The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The block subspace projection preconditioned conjugate gradient method for analysis of natural vibration frequencies and modes applying to large problems of structural mechanics is proposed. It is oriented at the usage in finite element analysis software operated on multi-core desktop computers with restricted amount of core memory as an alternative approach to widespread block Lanczos method and subspace iteration method. We focused our attention on achievement of high computational stability and parallelization of proposed algorithm. The solution of real-life large problems confirms the reliability of proposed approach.