crta
Hrvatska znanstvena Sekcija img
bibliografija
3 gif
 Naslovna
 O projektu
 FAQ
 Kontakt
4 gif
Pregledavanje radova
Jednostavno pretraživanje
Napredno pretraživanje
Skupni podaci
Upis novih radova
Upute
Ispravci prijavljenih radova
Ostale bibliografije
Slični projekti
 Bibliografske baze podataka

Pregled bibliografske jedinice broj: 419107

Časopis

Autori: Harapin, Alen; Radnić, Jure; Brzović, Danijela
Naslov: WYD method for an eigen solution of coupled problems
( WYD method for an eigen solution of coupled problems )
Izvornik: Int. Jnl. of Multiphysics (1750-9548) 3 (2009); 167-176
Vrsta rada: članak
Ključne riječi: Coupled problems; fluid-structure interaction; eigen value
( Coupled problems; fluid-structure interaction; eigen value )
Sažetak:
Designing efficient and stable algorithm for finding the eigenvalues and eigenvectors is very important from the static as well as the dynamic aspect in coupled problems. Modal analysis requires first few significant eigenvectors and eigenvalues while direct integration requires the highest value to ascertain the length of the time step that satisfies the stability condition. The paper first presents the modification of the well known WYD method for a solution of single field problems: an efficient and numerically stable algorithm for computing eigenvalues and the corresponding eigenvectors. The modification is based on the special choice of the starting vector. The starting vector is the static solution of displacements for the applied load, defined as the product of the mass matrix and the unit displacement vector. The starting vector is very close to the theoretical solution, which is important in cases of small subspaces. Additionally, the paper briefly presents the adopted formulation for solving the fluid-structure coupled systems problems which is based on a separate solution for each field. Individual fields (fluid and structure) are solved independently, taking in consideration the interaction information transfer between them at every stage of the iterative solution process. The assessment of eigenvalues and eigenvectors for multiple fields is also presented. This eigen problem is more complicated than the one for the ordinary structural analysis, as the formulation produces non-symmetrical matrices. Finally, a numerical example for the eigen solution coupled fluidstructure problem is presented to show the efficiency and the accuracy of the developed algorithm.
Projekt / tema: 083-0000000-1538
Izvorni jezik: eng
Kategorija: Znanstveni
Znanstvena područja:
Građevinarstvo
URL cjelovitog teksta:
Časopis izlazi u samo elektroničkom izdanju: NE
Google Scholar: WYD method for an eigen solution of coupled problems
Upisao u CROSBI: jradnic@gradst.hr (jradnic@gradst.hr), 16. Lip. 2009. u 10:13 sati



Verzija za printanje   za tiskati


upomoc
foot_4