Thanks Barney and just realized that didn't get back to the tongue !?!
The simulation will take that gouge/dent produced by the set screw/bolt and
run the simulation based on some other attributes
Where it is in reference to the whole member and where between the ball/box, etc
If dead centered the forces are less than if off center. There will be bending
moments on any trailer tongue and there will be tension/compression cycles statically and dynamically.
There would also be some kind or level of 'dent' of 'bowing' in of that member
that would affect the moments of that tongue
Whether it will matter will take some deep DB info and math. I can do that, but
it would take a computer fractions of the time it would take me to look every
thing up and then dig out the calculator
Plus the computer can also compare and simulate it against the whole trailer
I can too, but it would take me orders of magnitude in time to do that.
Anyway, that is what I see when anything like this comes up. Ends up gut feelings
that generally are pretty close or in the general direction of a simulated results
The big 'factor' is the dialed in longevity required. Safety margin to most.
That would be in years and/or 100's of K miles, or some such level dialed in
and there would be a +/- to it.