Steady-state analysis of a nonlinear rotor-housing systemThe periodic steady state response of a high pressure oxygen turbopump (HBOTP) of a Space Shuttle main engine (SSME), involving a clearance between the bearing and housing carrier, is sought. A harmonic balance method utilizig Fast Fourier Transform (FFT) algorithm is developed for the analysis. An impedance method is used to reduce the number of degrees of freedom to the displacements at the bearing clearance. Harmonic and subharmonic responses to imbalance for various system parameters are studied. The results show that the computational technique developed in this study is an effective and flexible method for determining the stable and unstable periodic response of complex rotor-housing systems with clearance type nonlinearity.
Document ID
19910060081
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Noah, S. T. (Texas A & M University College Station, United States)
Kim, Y. B. (Texas A&M Univ. College Station, TX, United States)