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Conducted by Tommy Tran

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Logistics Information

Conducted By

Tommy Tran

Date

2021-07-16

Working Session Goals

  1. Finely comb through the sheet metal solution FEA that was completed by Min

  2. Review previous Chassis simulations completed by Jason (MS14) and Matt, Shalin (MS12)

    1. Try to insert current sheet metal model into old simulation setups to see if results will change

  3. Investigate sheet metal solution by using a single sheet metal that is similar to BP (bonded to all tubes), but make it out of steel instead of composites

  4. Once the above steps are completed, arrange detailed FEA review meeting with Mech Advisors to discuss steps and next results

1. Reviewing Sheet Metal Solution FEA

Simulation File Details

Folder Path

D:\Users\Roo\Documents\GrabCAD\MSXIV sims\MS-CHASSIS\Min Reinforcement Sims

File Name

July1.wbpj

Section Reviewed

Notes

ACP (Pre)

Engineering Data

  • Material data seems ordinary

  • 4130 Chromoly - Yield Strength - 435 MPa

  • Structural Steel - Yield Strength - 250 MPa

Geometry

  • Note: When Kimberly was working on collision setup, she found that the tube elements weren’t all properly connected

  • Using the Prepare > Beams > Connect feature, it is shown that not all beam elements are connected properly. This may have been fixed when contacts were later applied under ACP (Pre) Model Setup, but efforts will be placed to correct these errors right now.

Image Added

  • After modifying the beam elements, number of gaps have greatly reduced

Image Added

Model

  • Contacts have been automatically generated for all bodies

    • Contacts are all bonded

    • This can cause error or inaccuracy because this results in contacts being formed between objects that are actually not in contact.

    • FIX: Create automatic connections with specific bodies in mind. Use manual contact regions if necessary.

      • E.g. A separate connection group for gussets, bulkheads

  • Mesh size: 15 mm

Setup

Static Structural (B Pillar)

Static Structural Model

Static Structural Setup

Static Structural Solution/Results

Static Structural (Side 60)

Static Structural Model

Static Structural Setup

Static Structural Solution/Results

Static Structural (Top 30)

Static Structural Model

Static Structural Setup

Static Structural Solution/Results

2. Review Previous Chassis Simulations

MS14

MS12

2a. Inserting Current Solution into Old FEA Setups

3. Sheet Metal Inquiry

4. Setup Detailed FEA Review Meeting

Resources

  1. Mech Advisor Contact List - Mechanical - Confluence (atlassian.net)

  2. Facebook group chat

Plan

  1. Looking to finish work deliverables tonight

  2. Look to schedule detailed FEA review meeting for Monday, July 19, or Tuesday, July 20

  3. Send out messages and arrange meeting by end of day Saturday, July 17

    1. Chassis Specialty People: Matt, Shalin, Jason