No abstract

No abstract

INTRODUCTION Composite materials made up of combining two or more materials are being used increasingly in the industry throughout the world. Applications include marine, aircraft and automotive industries as well as domestic appliance, electrical and chemical industries. Composite materials are very popular as they are lightweight, anti-corrosive and low in cost. Many analytical methods of analysis have been used to study the vibration of plates and shells. Analytical difficulties in solving equations in the closed form have been overcome only in some special cases. In other words, the general case has not yet received a satisfactory treatment. The finite element approach has proved to be a powerful and widely applicable method for the vibration analysis of complex problems for which analytical solutions are nearly impossible to find [1]. Vibrating systems can be characterized as linear or non-linear. There exists a wide range of mathematical tools that may be used to describe linear systems' behaviours. On the contrary, there are few techniques for non-linear system analysis and they Letter

This study deals with the thermal stress analysis of a curvilinearly orthotropic rotating annular disc under internal and external pressures. The temperature distribution is chosen to vary parabolically from the inner surface to the outer surface along the radial section. With an increasing temperature, the tangential stress component decreases at the inner surface whereas it increases at the outer surface, and the radial stress component goes down gradually. The magnitude of the tangential stress component is higher than that of the radial stress component. The radial displacement is calculated analytically and has higher values at the inner surface than that of the outer surface, for all the temperature distributions. The stresses and the radial displacement obtained are also compared with the stresses and displacement in a rectilinearly hollow rotating disc of [Çallioğlu, H., Stress Analysis of an Orthotropic Rotating Disc under Thermal Loading, J. Reinforced Plastics and Composites, (in press)].

No abstract