A mathematical model of description and a method for determining the thermostressed state of non-ferromagnetic electroconductive bodies under the influence of external unsteady electromagnetic fields of pulsed type are proposed. Such fields have the character of a regime with amplitude modulation under the action of pulse modulated signal and are widely used in technologies of magnetic pulsed processing electroconductive materials. This model is the development of well-known models for quasi-steady and pulsed electromagnetic fields. As an example, the results of investigation of the ther
A plane axisymmetric dynamic problem of thermomechanics for a hollow bimetallic cylinder under a uniform non-stationary electromagnetic action is formulated. The numerical analysis of the solution of this problem for a hollow bimetallic cylinder exposed to the influence of electromagnetic pulse is carried out. The graphs of changes in the time of ponderomotive force, temperature, components of the tensor of dynamic stresses and intensity of stresses in the compound layers of a cylinder made of stainless steel and copper are presented.
The paper describes a mathematical model of elastic deformation of non-ferromagnetic conductive bodies under the action of pulsed electromagnetic fields (EMF), which takes into account the adiabatic character of processes of heating and deformation of conductive bodies by pulsed electromagnetic fields. Within this model, the dynamic problem of thermo-mechanics has been formulated for a non-ferromagnetic conductive planar layer under the action of pulsed electromagnetic fields.