This page outlines the workflow for the chassis design “sprint” that is happening as we leverage help from all members to help optimize the design of the chassis!
This page outlines the expected workflow (where to get your parts, how to sim, how to document your sim results/findings, and just how this entire thing will work lol)
For chassis requirements, look here: https://uwmidsun.atlassian.net/wiki/spaces/MECH/pages/3699671109/MS16+Chassis+Development+Critical+Path
That’s not to say that’s the only requirements needed for chassis, if you have any ideas, propose it during design reviews!
Group splittings
As mentioned in the critical path, the chassis is split into 4 sections, please see which section you are responsible for below
If you are interested in participating, shoot the chassis leads a message!
Section | Members involved |
|---|---|
1 (FSU + foot compartment) | |
2 (Occupant Cell: Side Collisions) | |
2 (Occupant Cell: Rollcage) | |
3 (Battery box) | |
4 (RSU + Aerobody integration) |
subject to change
Section 4 currently combined with Sec 3
Note: occupant cell is also split into rollcage and side collision cases, so members will be split up further in parts they are responsible for
Communication
There is a discord channel under chassis / internal structures for #chassis-16-design
There is a thread for each section, please communicate any questions on the thread pertaining to your section
Workflow
Each person updates their full chassis assembly (from Bild) per week in the design sprint period
When you are on Bild, these are the available files for you
Open the CHA000 top level assembly - you should be prompted that the file is read-only, continue opening the file but do not check it out on Bild
If you are prompted that the space claim file is missing, you will have to download that as well
Go into MSXVI → misc → Space claim and download MSX6-FUL001-Space claim assembly
DO NOT DOWNLOAD MS16-FUL002, that is the WRONG file
Close and reopen the CHA000 assembly, your file should be updated with the space claim file
If its still missing, choose “browse for the missing component” and choose the location where you downloaded the space claim assembly in your documents
The Bild version is the version with accepted changes to the final assembly, do not check it out and update unless prompted with proper version control
Once you have the file open, you can make a local copy in your computer for development using pack and go
Choose a directory to save your development file that is not your Bild folder
Now open the new assembly in your directory and work in that assembly!
Remember to update your assembly with the updated chassis when you are prompted to do so!
Run the FEA simulation for the newest updated chassis configuration for each loading cases that is relevant to your assigned section, record the results
Make your own confluence page under this section with your name and section, and populate the page with data as necessary Chassis FEA template
Make changes to your section, rerun the FEA simulations on your newest configuration of the chassis, document the changes you made and why you made them in your confluence page
By default, Solidworks has provided some standard weldment profiles when you create a structural member - you will soon realize the chassis files do not use them and refers to some external files!
To download the weldment profiles used for the chassis, go to Bild → MSXVI → Internal Structures → Chassis Development → Weldments and download the VR3 Weldments profile folder, save it in a place in your computer
You will have to tell Solidworks where they can find the new weldment profiles you want, so go back to Solidworks → options → system options → file locations
Show folders for weldment profiles
Add the directory where you saved your weldment profiles
That’s it! You should be able to use VR3 weldments for your chassis development files from now on!
The changes doesn’t have to necessarily be due to less stress concentrations! If it’s a change for integration efforts of the chassis - that is something that should be proposed too!
During design reviews, propose the changes - if accepted, changes will be made to the chassis
Repeat until chassis is locked/your section is agreed to be optimized
Documentation