Structure is a huge invovlement to the egg surviving the fall from the top of the stadium. You have to have a structure that will absorb the impact of the fall without putting it into the egg. We constructed a cube. In this cube we constructed had many shapes but we tried to stay with rectangles and triangles. These shapes absorb energy very well. We keep the shapes uniform to have the same protection on all sides. These shapes help when they are uniform because they give the exact same support.
This is due to absorbstion of the energy from the falling object.
We suspended the egg in mid air in the middle of our design so no energy could reach the egg. The straws are also dubbled in most places. We also used a lot of scotch tape at every joint to keep the straws from falling apart. We also put the straws inside of each other at every joint to assure that they stay together.
To begin with we took all of the straws out of the packeges of straws and unwraped around 200 straws. We then talked to people that did this projest last year to see what they did to the structure. This it came to our knowledge that we could use many shapes to make this project work. We then begain to see how we could put the straws together to make a 3d structre with triangles and squares.
Our whole group worked well together we all worked together to have the idea to build the structure that we did.
This was a group idea on how to we were going to contruct this projrect. Some outside ideas also helped us to figure out how we were going to construct this project.
The potinal energy before the project falls is a lot. Then as it falls it is going to be kinetic energy. This energy from the top of the stadium is huge but as the egg drop falls the potential energy starts droping but the kinetic energy drops. The energy also gets decreased by the straws. So when the potential energy turns into kinetec energy the force is not the same between the two of them. The straws do a huge job of decelerating the energy.
This project can also be related how people secure a home from earth quakes. When building a house to be earthquake proof they have to do a lot of the same things with the structure of the house as we did with the structure of the project. Principals of structural engineering are applied to variety of mechanicalstructures. The design of static structures assumes they always have the same geometry but the design of moveable or moving structures must account for fatigue variation in the method in which load is resisted and significant deflections of structures.
The forces which parts of a machine are subjected to can vary significantly, and can do so at a great rate. The forces which a boat or aircraft are subjected to vary enormously and will do so thousands of times over the structure’s lifetime. The structural design must ensure that such structures are able to endure such loading for t heir entire design life without failing
Structural engineering depends upon a detailed knowledge of applied mechanics to understand and predict how structures support and resist self-weight and imposed loads. To apply the knowledge successfully a structural engineer generally requires detailed knowledge of relevant design codes the techniques of structural analysis aell as some knowledge of the corrosion resistance of the materials and structures, especially when those structures are exposed to the external environment. Since the 1990s, specialist software has become available to aid in the design of structures, with the functionality to assist in the drawing, analyzing and designing of structures with maximum precision. Such software may also take into consideration environmental loads, such as from earthquakes and winds.
http://freshome.com/2010/03/01/9-structural-design-tips-for-minimizing-earthquake-damage/ http://www.plastics-car.com/CrumpleZone
http://www.physics.com/showthread.php?t=66785
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