Identification of Elastic Properties of Stiffened Composite Shell

Abstract

In the present study a numerical-experimental method for the identification of the elastic properties of stiffened composite panel from experimental vibration analysis is carried out. The elastic properties of a panel are found by an identification procedure based on the method of experiment design, the response surface approach, and the finite element method. The results obtained were verified by comparing the experimentally measured eigenfrequencies with the numerical ones obtained by FEM at the point of optima. Santrauka Aprašomas skaitinis-eksperimentinis briaunotos kompozitines paneles tamprumo savybiu nustatymo metodas. Šioms savybems nustatyti taikytas identifikavimo metodas, kuriame sujungti skaitinio eksperimento planavimas, skaičiavimas baigtiniu elementu metodu bei gautu duomenu aproksimavimas. Identifikavimo rezultatus patvirtina pačios paneles dažniu eksperimentiniu duomenu palyginimas su skaitiniais baigtiniu elementu metodu aptiktu tamprumo savybiu rezultatais.

The modal analysis of laminated composite cylinders under axial tension loading in ANSYS

“…To refine the elastic properties of the composite monolayer, the finite element model was calibrated. The properties of the composite material were determined using an identification method based on solving the inverse problem [26,27] and including several stages based on [28].…”