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Bridge Project
Design Brief
Brainstorming Sketches/Sample Designs
1. Triangles are the strongest shape, so i decided to connect a whole bunch of triangles underneath the bridge to support the load.
2. I used triangles again, however they were connected over the bridge with three member on top creating a trapezoid. 3. I used two squares with right triangles on both sides two times. The squares alone weren't strong enough so divided them in half to create two triangles within the squares. |
Final Design
Conclusion Questions
1. How does the type and direction of stress applied affect the selection of the material type and the cross-sectional area?
Type and direction of stress are critical points that you must take into consideration when trying to figure out which materials to use. If the member is under compression then you would want to use a different material compared to what you would use if it was under tension. A tension force's direction would be outwards. In that case you would want to use a material that is capable of stretching. The direction of a compression force would be inwards, so you would want to use a material that is very sturdy that resists deformation the most. The material will be a different thickness based on the type of stress, this in-turn will increase of decrease the cross sectional area.
2. How can the forces of compression and tension work together to make a stronger bridge?
The forces of compression and tension can work together to make a stronger bridge by allowing the different members of the bridge to contract and expand to keep the bridge together. If they didn't exist then bridges would be very weak.
Type and direction of stress are critical points that you must take into consideration when trying to figure out which materials to use. If the member is under compression then you would want to use a different material compared to what you would use if it was under tension. A tension force's direction would be outwards. In that case you would want to use a material that is capable of stretching. The direction of a compression force would be inwards, so you would want to use a material that is very sturdy that resists deformation the most. The material will be a different thickness based on the type of stress, this in-turn will increase of decrease the cross sectional area.
2. How can the forces of compression and tension work together to make a stronger bridge?
The forces of compression and tension can work together to make a stronger bridge by allowing the different members of the bridge to contract and expand to keep the bridge together. If they didn't exist then bridges would be very weak.