Transient Dynamic Analysis of Rotors Using SMAC Techniques: Part 2, Numerical Study

[+] Author and Article Information
S. Ratan, J. Rodriguez

Department of Mechanical and Aerospace Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08855-0909

J. Vib. Acoust 114(4), 482-488 (Oct 01, 1992) (7 pages) doi:10.1115/1.2930288 History: Received October 01, 1989; Online June 17, 2008


A new method for performing transient time-domain analysis of rotor systems using a Successive Merging and Condensation (SMAC) technique was introduced in Part 1. This approach can be applied to rotor analysis problems formulated with the finite element method. A numerical study, including examples, comparison of methods, and performance evaluation, is presented here. Validation and applicability of the SMAC method are illustrated with three examples: conservative, nonconservative, and nonlinear. The SMAC algorithm is then compared to the following methods: Transfer Matrix Method (TMM), Modal Superposition Method, and Runge-Kutta Method, and is demonstrated to be computationally more efficient in terms of CPU time and storage space. The issues of stability and time-step size are also studied.

Copyright © 1992 by The American Society of Mechanical Engineers
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