Mandzyk Y. Thermoelastic contact problems for orthotropic circular cylidrical bodies

One-layered and two-layered systems consisting of hollow orthotropic cyliders. Development of the methodic of the determination of temperature, stresses and displacements distribution peculiarities in two-layer orthotropic cylindrical systems under external pressing and frictional heating; making of the methodic of temperature and stress-strain state determination in a hollow orthotropic circular cylinder placed in a rigid bush with taking into account of a nonlinear thermal resistance between cylinder and a bush. The thermoelastic instability phenomenon in a two-layer cylindrical system is investigated and stability diagrams are constructed. The analitical expressions for critical velocity of a cylinders relative movement are written down. The uniqueness and stability conditions of a solution to the nonlinear contact problem for hollow orthotropic cylinder placed in a rigid bush are established. The conditions under which the neglectable change of input data may cause limited change of thesystem stead y-state are studied analitically. The sphere of using: mashine-building, air- and spacecraft technologies.