Description
For this project we learned how to do basic 3 dimensional modeling in Autodesk Fusion 360. First we watched a tutorial on all the steps needed to create the helmet. Then we went in Auto desk and created one of our own. Our group had to do a lot of experimenting with the tools given to us because the platform was so new to us. The first step was to insert background images for the helmet and get those scaled so we had something to go off of. After creating the outer shell we focused on making the visor. Cutting out the visor was a little tricky but after some playing around with it we got it.
You can view our helmet HERE.
You can view our helmet HERE.
Design Explanation
We wanted to equip our helmet with MIPS technology. The outer shell is attached by a rubber casing that allows a small amount of free movement under heavy load. Because the brain is most sensitive to rotational movement, it is very important to reduce the rotational force experienced as much as possible. There is a crumple zone at the chin of the helmet, to slow down the rate at which the force of impact is applied.
In terms of safety standards, our helmet would have to go through rigorous testing in order to be approved. However, the helmet does meet the requirements of having a periphery angle greater than 105 degrees. Also there are no extrusions greater than 5mm.
In terms of safety standards, our helmet would have to go through rigorous testing in order to be approved. However, the helmet does meet the requirements of having a periphery angle greater than 105 degrees. Also there are no extrusions greater than 5mm.
Research
We did some quick research and made a short outline of the most important information. We kept this research in mind as we designed the helmet.
Research:
Research:
- Helmets usually have a hard outer shell, which distributes force throughout the softer inner linings
- The job of the helmet is to “manage” the force. Force cannot just be absorbed, it has to be redistributed. Helmets increase the area of impact, and increase the time of impulse
- Since I=FT, and “I” will stay the same, increasing the time of impact decreases the force felt in one instant.
- Spreading the force over a greater area decreases the pressure felt in one spot on the skull; pressure= F/area. This reduces the likelihood of fractures or even punctures.
- Many helmets now include MIPS, Multi-directional Impact Protection Systems.
- Allows outer shell to rotate slightly to protect brain from sudden rotation
These are some outline sketches of the helmet from different perspectives.
Why?
This helmet design helped us gain an important skill that can be used in many applications. We are already designing an electric longboard prototype. 3D modeling can be a very useful step in the design process, helping to conceptualize the final product.