The initial boundary-value problem of thermomechanics for a hollow bimetallic sphere under the action of a non-stationary electromagnetic field is formulated.
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.
Розглянуто математичну модель пружного деформування не феромагнітних електропровідних тіл за дії імпульсних електромагнітних полів (ЕМП), яка враховує адіабатичний характер процесів нагрівання і деформування електропровідних тіл імпульсними ЕМП. В рамках даної моделі сформульовано динамічну задачу термомеханіки для неферомагнітного електропровідного шару з плоскопаралельними границями за дії імпульсного ЕМП.