Numerikus modális analízis izogeometrikus módszerrel: Numerical modal analysis using isogeometric method
2020
Isogeometric analysis (IGA) is a new approach to finite element analyis (FEA), that greatly extends the possibilities of traditional FEA by employing NURBS-based elements. In numerical modal analysis, the estimation of natural frequencies by IGA also get more accurate: in the studied numerical examples the IGA-based numerical method has considerable advantages both in a numerical method based on Euler-Bernoulli beam theory, and in a new numerical model based on Timoshenko beam theory.
Kivonat
A vegeselem-modszer (VEM) egy uj megkozelitese az izogeometrikus analizis (IGA), mely NURBSalapu elemek hasznalataval tulmutat a klasszikus VEM lehetősegein. Ezt alkalmazva numerikus modalis analizis eseten a sajatfrekvenciak meghatarozasa is pontosabba valik: a vizsgalt numerikus peldakban mind az Euler-Bernoulli-fele, mind az ujszerű, Timoshenko-fele rudelmeleten alapulo modellek eseteben jelentős a bemutatott IGA-alapu numerikus modszer előnye.
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