A vectorized out-of-core Lanczos eigen-solver for structural vibration problems

A vectorized out-of-core Lanczos eigensolver is developed for large structural vibration analysis. Several numerical examples are solved on the Cray-C90 in an interactive environment. The results presented in this paper show the efficiency and reliability of this out-of-core eigen-solver. I. LANCZOS EIGEN-SOLUTION ALGORITHM Lanczos algorithms for the solution of generalized eigenvalue problems have been receiving a lot of attention in recent years [ I 71 due to its computational efficiency. To solve the following eigen-equation: