Get the relevant norm (e.g. ISO 8528-9 for gensets, for sure there is an ISO / EN or other for your specific application) which gives the maximum allowed vibration, and use that one for your layout.
You should have the allowed vibration in function of frequency of the sensitive equipment, and...
Don't cool it in the same loop, get a cooling water loop and use water heat exchangers with a thermostat & bypass.
The radiator manufacturer should be able to tell you how big you need to size it depending on the temperatures and location.
Yes and yes.
A typical value is 0.001 of the shaft diameter.
But this can vary widely depending on:
- application: passenger cars will have less clearance, heavy power pumps will have larger clearance.
- oil used & oil temperature
- rotational speed & load
- ...
And yes, journal bearing...
What is the increase in charge air temperature? 15% derating is high. 102F is not that high, so it seems mostly to be a cooling issue because of the high humidity?
If your engine has knock protection and you can follow up on everything, I'd just derate less (depending on charge air temp, ~ 5%...
Depends on your settings, most notably NLGEOM and your element formulation.
I've dug up the relevant page in the manual for you:
Stress and strain measures
The stress measure used in Abaqus is Cauchy or “true” stress, which corresponds to the force per current area. See “Stress measures,”...
From my understanding of your question, the conclusion that you should make is that you do not know what von Mises stress is.
Unless you are performing a uniaxial FE test, why would you be surprised that the von mises yield criteria is not the same as the maximum principal stress theory?
Which...
Cheapest solution (similar to your welding solution):
Take a hammer & pin punch and hit (in between) the threads of the bolt & nut after tightening (i.e. a DIY deformed thread lock nut).
The beam elements should EXACTLY match the solutions by hand.
And if this is a simple supported structure and your model is good, the solid elements should give a more precise answer.
But, as mentioned, if the beams are slender, difference should be small.
For thick beams, eg. check with roark...
What you want to do is put a slender beam in a (relatively) soft material: search for deep pile foundations:
eg. http://www.simulia.com/download/pdf2009/Qiu_SCC2009.pdf
Depends if you want to take into account the time (rate) dependent behavior or not ...
Steel is also viscoelastic.
Anyway, if you are going to have large deformations, a hyperelastic material law will probably be better for all purposes.
