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because only one cylinder fires at a time, you'd have to model the peak torque condition on each journal and model the constraint of the bearings accurately. Even then you'd have depth variable material properties... the elastic modulus, yield strength, and hardness are likely higher at the surface and significantly lower towards the core. Not to mention the residual compressive stress at the surface from the shot peening. Without taking these things into account, the deflections and stresses you'd see would be very misleading. Thats not to say it can't be done... it would require someone who specializes in FEA with some pretty expensively licensed software with all the bells and whistles. If we took up a collection and most of the members donated we could probably pay someone to do this.
 
what? It looks a little stumpy, but fits great in the hand! (n/m) - ZEngineer
12/12/06 |
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