Authors : Emad Toma Karash, Tymor Abed Alsttar Sediqer and Nawal Abdul Hakeem Husain
Abstract: The stress and strain condition of a multi-layer hollow cylinder of limited length under the effect of internal pressure and heat is confirmed on the basis of the classical theory of anisotropic body elasticity. The kinematic and static conditions of contact coordinating surfaces of neighboring layers are supposed ideal. By using a multi-layered nearby based on the theory of the layered composites, the solutions of temperature, displacements and mechanical thermal stresses in a functionally stepped circular hollow cylinder are obtainable in this research. The cylinder has finite length and is yielded to to axisymmetric mechanical and thermal loads. The values of the internal pressure and temperature vary sinusoid ally laterally the length of the cylinder. The results showed that, the increase in temperature on the outer surface of the composite pipe has a significant effect on its stress state. The maximum normal stresses in the longitudinal direction in the outer layer of duralumin increased by 59% with an increase in temperature of only 30 K and 57% in bearing layer of fiberglass. When analyzing the changes of normal stresses in the circumferential direction of the cylinder temperature rise 30 K marked decrease in these stresses of 6% in the outer layer and 2% in the carrier layer.
Emad Toma Karash, Tymor Abed Alsttar Sediqer and Nawal Abdul Hakeem Husain, 2018. Mechanical and Temperature Stress Composite Material Pipes with Finite Length. Journal of Engineering and Applied Sciences, 13: 4156-4164.