Investigating the effect of misalignment on rotor-bearing systems connected with helical coupling

In this thesis, helical coupling is modeled with the gemetrically exact beam theory in order to investigate the effect of misalignment on rotor-bearing systems. A new approach based on using constitutive equations as constraint was developed. Comparison with previous results showed that proposed approach was able to predict the frequency components associated with misalignment. Results indicated that misalignment causes driven shaft velocity to fluctuate around that of driving shaft for any misalignment type. However variations observed in velocity are not constant for given misalignment value but dependent on inertia and coupling geometry. Large inertia causes rotor velocity to converge to that motor. Results showed that reaction loads are also dependent on inertia and coupling geometry.