A study of the modal truncation error in the component mode analysis of a dual-rotor systemIn the component mode synthesis method, the equation of motion in the generalized coordinates is built upon the undamped eigenvalue data of the component structures. Error is inevitable when truncated modes are used. In this paper, two modal truncation schemes were evaluated with regard to the critical speed, stability, and unbalance response of a two-spool gas turbine engine. The numbers of modes required to yield acceptable accuracy in these cases were determined. Guidelines for modal truncation were derived from these results.
Document ID
19810045639
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Li, D. F. (Virginia Univ. Charlottesville, VA, United States)
Gunter, E. J. (Virginia, University Charlottesville, Va., United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1981
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 81-GT-144
Meeting Information
Meeting: Gas Turbine Conference and Products Show
Location: Houston, TX
Start Date: March 9, 1981
End Date: March 12, 1981
Sponsors: American Society of Mechanical Engineers