Open AccessIDENTIFICATION OF ELASTIC PROPERTIES OF STIFFENED COMPOSITE SHELL
Author(s) -
Andrejs Kovaļovs,
Sandris Ručevskis
Publication year - 2009
Publication title -
aviation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 13
eISSN - 1822-4180
pISSN - 1648-7788
DOI - 10.3846/1648-7788.2009.13.101-108
Subject(s) - finite element method , structural engineering , vibration , shell (structure) , composite number , identification (biology) , point (geometry) , materials science , composite material , mathematics , engineering , physics , geometry , acoustics , botany , biology
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.SantraukaAprašomas 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.