Further Enhancement of Frequency Response and Damping Analysis Capabilities of the VAST Finite element Code (Phase III). Part II: Development of an Out-of-Core Complex Eigenproblem Solver

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Authors
  1. Jiang, L.
  2. Chernuka, M.W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
Abstract
An effective numerical method for solving complex eigenvalue problems, the complex inverse power method, is discussed in this report. The method is derived by extending its real version to handle complex stiffness matrices resulting from the finite element discretization of the viscoelastic damping materials. Details on the implementation of this method into the VAST program are then presented. Finally, the newly developed complex eigenproblem soler in VAST is verified by numerical problems.
Keywords
Constrained layer damping;Damping loss factors;Structural acoustics;Complex Eigenproblem Solver
Report Number
DREA-CR-98-411-PT-2;MARTEC-TR-97-24-PT-2 — Contractor Report
Date of publication
01 Sep 1997
Number of Pages
40
DSTKIM No
99-00983
CANDIS No
510742
Format(s):
Hardcopy;Document Image stored on Optical Disk

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