Vibration Control of Composite Shell Panels by Spring-Mass Resonators in Thermal Environment

The shell panels are quite significant in engineering structures since they are popularly used in various sectors viz., nuclear structure components, in aviation and automobile industries. Moreover, the use of laminated composite material is very common in these structures to make them lightweight without compromising in strength. These structures are often subjected to dynamic load when in operation and are also subjected to harsh environmental conditions, such as high temperature and moisture. Therefore, a vibration control strategy needs to be devised to protect these structures from unwanted vibrations due to external loadings. In the present research work, a passive vibration control strategy using spring-mass resonators is devised for attenuating the vibration response of composite cylindrical shell panels in a thermal environment. The shell panel is modelled using an in-house ANSYS Parametric Design Language Code and a forced vibration response analysis is carried out using the ANSYS solver. Finally, the averaged quadratic velocity of the panels is computed in the MATLAB platform by importing the displacement data from ANSYS. It is observed from the numerical simulation results that the vibration response could be suppressed through the application of spring-mass resonators in thermal environment.