Effect of temperature on the performance of active constrained layer damping of skew sandwich plate with CNT reinforced composite core

Abstract

In this paper, the first attempt has been made to investigate the performance of the active constrained layer damping system in the thermal environment. For such investigation, a skew laminated composite sandwich plate with carbon nanotube-reinforced composite core is considered. The nonlinear strain-displacement relations are employed to generate the initial-stress stiffness matrix and the mechanical stiffness matrices using linear strain-displacement relations. The negative velocity feedback control-law is used to control the first few modes of the vibrating sandwich plate. Comprehensive investigation has been carried out to understand influence of geometric and material parameters on the damping performance of the system.

Keywords:

• Sandwich plate
• carbon nanotube-reinforced composite
• active constrained layer damping
• skew sandwich plate
• shear deformation theory
• thermal environment

Acknowledgments

The authors would like to register their gratitude to Science and Engineering Research Board (DST-SERB, Project No. EEQ/2017/000744), Govt. of India, and Department of Mechanical Engineering, National Institute of Technology Karnataka Surathkal for providing all necessary grants and facilities to carry out the research.