10/16-10/30

The last two weeks have been spent getting ready for the end of the semester in terms of getting together a BOM for all the parts that will be needed as well as working on the 3rd set of presentations, and the rough draft of the final report. I've been working on the presentation and trying to get that finished while working engineering drawings that will go into the final report. There are a million parts that are going into our assembly, and all of them need drawings to reference when we start to build in the Spring. 1/30

figure 1. BOM for Half-scale Bogie, Steering, and Failsafe.

figure 2. Sample Engineering Drawing for Bogie part

11/9-11/16

This week I was spent my time working on the gear housing for the steering system as well as the linkages that control the up steering arm. I am also working on cutting out the second prototype out of wood since I adjusted some of the dimension from the last prototype. The hope is that validate the dimensions we choose and the bogie will not bind on the track. I also had to completely redo the housing assembly half way through this blog and that is why I stopped writing it. I will get back to work and try to have a complete model done as soon as possible.

10/2-10/9

This week was spent working engineering drawings that are to be used next semester for manufacturing. I am also working to finalize the BOM in order to meet the November 15th deadline. I am also continuing to support the propulsion subteam with placement of components as well as suspension. I am also working with Jorge to make sure that the gear housing for the steering will work for how we need it. Overall, there is lots of work still to be done, but we are working to get all of it done. We will meet today with Bengt to discuss current design progress and work on any design suggestions that he might have.

10/26-11/2

This week I worked on finalizing the presentation by adding initial hand sketches for design work, and practicing the presentation. I also began working on FEA of the failsafe in order to determine whether or not the initial design would withstand the impact forces of the bogie falling. These impact forces can be seen in figure 1.

figure 1. impact force calculations. Once I knew the force of the impact, I used Solidworks FEA to come up with the stresses within each failsafe. This can be seen in figure 2.

Figure 2. Von Mises Stress within the Failsafe Overall, this was a productive week.