Calculating Inertia for Changing Speed Engines Connecting Rod

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Calculating inertia for a changing speed engine's connecting rod involves understanding the moment of inertia (MMOI) as a constant when treating the rod as a rigid body. The changing speed does not affect the MMOI value, which is determined by the integral of r^2 dm. For kinetic energy calculations, the relevant formula is KE = 0.5 x kg x velocity^2, highlighting the distinction between energy and inertia. Clarifying specific needs is essential for accurate assistance, as uncertainty in requirements complicates the discussion. Understanding these concepts is crucial for effective calculations in engine dynamics.
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Calculating for a section of an engines connecting rod that is always changing speed
I have seen different formulas for inertia. Must be different types.
Since it is changing speed I guess I am looking for the inertia that is against that change.
any help is much appreciated. I know ya'll get a lot of questions on this forum.
 
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Assuming that you are treating the con rod as a rigid body, the MMOI is simply a constant, the integral of r^2 dm. Changing speed has no impact on the MMOI value.
 
I think maybe the formula I need is the one that includes velocity which is
KE= .5 x kg x velocity^2
 
Energy an inertia are different things. We can't tell what you need.
 
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If you don't know what you need, it will be very difficult for anyone else to help you because we don't know either.
 

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