Back to Search Start Over

Vibration Analysis of Damaged Viscoelastic Composite Sandwich Plate.

Authors :
Baali, Messaoud
Amrane, Mohamed Nadir
Source :
Periodica Polytechnica: Mechanical Engineering; 2024, Vol. 68 Issue 2, p85-96, 12p
Publication Year :
2024

Abstract

This paper presents a study of free and forced vibration of composite sandwich plate with and without damage using the finite element analysis developed under ANSYS APDL software. This modeling uses the 8-node shell 281 element to modelized the composite laminates of the top and bottom face sheets of the sandwich plate and the 20-node higher order solid 186 element to modelized the viscoelastic core. Two sets of boundaries are considered; Simply supported and clamped boundary conditions at all edges. The effect of damaged face sheets layers on natural frequencies, mode shapes, the frequency and transient responses of the sandwich plate is investigated. Numerical results show remarkable shifts of the natural frequencies, frequency and transient responses due to the presence of damage. It is concluded that the natural frequencies decreasing is due to the loss of structural stiffness. Natural frequencies of the sandwich plates are close to those issued from numerical results available in the literature. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03246051
Volume :
68
Issue :
2
Database :
Complementary Index
Journal :
Periodica Polytechnica: Mechanical Engineering
Publication Type :
Academic Journal
Accession number :
178935695
Full Text :
https://doi.org/10.3311/PPme.19466