Context:

• Need to check mesh convergence of simulation results to see if results have fully converged and are accurate

• Helps to fully validate that tube solution is not an effective solution

Strategy:

1. Select extreme cases for vehicle collision scenarios to focus on

2. Control mesh size of extreme cases vehicle collision scenarios

3. Run results for selected scenarios and record max stress results

4. Conclude on feasibility of tube solution

Step 1: Select Extreme Cases of Vehicle Collision Scenarios

Step 2 + 3: Mesh Size + Results of Selected Vehicle Collision Scenarios

Google Sheet for Calculations: https://docs.google.com/spreadsheets/d/1n91ZixBpglChzBI9llisNNkTVGtGm33r0tSj6fKVAr4/edit#gid=0

Simulation File Name: 2021-01-06 (vehicle impact).wbpj

Folder Path: D:\Users\Roo\Documents\GrabCAD\MSXIV sims\MS-CHASSIS

Note: These files are located on ROO remote desktop

Side 30

Comments:

As mesh size decreases, max stress increases and percent error increases.

Open

Figure: Mesh size 30 mm

Open

Figure: Mesh size 25 mm

Figure: Mesh size 20 mm

Figure: Mesh size 15 mm

Front 30

Comments:

As mesh size decreases, max stress increases.

Figure: Mesh size 30 mm

Figure: Mesh size 25 mm

Figure: Mesh size 20 mm

Figure: Mesh size 15 mm

Top 60

Comments:

As mesh size decreases, max stress increases and percent error increases.

Figure: Mesh size 30 mm

Figure: Mesh size 25 mm

Figure: Mesh size 20 mm

Figure: Mesh size 15 mm

Step 4: Conclusion on Tube Solution

It is not 100% that we should move on from tube solution.

As mesh size decreases, max stress increases and percent error increases. Simulation results does not converge.