Investigation of stress-deformed state of coated hydrocylinders, exposed to pressure and temperature changes

The aim of the task is to study the stress-strain state cylinders coated bulky devices subjected to the joint action of pressure and temperature changes during operation. The published papers in this problem the combined effect of the external pressure and temperature differential cylinder coated bulky devices are not considered. In this task, the system consists of a cylinder main relatively thick cylinder and a thin inner coating of another material such as a cylinder is subjected to external pressure and asymmetrical temperature field. • Assume that the material of the base layer, the cylinder cover and elastic-plastic, obeys the yield condition, ie, Mises condition. • Also, the temperature is uniformly distributed over the coating thickness, and equal to the temperature inside the main cylinder surface layer. Since the problem relates to the definition of thermal stress field of elastic stresses and displacements of the cylinder defined by the equation of thermoelasticity theory. These equations are written separately to the cylinder and the coating is then co-solution of the equations are carried out in two conditions: - The continuity of the radial displacement of the contact surface; - The balance of power in the main voltage. In conclusion, it can be shown that the effect of the coating is reduced to a certain increase in the area of adaptability. In quantitative terms, this increase depends on the physico-mechanical properties of the material and the nature of the temperature.