2024-09-16 Mechanical Meeting

Announcements

• Trial workday is this Saturday from 1-5ish.

  • We will still start workday at 9:30am. We will all meet at ETC and leave for Pickle in the morning. Drivers will return to ETC by 1 to pick up recruits.

  • Reminder that we will be discussing setting a track width, wheelbase, and CoG location in the morning (and work on architecture brainstorming)

  • If you have a car please bring it if you can to reduce the amount of back and forth

  • Wear your solar shirt if you can

• Reminder to have material ready to set a track width, wheelbase, and CoG location by Saturday; architecture brainstorm ideas by Sunday

• Daybreak disassembly date still undetermined (either Saturday or Sunday). What is the purpose of disassembling the car this early?

  • Decision: Postpone disassembly

• Can we meet this week to have a case study of Electric’s assembly management, and how they use dynamics and frame reference sketches

  • Decision: Replace time saved from postponing disassembly with this meeting

Review Last Workday

Aeroshell

• Trial Workday Draft 2024

• Made plan for new member training:LHR Aerodynamics Onboarding Plan

• Aerodynamics

  • Installed different versions Ansys and Solidworks 24

  • Started making some shell models

  • TAC is on 2023, some of us have 2024

• Composites

  • Continued research tasks

  • Started research proposals

  • Want to have idea of where we want to go as soon as new members start

Body:

• Determined trial workday invitees

• Frame:

  • Started downloading 2024 Ansys (to start messing with composite simulation)

  • Practiced SolidWorks with Model Mania (2 parts and 1 sim)

  • Installed and configured VR3 weldments

  • Began collecting goals for composites testing

• Ergo:

  • Worked on design changes for last year’s pedal box

  • Researched issue with pedal box (master cylinder)

  • Finished occupancy space requested by cesar (Needs quick revision)

  • Talked with controls about plan for steering wheel and dashboard

Dynamics

• https://cloud.wikis.utexas.edu/wiki/x/k4AjCw

• https://cloud.wikis.utexas.edu/wiki/x/6CskCw

Electromechanical

• SW24 installed

• Finalized nextgen SOM layout

• Redoing electrical topological map - started migrating from Draw.IO to kicad

• Battery Module design almost finalized, module PCBs being designed

• Battery box enclosure skeleton model done, extrude once internal dimensions finalized

Design Standards

Design Organization Standards

Trial Workday Plans

https://cloud.wikis.utexas.edu/wiki/x/4wEdCw

Aeroshell Mold Manufacturing Plan

• Used Daybreak dimensions to determine mold dimension

• Split mold

  • Pros

    • easier for mold release

    • wouldn’t have to glue

    • main benefit is for demolding and sanding

  • Cons

    • Would potentially have to cut down foam stock — we are given standard sizes

    • We bought the foam that the foam people got from the supplier—even larger size

    • We might need extra prep to cut foam

    • Buy more stock than you need and roughly cut it?

    • We got our foam and it was a special order because we didn’t need it cut, sawyer didn’t do any work to prep it

    • Sawyer only picked up the foam from the pallet and then machined it

  • This is a mold prep solution

  • Attaching the molds together isn’t that difficult, mold is pretty stable

  • Composites is really rough and hands on, we can use dowels and straps to line things up, no force is pulling them apart

  • Timeline in which we receive molds must be considered. You will not get molds at the same time.

  • Do we wait and get a quote for both?

• Top shell double or part of bottom shell

  • like from front view (tilted to the right) it looks like: c[] (3 parts) or c] (two parts and but imagine the base is wider)

  • top shell sitting in bottom shell?