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Calculations and FEA

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titleHand Calcs and FEA

https://docs.google.com/document/d/1_HviPqLPtFTarpXLS2B-U_gP--HpZ5x8XtEnNdH-2Rs/edit?usp=sharing

Final Design

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titleCurrent Status:

  • The current method of fastening uses adhesive/base studs as seen in the following image

  • Several base studs are to be placed around the panel where they will slot into mounts placed along the chassis

  • Chassis mounts design are currently in progress ( Taking into account conflicting mounts as well as roof props )

  • The general mount design is shown below:

  • Slot is made to accommodate for panel hinging with moving studs

  • A general look at the current layout of the mounts (most likely going to change) :

To do List:

  • sync with roof props to check any any motion conflicts

  • sync with side panel to resolve top tube conflict ( discussion between DRIs took place, but lead confirmation is needed )

  • Finalize mount design

  • Create jigs for welding ( up to change as mount design changes )

Manufacturing and Assembly Plans

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Fastener Selections

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titleBase Studs and Fasteners Selected

To clear out any hinging concerns from above and also provide a spacer, an adhesive base nut can be used to resolve both those issues.

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The base nuts have a 1/4 inch / 6.8 mm height which will work to fill the gaps in between the roof and the mounts. Alongside the spacing, the base nuts will prevent any issue that were to arise with studs not slotting properly.

To accompany the base nuts, a hex-head fastener is selected. The bolt selected has a serrated flange to provide a bit of grip onto the mounts.

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Some lock tight can be applied a more rigid fit, but may be a hassle to remove every here-and-there. Thus another option could be considered.

Links to both components:

Adhesive base nuts: https://www.mcmaster.com/98007A134/ 
Hex Head Screws: https://www.mcmaster.com/92820A415/