver to balance the load on the front wheels as they would also be under loads from the steering wheel, steering column and front braking system. Current designs did not allow for maneuverability of the driver. This was considered as a safety issue as the driver would have difficulty compensating for changing terrain. Therefore, the engine was placed behind the driver, and therefore more room to allow for the driver to compensate for terrain. We also designed side bars to help the driver in the event of a rollover. Future design considerations would allow for a complete cage around the driver, however considerations will have to be made as we would not want the cage to inhibit the maneuverability of the driver, but enhance the safety. Objective Our objective is to redesign the conventional go-cart frame by modification to create a unique design and the use of composite materials for the frame. The frame redesign would ideally offer more aerodynamic characteristics, reduce the weight of the frame, and offer more room and protection to accommodate the various sizes (heights and weights) of drivers. This would also influence safety as the driver would have more room to maneuver the go-cart. We are currently researching the use of various composite materials to make the frame stronger, yet
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lighter and more aerodynamic. The material would also have to be able to sustain vibrations from the vehicle over various types of terrain that these individuals race over. If the material cannot sustain the vibration, stress or strain, it would make the redesign while more aerodynamic, impractical at best. Composites are not a cheap material, but if the material holds
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