Open AccessDesign of a 1-3 smart viscoelastic composite layer for augmented constrained layer damping treatment of plates
Author(s) -
Abhay Gupta,
Rajidi Shashidhar Reddy,
Satyajit Panda
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/872/1/012067
Subject(s) - constrained layer damping , viscoelasticity , materials science , structural engineering , extensional definition , composite number , transverse shear , finite element method , composite material , loss factor , shear (geology) , layer (electronics) , composite plate , modal , transverse plane , acoustics , vibration , engineering , physics , vibration control , paleontology , optoelectronics , biology , dielectric , tectonics
In the present work, damping performance of plate with constrained 1-3 smart viscoelastic composite (SVC) layer is studied. The 1-3 SVC is formed through the inclusion of piezoelectric patches within pure viscoelastic material (VEM) phase. The overall structural plate is modelled using finite element method. First, the characteristics of in-plane normal strain and transverse shear strain of overall structural plate are examined. Then, in order to study the dynamic performance, the optimal dimensions of present 1-3 SVC strips are determined using direct search method. There is significant improvement in damping with respect to pure VEM. Both extensional and shear counterparts of modal loss factor increase. These results express that 1-3 SVC may be a useful damping layer in the constrained layer damping treatment of overall structural plates..