Fixed Fastener Formula

[obie18]

When using the fixed fastener formula you divide the difference between the MMC of the clearance hole by the MMC of the fastener by two. If another component is introduced into the assembly is it necessary to divide the difference by 3?

 

[Standing]

No

Bradley
SolidWorks Premim 2007 x64 SP5.0
PDM Works, Dell XPS Intel(R) Pentium(R) D CPU
3.00 GHz, 5 GB RAM, Virtual memory 12577 MB, nVidia 3400

 

[drawoh]

obie18,

The assumption behind the fixed fastener formula is that the clamped parts are located by something other than the fastener. This is true for each and every fastener in your assembly.

Sit down and do the geometry. It all makes sense.

JHG