Define a problem
Goals
1. Finish the project with enough time to make revisions and finish the weebly
2. Work together as a team, being helpful and respectful the entire duration of the project
3. Learn and better understand trusses as a whole
1. Finish the project with enough time to make revisions and finish the weebly
2. Work together as a team, being helpful and respectful the entire duration of the project
3. Learn and better understand trusses as a whole
Generate concepts
Our first truss broke under a maximum force of 6.05 newtons. Its breaking point was in the right angled member, which was 5.03 under compression. Our second truss broke under a maximum force of 10.2 newtons. Its breaking points were in both of the bottom members, however AB was had a force of 0 and BC was 8.5 under tension. All of these breaks were unexpected to me because all 3 members were under different amounts of force, different locations, and were not all the same type of force.
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Develop A Solution
Truss #1
Construct and test prototype
Evaluate Solutions
Efficiency=F/W
Truss #1:
10.1 = 6.05N / .6g
Truss #1:
8.5 = 10.2N /1.2 g
The first truss was the most efficient because it withstood the most force compared to the total mass. A triangular truss is always the most efficient because of their unique geometric properties, their method of transferring loads and their spatial openness.
Truss #1:
10.1 = 6.05N / .6g
Truss #1:
8.5 = 10.2N /1.2 g
The first truss was the most efficient because it withstood the most force compared to the total mass. A triangular truss is always the most efficient because of their unique geometric properties, their method of transferring loads and their spatial openness.
present a solution
Conclusion
The first triangular truss failed because the member that broke was under the most compression. In both my hand calculations, and the MD solids the angled truss was predicted to be under compression, the most stress. However, the second truss broke on the bottom two members these members were under tension and one was not under any stress, therefore it was unexpected when with they broke. If we were to re create/design our trusses I would use more glue to make the truss more sturdy. Also, using a stronger wood would make the truss more solid and stable.