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.
A finite element model is used for flexural vibration analysis of a static (non-rotating) rotor with two open cracks, and the stiffness matrices of the cracked elements are obtained using transfer matrix analysis and local flexibility theorem. Through numerical simulation, the effects of the slenderness ratio and the crack depth on the mode shapes and the changes in the eigenfrequencies of the cracked...
A finite element (FE) model, which is based on transfer matrix analysis and local flexibility theorem, is introduced for crack identification of a static (non-rotating) rotor with an open crack. Through numerical simulation, the effects of the location and depth of the crack on the mode shapes and the changes in the eigenfrequencies of the cracked rotor are investigated, and the ratio of the changes...
An efficient direct method based on hierarchical matrices (H-matrices) was developed for the solution of large sparse finite element systems. H-matrix technique provides a data-sparse way to approximate the inverse of a finite element matrix which is dense originally. The approximate inverse can be computed and stored in the algebra of hierarchical matrices with almost linear complexity. The accuracy...
In this paper, a novel flux-switching permanent magnet (FSPM) linear generator is proposed for wave energy extraction. The linear generator is analyzed by using 2D finite element method (FEM) to investigate the electromagnetic characteristics. The result shows that the proposed generator has advantage of the voltage waveform by reducing the cogging effect. The computational results are verified by...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.