APPLICATION OF COMPONENT MODE SYNTHESIS IN THE ANALYSIS OF DAMPED LINEAR SYSTEM

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Authors
  1. Muravyov, A.
  2. Hutton, S.G.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);British Columbia Univ, Vancouver BC (CAN) Dept of Mechanical Engineering
Abstract
The analysis of nongyroscopic viscously damped linear dynamic systems is presented. Discrete systems having symmetric mass, stiffness and damping matrices are considered, where discretization is accomplished by application of the finite element procedure. In this work, a formulation of the component mode synthesis (CMS) method was developed for the general case of nonclassically damped systems. A new approach to the problem of determining the inverse of the stiffness matrix of an unconstrained component is presented. Some examples of forced response are considered, in particular, the case of general periodic excitation and the influence of damping. The experimental part of this study consisted of designing and testing a vibration rig to simulate the behaviour of a rigid engine resting on isolators that in turn are supported on flexible beams. Comparison of analytical and experimental results show good agreement for egniquantities and steady-state forced response.
Keywords
Component mode synthesis;Eigenvector
Report Number
DREA-CR-95-443 — Contractor Report
Date of publication
01 Oct 1994
Number of Pages
102
DSTKIM No
98-00625
CANDIS No
507462
Format(s):
Hardcopy;Document Image stored on Optical Disk

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