Damping Properties of Three-Layered Shallow Spherical Shells with a Constrained Viscoelastic Layer

Thermomechanical Buckling of Simply Supported Shallow FGM Spherical Shells with Temperature dependent Material

The thermomechanical buckling of simply supported thin shallow spherical shells made of functionally graded material is presented in this paper. A metal-ceramic functionally graded shell with a power law distribution for volume fraction is considered, where its properties vary gradually through the shell thickness direction from pure metal on the inner surface to pure ceramic on the outer surfa...

Vibro-acoustical analysis and design of a multiple-layer constrained viscoelastic damping structure

iii Abstract The goal of this research is to provide a framework for vibro-acoustical analysis and design of a multiple-layer constrained damping structure. The existing research on damping and viscoelastic damping mechanism is limited to the following four mainstream approaches: modeling techniques of damping treatments/materials; control through the electrical-mechanical effect using the piez...

Asymmetrical Creep Bqckling of Clamped Shallow Spherical Shells

H∞ Control of Active Constrained Layer Damping

Conventional passive constrained layer damping treatments with visco-elastic cores are provided with built-in sensing and actuation capabilities to actively control and enhance their vibration damping characteristics. Two configurations of the resulting hybrid treatment are considered in this paper. In the first configuration the active control and passive operate separately; whereas in the sec...

Effect of Imperfections and Damping on the Type of Nonlinearity of Circular Plates and Shallow Spherical Shells

The effect of geometric imperfections and viscous damping on the type of nonlinearity i.e., the hardening or softening behaviour of circular plates and shallow spherical shells with free edge is here investigated. The Von Kármán large-deflection theory is used to derive the continuous models. Then, nonlinear normal modes NNMs are used for predicting with accuracy the coefficient, the sign of wh...