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- All simulations to be done with 4130 Steel (Yield strength is approximately 460 MPa)
- Mesh type: Tetrahedron
- Load: 30 000N in respective direction
- Support type: Fixed
Files:
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Useful links:
- Buckling example:
Widget Connector url https://www.youtube.com/watch?v=8ga1_3XG27U - Buckling background: https://www.clear.rice.edu/mech517/WB16/lectures_trainee/Mechanical_Intro_16.0_AppA_Buckling.pdf
- Buckling info: https://www.sharcnet.ca/Software/Ansys/16.2.3/en-us/help/wb_sim/ds_buckling_analysis_type.html
Simulation Data
| Chassis Version Number | Person Responsible | Changes made | Front collision | Side collision | Top Collision | Rear Collision | Interesting Images | Comments |
|---|---|---|---|---|---|---|---|---|
| Version 14 | Matt Suski | Tube Sizes Altered (set to 1.050" and 0.0625" thickness) Combine tool utilized | ||||||
| Version 13 | Ritu Shah |
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|  | Max stress is in one corner (top collision), not symmetrical to other side. Suggests that this is an issue with the modeling of tubes rather than structure. Max side = 241 Max top = 316 Rear max = 195 Front max = 95 | ||
| Version 13-2-Copy |
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| Tried inserting fillet at front joint but results were worse (i.e. max with fillet ~ 132 MPa). Thus, tried same tests without fillets and achieved lower stress results than in V13. | |||
| V13-3 | Ritu Shah | Removed a bunch of members, adjusted them |  |
|  |
| Results still well below yield after removing members | |
| V13-4 | Ritu Shah | Same as 13-3, but removed top bar |  | Still looks good | ||||
| V14 | Matt Suski | Version 13.3 except with the tube size changed to 1.050 and 0.0625" thickness |  | Max stress exceeds both yield and UTS. Weight has decreased to be 55 kg | ||||
| V14-2 | Matt Suski | Version 14 with some tube sizes and types changed |  | Max stress decreased but corner geometry of square and round is unnatural | ||||
| V16_2 | Matt Suski | Version 14_3 with the suspension changed to fit new geometry, as well cross section removed after simulation | ||||||
| V16 | Saif Hafeez | Used Version 16 to perform a buckling test and get a sense of where we are. *DONE WITH 1018, AS 4130 FILE CURRENTLY BROKEN* |
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| From what I know, to compute out critical buckling force, use the load multiplier located in the top left of the images. This value is essentially our safety factor with an applied 30 000 N force. LoadMultiplyer x 30 000 N | |
| VR3 Version | Shalin Patel | UniversityOfWaterlooMidnightSunChassis version, removed two front members to get it to mesh |
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| Maximum stress at orange parts is around 460 MPa, only two corners at the front have a stress of 1430 MPa. May be resulting from removing the two members to get the mesh working. |
