What need or want must be met by the solution?
1. Define the Problem
- The need or want that must be met by the solution is that the Crain Strain must be able to support the weight of 14'' from it's tower center.
2. Brainstorming
List/sketch possible solutions that might be used in your final design. Clearly identify and describe how each of these ideas relates to the problem statement.
(Click through slides to show descriptions of how these ideas relate to the problem statement. )
All of the following pictures display possible options I have for creating a inner design for my crane strain project.
All of the following pictures display possible options I have for creating a inner design for my crane strain project.
All of the following pictures display possible options I have for creating a inner design for my crane strain project.
All of the following pictures display possible options I have for creating a inner design for my crane strain project.
3. Research and Generating Ideas
Document your research. Be sure to include proper citations at the end of your notes.
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I have researched that cranes with a "honeycomb" shape on the inside of it's borders can be good in compression, therefore making the overall crane strain stronger.
(source: http://www.sciencebuddies.org/science-fair-projects/project_ideas/MatlSci_StressStrainStrength_h001.shtml#structureofmaterials )
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I have also researched that cranes need to be supported by a strong base with parts that overlap for improved durability.
4. Identifying Criteria and specifying constraints
What are the Criteria and Constraints of the design problem?
The crane must be a minimum length of 14'', maximum of 20''. The height must be 3''. Other than that, the design within the crane is free reign.
5. Exploring Possibilities
Reflect on your brainstormed ideas and research notes and describe the pluses and minuses of each design approach you have considered.
Pluses: In the research I've conducted, The cranes that show the most durability are the cranes with designs that are similar to several "V"'s. So that's the design I've decided to work with.
Minuses: Constructed slanted or sharp angles with the supplies I'm given may prove difficult. Pieces may or may not fit together as I would like.
6. Selecting an Approach
a. Enter the constraints and criteria of the project in the first column.
b. Score your brainstorming ideas against each constraint or criterion and indicate how well the idea meets the criteria and constraints.
3 pts = easily meets
2 pts = somewhat meets
1 pt. = does not meet
c. Total the columns and circle the highest score to indicate your best design idea.
7. Developing a Design Proposal
Based on the evaluation of your ideas, develop a design proposal for the highest scoring idea. Include working drawings (sketches with dimensions, so that you could build your project). Determine the materials you plan to use based on your design. List the material and quantity below.
I have developed a design that will use both the criteria I am assigned as well as take ideas from the research I've conducted. This design takes the equation:
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2J = M + 3
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2(11) = (19) + 3
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22 = 22 ☑
If the numbers match up and are correct, then the design should be stable and able to function correctly.
9. Testing and Evaluating the Design, using specifications
As you create your solution, you will perform tests to make sure that the solution is meeting the needs of the given problem. If your solution does not work, you may need to repeat the previous steps of the Engineering Design Process, until you find a functional design. In the space elow document the type of tests you conducted and the results.
I have tried 15 tests to try and conjugate the answer I've made for my crane. Here is the math in those equations:
Sketch 1. 2J = M + 3
20 = 14 + 3
20 ≠17
Sketch 2. 2J = M + 3
44 = 42 + 3
44 ≠45
Sketch 3. 2J = M + 3
38 = 19 + 3
38 ≠22
Sketch 4. 2J = M + 3
12 = 7 + 3
12 ≠10
Sketch 5. 2J = M + 3
56 = 45 + 3
56 ≠48
Sketch 6. 2J = M + 3
22 = 19 + 3
22 = 22
Sketch 7. 2J = M + 3
16 = 16 + 3
16 ≠19
Sketch 8. 2J = M + 3
10 = 8 + 3
10 ≠11
Sketch 9: 2J = M + 3
16 = 13 + 3
16 = 16
Sketch 10. 2J = M + 3
26 = 19 + 3
26 ≠22
Sketch 11. 2J = M + 3
16 = 19 + 3
16 ≠21
Sketch 12. 2J = M + 3
44 = 37 + 3
44 ≠40
Sketch 13. 2J = M + 3
28 = 26 + 3
28 ≠29
Sketch 14. 2J = M + 3
28 = 20 + 3
28 ≠23
Sketch 15. 2J = M + 3
26 = 23 + 3
26 = 26
10. Refining the Design
Based on your tests, what design refinements should be made to the prototype to ensure that it can satisfy all of the criteria and constraints of the design problem.
15 SKETCHES AND MATH FOR SAID SKETCHES ARE LOCATED UNDER UNIT 2/PROJECT 2 SKETCHES
In an attempt to recreate a better design for my crane, I would have used several diamond and "X" shaped inner designs instead of straight triangles. That would have given my crane strain an advantage when it came to carrying a heavier load. Although in the end, it did hold more than I expected it to. However, my prototype had been assembled unevenly. Which I think added to the factor of not being able to hold as much to it's potential. Given the amount of time given during class and for the fact that the classes ran out of craft sticks, I think I'd be able to redo it much better if given the chance.