Advanced Torsional Study Method and Coupling Selection for Reciprocating Machines
نویسنده
چکیده
Trains including reciprocating machines are subject to the most varied and often most severe torsional disturbances in comparison to other machinery classes. If crankshaft or rotating component failures occur as a result of shaft torsional oscillations, the consequences can be catastrophic. In this paper a new comprehensive model and solution method using analytical formulations are developed to study both steady state and transient response of complex reciprocating trains. Analytical results are presented and recommendations for torsional reliable trains are addressed. Couplings being the more accessible components within the train are often modified to tune the overall system. Recommendations for coupling: High torsional stiffness coupling (best option if allowed by torsional analysis), or flexible coupling (more elasticity and damping and more maintenance) or integral rigid forged flange connection (rugged train, less elasticity and damping) with single bearing electric machine.
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