Driveline Critical Speed -A Practical Approach 680146

This paper shows how a laboratory critical speed test facility can virtually replace Proving Ground tests to evaluate the strength of driveline structure at critical speed operation.The advantages of a laboratory facility to evaluate quickly, accurately, and economically the myriad of wheelbase, engine, transmission, and propeller shaft configurations is illustrated with a typical driveline test program. Means of reducing driveline stress sensitivity at resonant frequency through engine-transmission modification, use of braces, and propshaft changes are discussed.


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