Page to document the meetings that were held.
Types of Meetings:
Project Planning
Updates
Training Session
Working Session
Decision-making
Format:
[Type of Meeting]_[YYYY.MM.DD]_[Meeting Description]
Terms:
DRI - Directly Responsible Individual
Training Session_2021.05.06_Project Breakdown, Timelining, Member Training
Decision Making_2021.05.15_Week 1 Deliverables
2021.05.22
Chassis inaccuracy investigation should use the direct method of creating accurate chassis model and running it in simulations
it is not possible to do this without being onsite and measuring out the chassis
Conclusion: Composite solution FEA will continue, but incorporates a large SF as much as possible
Chassis inaccuracy investigation will be an additional investigation after June 2 (when lockdown lifts) to validate the solution chosen.
Also provides geometrical constraints/requirements that is useful
We should also do destructive and validation testing of composites and composite joints on the solution found
→ this should be added onto the project timeline near the end, etc.
What are the real downsides of sheet metal compared to composite panels besides weight?
(Efforts of down selecting material choice for panel solution)Sheet metal is
easier to manufacture
we won’t have to manufacture it besides partially sizing it down
no testing required
more reliable
less work for us overall
Need to know more about weight:
We can add more weight but do we care (i.e. will it surpass the weight limit?)
S2021 Updated Masses of Sub-Team Assemblies - Mechanical - Confluence (atlassian.net)
E.g. we can’t use steel sheet metal because it will break UCA = convincing reason
Aluminum may not be in our design space and there is an easy way to validate that:
is it weldable, etc.
Could have been a prescreening method before material selection and adding simulations
Order of priorities/working on things:
Possibly steel, composites, maybe exclude aluminum
Note: Wouldn’t turn over every rock in the investigation
also want to close out options as soon as possible before they rear their ugly heads down the line
Action Items
Invalidate aluminum through welding or attachment research
See if we can exclude composites
Get updated masses of vehicles
Mesh convergence studies
question mark of how accurate results are and if any results have converged
Fixed faces of collision object to allow bowing of the collision object itself
Contact between collision object and chassis to become frictionless
Would need additional ways to constrain Chassis' movement (to compile solution)
But there is a chance that it can improve
also gives gap between chassis tubes and collision object when (e.g.) the front chassis face bows in front of the collision object
if it was bonded - the front tubes of the chassis cannot deform in any way (infinite stiffness problems)
Other ASC/legacy setup questioning
contact mech advisors about
Material Selection Note:
Choose a baseline material at the beginning and try to refine that material later on
If there is a reason to change it, just need to check previous documentation