IDENTIFICATION OF ELASTIC PROPERTIES OF STIFFENED COMPOSITE SHELL

摘要

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.%Apra?omas skaitinis-eksperimentinis briaunotos kompozitin?s panel?s tamprumo savybi? nustatymo metodas. ?ioms savyb?ms nustatyti taikytas identifikavimo metodas, kuriame sujungti skaitinio eksperimento planavimas, skai?iavimas baigtini? element? metodu bei gaut? duomen? aproksimavimas. Identifikavimo rezultatus patvirtina pa?ios panel?s da?ni? eksperimentini? duomen? palyginimas su skaitiniais baigtini? element? metodu aptikt? tamprumo savybi? rezultatais.