MECHANICAL PROPERTIES OF NANOCOMPOSITE LAMINATED STRUCTURE AND ITS SENSIBILITY TO MODAL ANALYSIS PROCEDURE

Authors

  • HORACIO VALADARES DUARTE DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS
  • LáZARO VALENTIM DONADON DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS
  • ANTôNIO FERREIRA AVILA PROFESSOR ASSOCIADO AT DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS

Keywords:

MODAL ANALYSIS, MECHANICAL PROPERTIES, NANOCOMPOSITES, FINITE ELEMENTS, INVERSE METHODS

Abstract

IN THIS WORK, TENSILE AND SHEAR MODULUS, AS WELL AS POISSON'S RATIO
OF A WOVEN ORTHOTROPIC NANOCOMPOSITE PLATE WERE DETERMINED FROM
VIBRATION DATA. PLATES USED IN THE EXPERIMENT WERE 16 LAYERS S2-
GLASS/EPOXY COMPOSITE MANUFACTURED BY VACUUM ASSISTED WET LAY-
UP. THE NANOCOMPOSITE PLATE WAS OBTAINED BY ADDING 0%, 1%, 2%,
5% AND 10% NANOCLAYS IN WEIGHT TO THE EPOXY MATRIX. A FINITE
ELEMENT MODEL OF THE COMPOSITE PLATE COMBINED WITH A GRADIENT
METHOD WAS APPLIED TO OBTAIN AN APPROXIMATE NUMERICAL SOLUTION
TO EXPERIMENTAL DATA IN ORDER TO ESTIMATE THE MECHANICAL PROPER-
TIES. TWO DIFFERENT MODAL PROCEDURES WERE EMPLOYED: THE LASER
ANEMOMETRY AND HAMMER TEST. A MODAL ANALYSIS WAS MADE IN
BOTH CASES TO DETERMINE STRUCTURAL MODE SHAPE AND ASSOCIATED
FREQUENCIES, MODAL AND MECHANICAL PROPERTIES FOR DIFFERENT
NANOCLAY COMPOSITE PLATES, AS WELL AS ASSESSING ITS SENSITIVITY TO
MODAL ANALYSIS.

Author Biographies

HORACIO VALADARES DUARTE, DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS

PROFESSOR ADJUNTO

LáZARO VALENTIM DONADON, DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS

PROFESSOR ADJUNTO

ANTôNIO FERREIRA AVILA, PROFESSOR ASSOCIADO AT DEPARTAMENTO ENGENHARIA MECâNICA DA ESCOLA DE ENGENHARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS

PROFESSOR ASSOCIADO

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Published

2013-06-27

Issue

Vol. 11 No. 2 (2014)

Section

Articles

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